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KPM's cable testing kits equpments are as follow:- - KPM TAN DELTA 40 - KPM AC HIPOT - KPM DC HIPOT - KPM VLF Hipot Tester - KPM VLF Series KPM TD 40 ONLINE-TE- UND ERDUNGSÜBERWACHUNG KPM TAN DELTA 40 KPM TD 40 KPM TD 40 capacitance and tan delta tester is designed for condition assessment of high capacitance & high voltage electrical insulation in high voltage apparatus. It is a measurement instrument that is used with an AC power source and a standard capacitor to form a complete measurement setup. KPM TD 40 is a two-piece design. the control module and the test module communicate wirelessly during the test. KPM DC HIPOT KPM DC HIPOT KPM Portable DC Hipot Test Set consists of a control unit & a double rectifier unit. The KPM- DC series of HIPOTs is light weight, portable & easy to use. These units are user friendly & its output is stable at even high voltages DC vs AC High-potential Testing Direct current high-potential testing provides several advantages over alternating current. KPM VLF Series KPM VLF Series KPM offers the most portable and easy to use VLF hipots available in market. A VLF hipotis just an AC output tester but with an output frequency of 0.1 Hz or lower rather than 0.1 Hz. Although the frequency is very low, it is still an alternating current with polarity reverses after every half cycle. At 0.1 Hz output, rather than 50Hz, it takes 500 times less current and power to apply an AC voltage to a capacitive load, like a long cable. KPM AC HIPOT KPM AC HIPTO KPM Portable AC/DC Hipot Test Set consists of a control unit & a double rectifier unit. The KPM-AC/DC series of HIPOTs is light weight , portable & easy to use. These units are user friendly& its output is stable at even high voltages it is the basic test equipment used by the power station, transmission and distribution companies for testing the insulation strength of all kind of electrical products, electrical equipment and insulated materials. KPM VLF Hipot Tester KPM VLF Hipot Tester KPM offers the most portable and easy to use VLF hipots available in market. A VLF hipotis just an AC output tester but with an output frequency of 0.1 Hz or lower rather than 0.1 Hz. Although the frequency is very low, it is still an alternating current with polarity reverses after every half cycle. At 0.1 Hz output, rather than 50Hz, it takes 500 times less current and power to apply an AC voltage to a capacitive load, like a long cable. Häufig gestellte Fragen (FAQ) FAQ about Cable testing : 01 1. What is VLF testing, and why is it used for cable diagnostics? VLF (Very Low Frequency) testing applies a low-frequency AC voltage—typically 0.01 Hz to 0.1 Hz—to power cables to assess their insulation condition. It’s used because VLF testing can apply a high voltage stress similar to normal operating conditions but with less heating and damage risk than standard power frequency tests. This makes it ideal for diagnosing medium- and high-voltage cables, especially in field conditions, to detect weaknesses like insulation degradation, voids, or defects before failure occurs. 02 2. How does VLF testing differ from conventional AC hipot testing? VLF testing uses a very low frequency (typically 0.01 to 0.1 Hz) AC voltage, whereas conventional AC hipot testing applies standard power frequency (50/60 Hz) voltage. The low frequency in VLF reduces the capacitive charging current in long cables, allowing high test voltages without overheating the cable insulation. This makes VLF safer and more practical for field testing of long medium- and high-voltage cables. In contrast, conventional AC hipot tests can cause excessive heating and damage when used on such cables. 03 3. What types of cable defects can VLF testing detect? VLF testing is effective at identifying a wide range of insulation defects and weaknesses within medium- and high-voltage power cables. It can detect partial discharge (PD) activity, which is a common early indicator of insulation deterioration such as microscopic voids or cracks within the cable’s insulation material. These PD sites generate localized electrical discharges that degrade the insulation over time, potentially leading to catastrophic failure if not addressed. Additionally, VLF testing can reveal water ingress problems, where moisture penetrates the insulation and lowers its dielectric strength, as well as contamination or aging effects such as thermal, mechanical, or chemical degradation of the insulation material. It can also uncover manufacturing defects like thin spots, improper curing, or insulation gaps. While VLF testing is excellent for assessing the overall integrity of the cable insulation and detecting areas of weakness, it may not precisely locate the defects. For detailed localization, it is often combined with other techniques such as partial discharge (PD) measurements or time-domain reflectometry (TDR). 04 4. What is Tan Delta (VLD) testing, and how does it assess cable insulation quality? Tan Delta (also called Very Low Dissipation factor or VLD) testing measures the dielectric losses in cable insulation by applying an AC voltage and analyzing the phase difference between the current and voltage. The "tan delta" represents the ratio of resistive (lossy) current to capacitive (ideal) current. A low tan delta value indicates good insulation with minimal energy loss, while higher values suggest deterioration due to moisture, contamination, or aging. By measuring these losses, Tan Delta testing assesses the overall insulation condition and detects early-stage degradation before catastrophic failure. It is highly sensitive to insulation quality changes and is commonly used for condition assessment and preventive maintenance of medium- and high-voltage cables. 05 5. How do Tan Delta results indicate the health or degradation of a cable? Tan Delta results reflect the insulation’s dielectric losses, which increase as the cable ages or deteriorates. A low tan delta value means the insulation is healthy, with minimal leakage current and good dielectric integrity. Conversely, a rising tan delta value indicates increasing insulation defects such as moisture ingress, contamination, cracks, or thermal aging. Trends in tan delta over time are especially important: a gradual increase suggests progressive degradation, allowing maintenance teams to plan repairs before failure occurs. Sudden spikes may point to acute damage or contamination. Thus, monitoring tan delta values helps assess the insulation’s condition, predict remaining service life, and prioritize maintenance actions. 06 6. What is VLF Partial Discharge (PD) testing, and how does it help's identify insulation defects? VLF Partial Discharge (PD) testing uses very low frequency voltage to stress the cable insulation while detecting and measuring partial discharges—tiny electrical sparks that occur within insulation voids or defects. These discharges are often early signs of insulation failure, caused by imperfections like cracks, voids, or contamination. By capturing PD activity, VLF PD testing helps pinpoint insulation defects before they lead to catastrophic cable failure. It provides valuable insight into the type, location, and severity of defects, enabling targeted maintenance and reducing unplanned outages. This makes it a crucial tool for proactive cable condition assessment. 07 7. Can VLF PD testing detect early-stage insulation failures? Yes, VLF Partial Discharge (PD) testing is specifically designed to detect early-stage insulation failures. Partial discharges are small electrical sparks that occur in microscopic voids, cracks, or impurities within the cable insulation—often long before a complete breakdown happens. By applying very low frequency voltage, VLF PD testing stresses the insulation gently but effectively, allowing detection of these early PD activities. Detecting partial discharges early helps identify weak spots or developing defects in the insulation, enabling maintenance teams to address issues proactively, extend cable life, and avoid costly unplanned failures. 08 8. What are the typical test voltages and frequencies used in VLF cable testing for 11 kV and 33 kV cables? For 11 kV cables, the VLF test voltage typically ranges from 15 kV to 33 kV, depending on the test type—diagnostic tests usually use about 1.5 times the rated voltage (around 16.5 kV), while withstand tests may apply up to 2.5 to 3 times the rated voltage (up to ~33 kV). For 33 kV cables, the test voltage typically ranges from 45 kV to 75 kV, with diagnostic tests at around 1.5 times the rated voltage (approximately 49.5 kV), and withstand tests potentially up to 2.5 times rated voltage (about 82.5 kV), though the upper limit depends on cable specifications and standards. In both cases, the frequency used is very low—typically 0.1 Hz—to reduce capacitive currents and minimize heating during testing, making it safe and effective for long cable lengths. 09 9. How do environmental factors affect VLF, Tan Delta, and PD test results? Environmental conditions like temperature, humidity, and soil moisture can significantly impact VLF, Tan Delta, and Partial Discharge (PD) test results. Temperature: Higher temperatures generally reduce insulation resistance and can increase Tan Delta values and PD activity due to increased molecular activity in the insulation. Low temperatures can raise resistance but might mask some defects. Humidity and Moisture: Moisture ingress lowers insulation resistance and increases dielectric losses, causing higher Tan Delta readings and more PD activity. Wet conditions can lead to more apparent insulation degradation during testing. Soil Conditions: For underground cables, soil resistivity and moisture affect grounding and test current paths, influencing VLF and PD measurements. Dry or rocky soils may lead to higher resistance readings. Surface Contamination: Dirt, oil, or salts on cable surfaces can cause surface discharges, impacting PD and Tan Delta results. Because of these factors, it’s important to consider and document environmental conditions during testing and, where possible, perform tests under similar conditions for consistent trending and accurate diagnostics. 10 10. What are the safety precautions and best practices during VLF and PD cable testing? • Ensure Proper Training: Only qualified personnel familiar with high-voltage testing and equipment should conduct tests. • Use Appropriate PPE: Wear insulated gloves, safety glasses, and flame-resistant clothing. • Clear the Test Area: Establish a safe perimeter with warning signs and barriers to prevent unauthorized access during testing. • Verify Equipment Condition: Check all test instruments, leads, and connections for damage before use. • De-energize and Ground Cables: Ensure the cable is disconnected from the power system and properly grounded before connecting test equipment. • Follow Manufacturer Guidelines: Use the recommended test voltages, durations, and procedures specific to the cable type and equipment. • Monitor Test Parameters: Continuously observe voltage, current, and PD activity during the test to detect abnormalities early. • Avoid Testing in Hazardous Environments: Do not perform tests during storms, wet conditions, or explosive atmospheres. • Record Test Data Accurately: Document all parameters, environmental conditions, and observations for traceability and analysis. • Emergency Preparedness: Have clear procedures for immediate shutdown and emergency response in case of equipment failure or personnel hazard. • Following these precautions ensures safety and reliable test results while protecting both personnel and equipment.

Energy meter testing equipment 1) Energy meter testing reference ( 1 ph & 3 ph ) 2) Energy meter calibrator ( 3 ph ) 3) Energy meter test bench ( 1 ph & 3 ph ) Prüfung des Energiezählers 3-Phasen-Energiezähler-Referenz - MT 3000D MT3000D MT 3000D ist ein hochmoderner tragbarer 3-Phasen-Energiezähler mit Referenz zum Testen und Kalibrieren von Energiezählern. MT3000D ist ein einfach zu bedienendes und leichtes Gerät. MT 3000D ist in zwei Genauigkeitsoptionen erhältlich (0,05 % und 0,1 %) MT3000D ist ein All-in-One-Gerät mit den folgenden Funktionen Automatischer falscher Verbindungstest Verhältnistest Harmonischer Test Messgenauigkeitstest (Klasse 0,05 / 1) Bericht drucken MT 3000B Der tragbare Vor-Ort-Kalibrator für dreiphasige kWh-Zähler wird zum Kalibrieren von dreiphasigen, einphasigen, aktiven oder reaktiven Energiezählern während der Arbeit verwendet und kann auch als Spannungs-, Strom- und Leistungsmesser zur Messung von Wechselstromparametern einer dreiphasigen Stromleitung verwendet werden , es kann auch den Wellenverzerrungsfaktor und die 2- bis 63-fache harmonische -Welle messen. Es hat folgende Eigenschaften: •Verwenden Sie einen 32-Bit-ARM-Prozessor, einen Mehrkanal-16-Bit-Präzisions-A/D-Wandler, hochauflösendes TFT-LCD. •Innere ausgestattet mit 0,01 % Weitbereichsstromwandler und kann mit verschiedenen Stromzangentypen, großem Messbereich und hoher Genauigkeit ausgestattet werden. •Stromkreisdesign mit niedrigem Verbrauch, hochenergetische Li-Batterieversorgung, intelligente Power-Management-Software, mit der das Instrument bis zu 10 Stunden ununterbrochen arbeiten kann Test des 1-Phasen-Energiezählers Referenz Katalog EMR 1 ist ein hochmoderner tragbarer 1-Phasen-Energiezähler mit Referenz zum Testen und Kalibrieren von Energiezählern . EMR 1 ist ein einfach zu bedienendes und leichtes Gerät. EMR 1 kommt mit Genauigkeit von 0,3 % Spezifikationen 1. Testen Sie Zählerfehler, ohne die Netzversorgung zu trennen. 2. Optionale Dummy-Ladebox 3. Zertifikat: ISO 9001 Funktionen Spezielles Kunststoffgehäuse, leicht und einfach für tragbare LCD-Displays Spannung, Strom, Leistung messen. Phasenleistungsfaktor ohne Trennen des Stromkreises Testen Sie den positiven/negativen Fehler des Einphasenzählers, ohne den Stromkreis zu trennen Breiter Stromzangenbereich: 0,5–100 A Breiter Arbeitsspannungsbereich: AC180 - 250V Stromversorgung direkt über Spannungsprüfkabel Hoch- und niederfrequenter Energieimpulsausgang. Einfach zu senden und zu testen Probenahme durch Abtastkopf, direkter Eingangsimpuls des elektronischen Zählers oder manuelle Schalterkalibrierung Kann mit der externen Stromlastbox verbunden werden und die simulierte Last unterstützen Test des 1-Phasen-Energiezählers Referenz Katalog EMR 1 ist ein hochmoderner tragbarer 1-Phasen-Energiezähler mit Referenz zum Testen und Kalibrieren von Energiezählern . EMR 1 ist ein einfach zu bedienendes und leichtes Gerät. EMR 1 kommt mit Genauigkeit von 0,3 % Spezifikationen 1. Testen Sie Zählerfehler, ohne die Netzversorgung zu trennen. 2. Optionale Dummy-Ladebox 3. Zertifikat: ISO 9001 Funktionen Spezielles Kunststoffgehäuse, leicht und einfach für tragbare LCD-Displays Spannung, Strom, Leistung messen. Phasenleistungsfaktor ohne Trennen des Stromkreises Testen Sie den positiven/negativen Fehler des Einphasenzählers, ohne den Stromkreis zu trennen Breiter Stromzangenbereich: 0,5–100 A Breiter Arbeitsspannungsbereich: AC180 - 250V Stromversorgung direkt über Spannungsprüfkabel Hoch- und niederfrequenter Energieimpulsausgang. Einfach zu senden und zu testen Probenahme durch Abtastkopf, direkter Eingangsimpuls des elektronischen Zählers oder manuelle Schalterkalibrierung Kann mit der externen Stromlastbox verbunden werden und die simulierte Last unterstützen Test des 1-Phasen-Energiezählers Referenz Katalog EMR 1 ist ein hochmoderner tragbarer 1-Phasen-Energiezähler mit Referenz zum Testen und Kalibrieren von Energiezählern . EMR 1 ist ein einfach zu bedienendes und leichtes Gerät. EMR 1 kommt mit Genauigkeit von 0,3 % Spezifikationen 1. Testen Sie Zählerfehler, ohne die Netzversorgung zu trennen. 2. Optionale Dummy-Ladebox 3. Zertifikat: ISO 9001 Funktionen Spezielles Kunststoffgehäuse, leicht und einfach für tragbare LCD-Displays Spannung, Strom, Leistung messen. Phasenleistungsfaktor ohne Trennen des Stromkreises Testen Sie den positiven/negativen Fehler des Einphasenzählers, ohne den Stromkreis zu trennen Breiter Stromzangenbereich: 0,5–100 A Breiter Arbeitsspannungsbereich: AC180 - 250V Stromversorgung direkt über Spannungsprüfkabel Hoch- und niederfrequenter Energieimpulsausgang. Einfach zu senden und zu testen Probenahme durch Abtastkopf, direkter Eingangsimpuls des elektronischen Zählers oder manuelle Schalterkalibrierung Kann mit der externen Stromlastbox verbunden werden und die simulierte Last unterstützen Häufig gestellte Fragen (FAQ) FAQ about Energy meter testing : 01 What is the purpose of reference testing in energy meter calibration? The purpose of reference testing in energy meter calibration is to verify and ensure the accuracy of the energy meter by comparing its measurements against a highly precise and traceable standard—called the reference meter or standard. This process identifies any measurement errors or deviations in the energy meter under test, allowing for correction or adjustment to meet specified accuracy classes. Reference testing helps maintain measurement reliability, billing fairness, and compliance with industry standards. 02 How is the accuracy class of an energy meter determined during calibration? The accuracy class of an energy meter is determined by evaluating its measurement error under a range of standardized test conditions during calibration. This involves comparing the meter’s energy readings against those of a highly accurate reference standard meter over a set period and at various load levels and power factors. The calibration process typically tests the meter at multiple points such as: Light load (e.g., 10% of rated current) Medium load (e.g., 50% of rated current) Full load (100% of rated current) Additionally, measurements are taken at different power factors, including unity (1.0), lagging (inductive), and leading (capacitive) conditions, to simulate real operating scenarios. At each test point, the percentage error is calculated by comparing the meter’s recorded energy to that of the reference meter. The accuracy class is assigned based on whether these errors stay within the maximum allowable limits defined by standards such as IEC 62053 or ANSI C12.20. For example, a Class 1.0 meter must not exceed ±1% error under these conditions. Consistent performance across all test points confirms the meter’s accuracy class, ensuring it meets the required precision for billing or monitoring applications. 03 Do you know the common standards and regulations followed for energy meter calibration? What are the common standards and regulations followed for energy meter calibration? Energy meter calibration is governed by international and regional standards to ensure accuracy, reliability, and uniformity. The most widely followed standards include: IEC 62053 series: International standards specifying performance and accuracy requirements for different classes of electricity meters (e.g., IEC 62053-21 for static meters, IEC 62053-22 for active energy meters, and IEC 62053-23 for reactive energy meters). IEC 60521 and IEC 60522: Standards covering calibration methods and testing procedures for electric meters. ANSI C12 series: North American standards, such as ANSI C12.20, that define accuracy classes and testing protocols for electric meters. OIML R46: International recommendation by the International Organization of Legal Metrology outlining accuracy requirements and test procedures for electricity meters used in billing. National regulations: Many countries have their own legal metrology regulations and certification requirements to ensure meters used for billing comply with local laws. 04 Do you know which equipment is used as a reference standard during energy meter calibration? The reference standard in energy meter calibration is a highly accurate and traceable device known as a calibration standard meter or reference meter. This equipment has a much higher precision than the meter under test, typically with an accuracy class of 0.02% or better. Common types include: Standard reference meters: Precision static energy meters designed specifically for calibration, with traceability to national or international measurement standards. Calibrated instrument transformers: High-accuracy current and voltage transformers to supply accurate test signals. Precision power sources: Devices that can generate stable and controllable voltage and current at various loads and power factors to simulate real operating conditions. Calibration benches or test rigs: Integrated setups that combine the above equipment to perform automated, controlled calibration tests. Using these reference standards ensures that the energy meter calibration is accurate, repeatable, and compliant with metrology requirements. 05 How do environmental conditions affect energy meter calibration results? Environmental factors like temperature, humidity, and atmospheric pressure can influence the accuracy of energy meter calibration. Temperature: Changes in temperature can affect the electrical characteristics of meter components, causing measurement drift or errors. Most calibration standards specify temperature ranges within which tests should be performed to ensure consistency. Humidity: High humidity can cause condensation or moisture ingress, impacting insulation resistance and electronic circuits, leading to inaccurate readings during calibration. Atmospheric pressure: Variations in pressure can subtly affect electrical properties, especially in sensitive equipment, although its impact is generally less significant than temperature or humidity. To minimize these effects, calibrations are ideally conducted in controlled laboratory environments with stable temperature and humidity, or environmental conditions are recorded and accounted for in the calibration report. 06 What is the difference between static and dynamic energy meter calibration? Static calibration tests the energy meter under steady-state conditions by applying fixed voltage and current values at set loads and power factors. It measures the meter’s accuracy when the electrical parameters remain constant, helping to verify basic performance and error under controlled, stable conditions. Dynamic calibration, on the other hand, evaluates the meter’s performance under varying, real-world operating conditions where voltage, current, and load fluctuate over time. It simulates actual usage patterns to assess how accurately the meter records energy during transient events, load changes, and power quality variations. While static calibration is simpler and faster, dynamic calibration provides a more comprehensive assessment of meter accuracy in practical scenarios, especially important for modern smart meters and complex electrical systems. 07 How often should energy meters be recalibrated to ensure accuracy? Energy meters should typically be recalibrated every 3 to 5 years, depending on regulatory requirements, manufacturer recommendations, and the operating environment. Frequent recalibration helps detect any drift in accuracy caused by aging, environmental factors, or mechanical wear. In critical applications or harsh conditions, more frequent recalibration may be necessary. Utilities often follow national standards or legal metrology guidelines that specify maximum intervals to maintain measurement reliability and billing fairness. 08 What is the process for checking the linearity of an energy meter? Checking the linearity of an energy meter involves verifying that the meter’s measurement error remains consistent across a wide range of loads. The process includes: Apply multiple test currents: The meter is tested at different load levels, typically ranging from low (e.g., 10% of rated current) to full load (100%) and sometimes even above. Maintain constant voltage and power factor: During each test point, voltage and power factor are kept steady to isolate the current’s effect. Record meter readings: The energy measured by the meter under test is compared against a reference standard meter at each load level. Calculate percentage error: For each load, the error percentage is calculated based on the difference between the test meter and reference meter readings. Analyze results: A linear meter will show minimal variation in error across all loads. Significant deviations indicate non-linearity, which can affect billing accuracy. This test ensures the meter accurately measures energy consumption regardless of load size, essential for fair billing and reliable performance. 09 How are errors in energy meters identified and corrected during calibration? During calibration, errors in energy meters are identified by comparing the meter’s recorded energy values to those of a highly accurate reference standard under controlled test conditions. The percentage difference between the meter reading and the reference reading reveals the magnitude and direction of the error. If errors exceed acceptable limits defined by standards, corrective actions may include: • Adjustment: For mechanical meters, physical adjustments (like repositioning the dial or adjusting the braking magnet) can reduce errors. • Reprogramming or firmware updates: For electronic meters, software recalibration or parameter tuning may correct measurement deviations. • Component replacement: Faulty parts, such as sensors or electronic modules, may be replaced to restore accuracy. • Rejecting the meter: If the errors cannot be corrected within tolerance, the meter may be deemed unfit for use. After correction, the meter is re-tested to confirm that errors now fall within the required accuracy class, ensuring reliable measurement and billing.

In KPM Engineering Solutions we have all type of state of art earth resistance testers such as Spike Method , Clamp On Method , Grid Earth Resistance Monitor Etc. |Earth Testing |https://www.kpmtek.com/earth-testing-app ERD-/BODENPRÜFUNG Earth Tester - Spike-Methode Mehr wissen Earth Tester (Spike Method) KPM -ET30K Earth Resistance & Soil Resistivity Tester is specially designed and manufactured for measuring earth resistance, soil resistivity, earth voltage &_cc781905-5cde-3194-bb3b- 136bad5cf58d_Wechselspannung. ET30K adopts the latest technology for precise 4-pole, 3 -pole and simple 2-pole measurement for earth Widerstand. importing FFT and AFC technology,_cc781905-5cde- 3194-bb3b-136bad5cf58d_ with a unique function of anti-interference capability and the ability to adapt to the_cc781905-5cde-3194- bb3b-136bad5cf58d_ environment, consistency of repeat testing,_cc781905-5cde-3194-bb3b -136bad5cf58d_ um hohe Präzision, hohe Stabilität und Zuverlässigkeit für längere Messungen zu gewährleisten Erdungsprüfer – Klemmmethode Mehr wissen Clamp Earth Tester (KPM-CET1200) ist weit verbreitet in der Erdungswiderstandsmessung, Loop Widerstandsmessung in Bereichen wie Elektro Widerstandsmessung in Bereichen wie Elektro Meteorologie, Telekommunikation_Energie , Ölfeld, Architektur und industrielle elektrische Ausrüstung usw. Beim Messen des Erdungssystems mit Schleife gibt es keine Notwendigkeit, die Erdung zu trennen Draht ohne Hilfs Elektrode, was sicherer und schneller bedeutet. Schlüsselspezifikationen von Clamp Earth Tester (KPM-CET1200) Misst den Erdwiderstand/Schleifenwiderstand Große Backengröße (65 mm x 32 mm) Großer Widerstandsmessbereich (0,01 Ω bis 1200 Ω) Großer Strommessbereich (0,01 A bis 20 A) Ideal zum Testen von miteinander verbundenen Erdgrubenschaltungen like Grid Earthing, Mesh Earthing, Transmission Tower Earthing Earth Tester - Spike-Methode Mehr wissen Earth Tester (Spike Method) KPM -ET30K Earth Resistance & Soil Resistivity Tester is specially designed and manufactured for measuring earth resistance, soil resistivity, earth voltage &_cc781905-5cde-3194-bb3b- 136bad5cf58d_Wechselspannung. ET30K adopts the latest technology for precise 4-pole, 3 -pole and simple 2-pole measurement for earth Widerstand. importing FFT and AFC technology,_cc781905-5cde- 3194-bb3b-136bad5cf58d_ with a unique function of anti-interference capability and the ability to adapt to the_cc781905-5cde-3194- bb3b-136bad5cf58d_ environment, consistency of repeat testing,_cc781905-5cde-3194-bb3b -136bad5cf58d_ um hohe Präzision, hohe Stabilität und Zuverlässigkeit für längere Messungen zu gewährleisten Online Earth Tester (GERM) Mehr wissen Ein hochmodernes Gerät zur Online-Überwachung des Zustands Ihres kritischen Erdungssystems Grid Earth Resistance Monitor (Germ) ist ein state of Art Gerät, das Online den Erdwiderstandswert der Erdgruben in Echtzeit überwacht und einen Alarm auslöst, wenn es einen Fehler erkennt . Alle Informationen von der Website werden über fortgeschrittene Kommunikationsmethoden sicher an den Server gesendet. Häufig gestellte Fragen (FAQ) FAQ about Earth testing : 01 Difference between Clamp and Spike Method? Earth Resistance Testing: Clamp vs. Spike Method : The Clamp Method and the Spike (Fall-of-Potential) Method are two commonly used techniques for measuring earth resistance, each with distinct use cases. The Spike Method (also known as the three-point or fall-of-potential method) is considered the most accurate and is typically used during installation or scheduled maintenance when it’s feasible to disconnect the grounding system. It requires driving two auxiliary spikes into the ground at set distances from the earth electrode and measuring the voltage drop created by a test current. This method provides a true earth resistance value but is time-consuming, invasive, and requires open ground access. In contrast, the Clamp Method (or Stakeless method) is a quick, non-intrusive test ideal for live systems where disconnecting the earth rod is not possible. Using a special clamp meter, the method induces a test signal and measures current flow through parallel earth paths. It’s convenient and fast but is only applicable when multiple grounding paths exist (e.g., in mesh or grid systems). The Clamp Method does not provide accurate results for isolated earth rods or when there is only a single grounding point. In summary, the Spike Method is best for accurate baseline testing during commissioning, while the Clamp Method is ideal for routine checks on operational systems without disrupting service. 02 How to Ensure Compliance With Earth Testing in Renewable Sites? Ensuring Compliance with Earth Testing in Renewable Sites : To ensure safety and meet regulatory standards in solar, wind, or hybrid renewable energy systems, proper earth resistance testing is essential. Key Steps: Follow Standards: Comply with IEC 60364, IEEE 80, BS 7430, or local codes. Test Soil Early: Conduct soil resistivity surveys during design to select the right grounding method. Use Proper Methods: Apply the Fall-of-Potential method for commissioning and Clamp Method for periodic checks. Keep Records: Log all test data with method, instrument, and environmental details. Test Regularly: Schedule annual or biannual resistance tests to catch degradation early. Use Remote Monitoring (if available): SCADA or sensors can track resistance levels continuously. Train Personnel: Ensure field staff know correct testing procedures and safety protocols. Third-Party Verification: For audits or large projects, use certified inspectors for compliance reporting. 03 What will be seasonal Impact on Ground Resistance Measurements? Seasonal Impact on Ground Resistance Measurements Ground resistance values can vary significantly with seasonal changes due to environmental factors affecting soil conditions: Soil Moisture: During wet seasons (rainy or winter), soil moisture increases, lowering ground resistance by improving conductivity. Conversely, dry seasons cause soil to dry out, increasing resistance. Soil Temperature: Colder temperatures can increase soil resistivity as water in soil may freeze, reducing conductivity. Warmer temperatures generally improve conductivity. Soil Composition Changes: Seasonal changes in organic matter decomposition and salt concentration may also affect soil resistivity. Vegetation and Ground Cover: Plant growth during certain seasons can affect soil moisture retention and contact with grounding electrodes. Implications Testing during different seasons may yield varying results; hence, baseline measurements should be taken in both dry and wet conditions to understand worst-case scenarios. For accurate monitoring and compliance, schedule tests consistently or adjust acceptable resistance thresholds based on seasonal variation.

KPM ENGINEERING SOLUTIONS is an electrical test equipment provider with strong support. Our solutions are Relay Test Kit, CT/PT Analyzer, Oil BDV, Transformer Testing, Circuit Breaker Testing, LA Testing, Ground Testing, Partial Discharge Testing, Thermal Imager Camera, PIK, SIK, AC/DC HIPOT. KONTAKT KPM Gurgaon Office : Telefonnummer: +91 124 4001088, Email : sales@kpmtek.com _cc781905-5cde-3194-bb3b- 136bad5cf58d_ ( Vertriebs- und Servicezentrum ) Bangalore Office : Phone Number : +91 8123950553, Email : blr@kpmtek.com _cc781905-5cde-3194-bb3b -136bad5cf58d_ _cc781905-5cde -3194-bb3b-136bad5cf58d_ ( Vertriebs- und Servicezentrum ) EU Contact _cc781905-5cde-3194 -bb3b-136bad5cf58d_ : Phone Number :+48 539438443 , Email : sales@kpmtek.com _cc781905-5cde-3194 -bb3b-136bad5cf58d_ _cc781905 -5cde-3194-bb3b-136bad5cf58d_ ( Vertrieb und technischer Support )

KPM's Partial discharge range of equipment are as below -: 1) Hand Held PD monitoring units used by electrical maintenance & repair professionals. 2) HV laboratory PD Monitoring Systems used by manufacturers 3) Online PD monitoring facilities used for PD monitoring of critical PD Resources ONLINE-TE- UND ERDUNGSÜBERWACHUNG KPM PENTA PD (HAND HELD) View more Partial Discharge Detector Penta-PD is an ideal partner for condition-based maintenance programs. Partial Discharge Detector Penta-PD incorporates all 5 types of online PD sensor technology. Information from multiple sensors gives Partial Discharge Detector Penta-PD the versatility to detect various type PD in variety of substation apparatus. KPM PDM-01,Partial Discharge Monitor View more The KPM PDM-01 partial discharge detector stands out as a versatile digital tool within KPM's product range. Featuring a 10.1-inch touch screen, it replaces the traditional oscilloscope tube and physical knob operation, enhancing user convenience. The instrument employs a full touch screen interface, contributing to extended product longevity and incorporates useful features such as automatic correction, high voltage divider ratio settings, and serial communication for uploading test data. KPM PDTI Cable Termination Monitor View more The KPM PDTI system is deployed on primary switching equipment such as ring network switch cabinets, cable termination boxes, and transformer output cables etc. within the power distribution network. Its primary function is to conduct online monitoring of partial discharge, indicating potential short circuits and ground faults in corresponding cable sections, along with real-time temperature monitoring. KPM Corona Pointer View more KPM Corona Pointer is an ideal equipment for condition-based maintenance programs. Online partial discharge testing is a method of inspecting the insulation of electric power systems while equipment remains energized and in service. Corona Pointer is based on online Ultrasonic PD sensor technology. KPM Duo PD - Handheld PD monitoring system View more KPM Duo PD is a handheld partial discharge tester which uses the ultrasonic signal generated by partial discharge to determine the existence and location of partial discharge and combines the real-time displayed images and data to quickly diagnose partial discharge conditions. KPM PDA-01, Partial Discharge Monitor View more The KPM PDA-01 features a split, modular design, with the local discharge signal conditioning module, digital acquisition module, and test voltage acquisition module integrated into the instrument. The powerful local discharge test and analysis system software is installed on the host computer, which connects to the instrument via USB and RS232 serial ports. KPM PD Pulse-8, Online Partial Discharge Monitor View more KPM PD Pulse-8 partial discharge online monitoring device includes a modularly designed partial discharge sensor and a partial discharge data processing terminal. The partial discharge sensor can effectively monitor ultrasonic and transient earth voltage signals. Its sensors are a two-in-one integrated assembly that can be installed on the HV equipment. Häufig gestellte Fragen (FAQ) FAQ about Partial discharge : 01 What are the Top 5 PD Testing Techniques – A Quick Comparison? 1) Ultrasonic PD Detection - Detects sound waves from PD events - Portable, good for on-site inspections - Limited sensitivity in noisy environments 2) High-Frequency Current Transformer (HFCT) - Measures high-frequency currents on cables - Effective for early PD detection - Requires access to grounding points 3) Transient Earth Voltage (TEV) - Detects electromagnetic signals from PD inside metal enclosures - Non-intrusive and widely used in switchgear - Limited for external PD sources 4) Oscilloscopic PD Measurement - Directly captures PD pulses using specialized sensors - Very detailed and accurate - Requires expert analysis and controlled environment 5) Acoustic Emission (AE) Sensors - Captures elastic waves from PD activity - Useful for localizing PD sources - Can be affected by external noise - KPM offers advanced PD measurement systems combining multiple techniques for comprehensive, reliable diagnostics. 02 What do you understanding AE, HFCT, TEV, and UHF – Which PD Kit Do You Need? Choosing the right Partial Discharge (PD) testing kit depends on your equipment type, accessibility, and testing goals. Here’s a quick comparison: 1. AE – Acoustic Emission How it works: Detects sound waves from PD using piezoelectric sensors. Best for: Transformers, bushings, and GIS (localizing PD points). Pros: Non-invasive, good for pinpointing PD. Limitations: Sensitive to external noise. 2. HFCT – High-Frequency Current Transformer How it works: Clamped around the grounding conductor to detect PD pulses. Best for: Cables, terminations, rotating machines. Pros: Early detection, non-intrusive. Limitations: Needs grounding access; less effective in noisy ground systems. 3. TEV – Transient Earth Voltage How it works: Senses electromagnetic emissions on metal-clad switchgear. Best for: MV switchgear (metal-enclosed). Pros: Easy to use, fast screening. Limitations: Doesn’t work well on non-metallic enclosures. 4. UHF – Ultra High Frequency How it works: Captures high-frequency EM waves from PD (300 MHz+). Best for: GIS, gas-insulated transformers, sealed systems. Pros: Very sensitive and noise-immune. Limitations: Needs access to UHF sensors or couplers. Which Kit Do You Need? For switchgear: TEV + AE For cables and rotating machines: HFCT For GIS or sealed systems: UHF + AE For transformers and bushings: AE + HFCT KPM offers hybrid PD testing kits combining AE, TEV, HFCT, and UHF sensors for complete diagnostics across all asset types—helping you localize, classify, and trend PD activity efficiently. 03 What is principle of detecting PD in Switchgear Using TEV Method ? The Transient Earth Voltage (TEV) method detects partial discharge activity in metal-clad switchgear by capturing fast, high-frequency voltage transients that appear on the internal metal surfaces of the switchgear enclosure. How It Works: When partial discharge occurs inside the insulation of live parts (e.g., busbars, bushings), it emits electromagnetic pulses. These pulses induce high-frequency voltage transients on the inner surface of the switchgear's metal enclosure. These transients propagate through the metal, eventually reaching the outer surface. A TEV sensor, placed magnetically or capacitively on the metal surface, detects these transient voltages—typically in the range of MHz frequencies. Why It Works Well for Switchgear: Switchgear panels are metal-enclosed, which acts as a waveguide for the transient signals. TEV signals indicate internal insulation defects like surface tracking, void discharges, or corona inside the equipment. TEV detection is non-invasive, requires no shutdown, and is widely used for condition-based maintenance. What TEV Tells You: Presence of internal PD Severity of the discharge (by amplitude and repetition rate) Useful for early detection before insulation failure KPM’s PD testing kits integrate TEV sensors with digital displays and trending software, making it easy to perform on-site diagnostics of medium-voltage switchgear for early PD detection and risk assessment. 04 What are the Diagnosing Cable Defects With HFCT-Based PD Testing ? High-Frequency Current Transformer (HFCT) sensors are widely used for detecting and diagnosing partial discharge (PD) activity in power cables. They are clamped around the earth (ground) conductor to sense high-frequency current pulses generated by insulation defects. How HFCT PD Testing Works: PD Activity Inside Cable Insulation: Voids, cracks, or deteriorated insulation cause small electrical discharges. Pulse Propagation: These discharges generate high-frequency current pulses (MHz range) that flow along the grounding system. HFCT Sensor Detection: The HFCT sensor detects these pulses non-invasively by clamping it around the cable’s earth conductor without disconnecting the system. Signal Analysis: The captured pulses are analyzed for: Pulse shape and repetition rate Time-of-flight (for PD location) Amplitude and phase-resolved patterns (PRPD) What It Diagnoses: Defects in cable joints, terminations, insulation Water trees or aging in XLPE cables Internal corona or tracking activity Advantages of HFCT PD Testing: Online or offline testing possible Non-intrusive and safe Early detection prevents costly cable failures Can be used with multiple sensors for PD location (triangulation) KPM’s HFCT-based PD testing solutions are designed for rapid setup, high sensitivity, and advanced diagnostics—enabling utilities and industries to monitor cable health with confidence. 05 What is UHF PD Testing in GIS – High Sensitivity Explained? Ultra High Frequency (UHF) PD testing in Gas-Insulated Switchgear (GIS) is a highly sensitive method that detects partial discharge by capturing electromagnetic signals in the 300 MHz to 1.5 GHz range. GIS enclosures, being metallic and sealed, confine PD signals and create a low-noise environment—making UHF detection extremely effective. UHF sensors, typically built into or attached to the GIS via couplers or antennae, pick up these fast transients without interfering with system operation. This method offers excellent immunity to external noise and allows early detection of insulation defects such as voids, surface discharges, or corona, enabling preventive maintenance and reducing outage risk. KPM’s UHF PD solutions are optimized for GIS testing, offering precise, real-time diagnostics with minimal intrusion. 06 How PD Can Cause Catastrophic Failures If Left Undetected ? Partial Discharge (PD) is a small electrical spark that occurs within insulation systems due to defects like voids, cracks, or contamination. While each discharge releases only a small amount of energy, repeated activity degrades insulation over time, leading to progressive damage. If left undetected, PD can cause tracking, erosion, thermal breakdown, and eventually a complete insulation failure. This can result in catastrophic equipment breakdowns, fires, arc flash events, or prolonged outages. Early PD detection helps identify developing faults before they escalate, allowing timely intervention. KPM’s PD monitoring solutions provide accurate diagnostics to prevent such costly and dangerous failures. 07 How Often Should You Perform Partial Discharge Tests? The frequency of Partial Discharge (PD) testing depends on equipment type, criticality, age, and operating environment: New Installations: Test during commissioning to detect manufacturing or installation defects. Routine Maintenance: For critical assets (e.g., GIS, transformers, cables): annually or semi-annually For less critical systems: every 2–3 years Condition-Based Monitoring: For aging or high-risk equipment, use continuous or periodic online PD monitoring. After Major Events: Test after faults, repairs, or overloading. KPM offers both portable and continuous PD monitoring solutions tailored to asset condition and reliability goals. 08 What is Acoustic Emission for PD Detection – Emerging Trends? Acoustic Emission (AE) is an emerging technique in Partial Discharge (PD) detection, leveraging sound waves generated by PD activity within high-voltage equipment. AE sensors capture ultrasonic emissions, allowing non-intrusive, real-time monitoring of insulation health. Recent trends include the integration of AI algorithms for noise discrimination, wireless AE sensor networks for wide-area monitoring, and hybrid systems combining AE with UHF or HFCT methods for higher accuracy. KPM’s PD monitoring device incorporates these advancements by using sensitive AE sensors to detect PD in transformers, switchgear, and cable terminations. The system filters external noise and correlates AE signals with discharge activity, ensuring precise fault localization. Its compact design, cloud integration, and user-friendly interface make it suitable for continuous condition monitoring. This enables utilities to predict insulation failure early, plan timely maintenance, and improve grid reliability while aligning with modern digital substation standards. 09 What to Watch Out For while working on PD Testing in Motors and Generators ? Partial Discharge (PD) testing in motors and generators is critical for identifying early insulation deterioration, especially in high-voltage rotating machines. Key factors to watch out for include surface discharge near end windings, slot discharges, and internal PD caused by insulation voids. External noise interference, poor sensor placement, and incorrect test settings can lead to false readings or missed defects. It’s essential to differentiate between actual PD signals and electrical noise, especially in operational (online) testing. KPM’s PD tester addresses these challenges with high-frequency current transformer (HFCT) sensors, advanced noise separation algorithms. The device enables clear PD signal capture even in electrically noisy environments. It provides real-time analysis, waveform capture, and trend data, helping maintenance teams make informed decisions. KPM’s compact, rugged design and intuitive interface make it ideal for field diagnostics in motors and generators across power plants and industrial sites. 10 How to Interpret PD Signals? Interpreting Partial Discharge (PD) signals is crucial for diagnosing insulation issues accurately. Real-world case studies reveal that many failures arise not from PD presence, but from misinterpretation. In one case, a generator end-winding PD signal was mistaken for noise due to poor sensor grounding. Another involved a cable joint where increasing PD magnitude over time indicated a void-related breakdown—early intervention prevented a costly outage. Key learnings include the importance of phase-resolved PD (PRPD) pattern analysis, baseline signal comparison, and monitoring PD trends over time. Environmental noise, load conditions, and sensor placement significantly impact data quality. KPM’s PD tester simplifies interpretation with built-in PRPD pattern recognition, automated classification, and trend analytics. Its intelligent algorithms filter out noise and identify critical PD types—internal, surface, or corona—with high accuracy. By offering both real-time insights and historical tracking, KPM's tester empowers engineers to make confident maintenance decisions and extend asset life. FAQ about Monitoring testing : 01 What is the use of online partial discharge (PD) monitoring of panels using TEV and contact ultrasonic methods? Online partial discharge monitoring of medium-voltage and high-voltage panels using TEV (Transient Earth Voltage) and contact ultrasonic methods is used to detect and localize internal insulation defects and surface discharges without shutting down the equipment. Here's how each method contributes: 1. TEV (Transient Earth Voltage) Method Use: Detects internal PD activity, especially within air-insulated switchgear (AIS) and cable terminations inside metal-clad panels. How it works? When PD occurs inside enclosed metal-clad gear, it emits fast-rising electromagnetic pulses that induce transient voltages on the metal surfaces. TEV sensors pick up these signals from outside the panel. Benefit: Non-invasive, detects internal voids, tracking, and corona effects. 2. Contact Ultrasonic Method Use: Detects surface discharges, such as corona or tracking, which emit high-frequency acoustic signals. How it works? A piezoelectric sensor placed on the panel surface detects ultrasonic noise generated by PD activity, even through the enclosure. Benefit: Helps locate poor insulation, loose connections, or contamination issues causing discharge on the surface. Combined Use – Why It Matters? • Using both TEV and ultrasonic methods together enhances diagnostic accuracy: • • TEV gives insight into internal discharge severity and location. • • Ultrasonic confirms surface or near-surface PD sources and allows cross-verification. • • This dual-method approach is vital for: • • Preventive maintenance, • • Avoiding insulation failures, • • Improving switchgear reliability, and • • Extending equipment life without needing shutdowns.

KPM LA100+ & KPM LA 103+ is used for testing health of lightning arresters. It is also known as MOA Tester , Surge Arrester Tester/leakage current monitor/LCM etc. https://www.kpmtek.com/lightningarrestertestkit BLITZABLEITER-TESTKIT ( LCM ) Theorie Online 1 Ph Lightning Arrester Tester (mit Spannungs- und Strommessung) Katalog Der Lightning Arrester Tester (KPM LA-100+) von KPM ist das spezielle Instrument zur Bestimmung der elektrischen Eigenschaften von Lightning Arrestors (LA/MOSA). KPM LA-100+ is fähig zum Testen online unter Verwendung der Messung von LA Leckstrom und Leitungs-PT-Ergebnissen als direkt für die zuverlässigsten IEC . Produktmerkmale von Lightning Arrester Tester (KPM LA-100+) Großbild-LCD-Display, englisches Benutzermenü, einfach zu bedienen. Verwenden Sie Präzisionsabtastung und Fourier-Harmonische-Analyse-Techniken, um zuverlässige Daten zu erhalten. Misst den Widerstandsstrom der 3. Harmonischen, Total Resistive Current, Total Leakage Current, V-I Angle Wiederaufladbarer Akku, Kalenderuhr, eingebauter Mikrodrucker, kann 120 Gruppenmessdaten speichern Online 3 Ph LA Tester (mit Funk-E-Sensor und Strommessung) Katalog KPM's 3-Phasen-Überspannungsableiter-Tester(KPM LA-103+) ist das spezielle Instrument zum Nachweis der elektrischen Eigenschaften von Blitzableitern (LA/MOSA). KPM LA-103+ is fähig zum Testen LA online mit sechs Hauptmethoden gemäß IEC -: 1. Großbild-LCD-Display, vollständige englische Menüführung, einfach zu bedienen. 2 Verwendung von hochpräzisen Abtast- und Verarbeitungsschaltungen, fortschrittliche Techniken der Fourier-Harmonischen Analyse, um Daten zuverlässig zu machen. 3. Das Instrument verwendet Spannungs- und Stromsignale, die direkt von einem einzigartigen Hochgeschwindigkeits-Magnetisolations-Digitalsensor erfasst und eingegeben werden, um die Zuverlässigkeit und Sicherheit der Daten zu gewährleisten 4. Dieses Gerät kann anstelle der PT-Sekundärverdrahtung ein induziertes elektrisches Feld oder ein drahtloses Übertragungsverfahren verwenden. 5. Das Instrument muss keinen PT-Sekundäranschluss anschließen und kann den Widerstandsstrom direkt messen. 6. Es gibt sechs Testmethoden, die eine Menge Auswahlmöglichkeiten für die Person vor Ort bieten. ( PT Sekundärmethode, Induktionsmethode, drahtlose Übertragungsmethode, eine einzige Stromsynchronisationsmethode, pt Sekundärsynchronisationsmethode) Online 3 Ph LA Tester (mit Funk-E-Sensor und Strommessung) Katalog KPM's 3-Phasen-Überspannungsableiter-Tester(KPM LA-103+) ist das spezielle Instrument zum Nachweis der elektrischen Eigenschaften von Blitzableitern (LA/MOSA). KPM LA-103+ is fähig zum Testen LA online mit sechs Hauptmethoden gemäß IEC -: 1. Großbild-LCD-Display, vollständige englische Menüführung, einfach zu bedienen. 2 Verwendung von hochpräzisen Abtast- und Verarbeitungsschaltungen, fortschrittliche Techniken der Fourier-Harmonischen Analyse, um Daten zuverlässig zu machen. 3. Das Instrument verwendet Spannungs- und Stromsignale, die direkt von einem einzigartigen Hochgeschwindigkeits-Magnetisolations-Digitalsensor erfasst und eingegeben werden, um die Zuverlässigkeit und Sicherheit der Daten zu gewährleisten 4. Dieses Gerät kann anstelle der PT-Sekundärverdrahtung ein induziertes elektrisches Feld oder ein drahtloses Übertragungsverfahren verwenden. 5. Das Instrument muss keinen PT-Sekundäranschluss anschließen und kann den Widerstandsstrom direkt messen. 6. Es gibt sechs Testmethoden, die eine Menge Auswahlmöglichkeiten für die Person vor Ort bieten. ( PT Sekundärmethode, Induktionsmethode, drahtlose Übertragungsmethode, eine einzige Stromsynchronisationsmethode, pt Sekundärsynchronisationsmethode) Theory - LA Tester Theorie Blitzableitertest Blitzableiter – Theorie Ein Blitzableiter ist ein Gerät, das in Stromversorgungssystemen und Telekommunikationssystemen zum Schutz der Isolierung verwendet wird. und Leiter des Systems vor den schädlichen Auswirkungen von Blitzen. Der typische Blitzableiter hat einen Hochspannungsanschluss und einen Masseanschluss. Wenn ein Blitzstoß (oder Schaltstoß) entlang der Stromleitung zum Ableiter wandert, wird der Strom von der Überspannung durch den Ableiter umgeleitet, in den meisten Fällen zur Erde. Wenn der Schutz versagt oder fehlt, bringt ein Blitz, der in das elektrische System einschlägt, Tausende von Kilovolt ein, die die Übertragungsleitungen beschädigen und auch schwere Schäden an Transformatoren und anderen elektrischen oder elektronischen Geräten verursachen können. Durch Blitze verursachte extreme Spannungsspitzen in eingehenden Stromleitungen können auch elektrische Haushaltsgeräte beschädigen, weshalb sie für die Integrität von Lightning Arrester verdammt wichtig sind. Derzeit wird die Überwachung des Gesamtleckstroms (kapazitive und ohmsche Ströme) von vielen Energieversorgern verwendet. Die Ableitstrom-Überwachungsgeräte werden verwendet, um den Ableitstrom von Überspannungsableitern zu messen, und im Falle eines hohen Ableitstroms werden Überspannungsableiter ausgetauscht. Es wird jedoch davon ausgegangen, dass diese Methode nicht die narrensichere Methode ist, da der gesamte Leckstrom, der rein kapazitiv ist, nicht genau den Zustand der Überspannungsableiter angibt. Es gab Fälle, in denen die Überspannungsableiter gesprengt haben, obwohl der Gesamtableitstrom unter dem vom Hersteller vorgeschriebenen Grenzwert lag. Der Widerstandsstrom macht 15–30 % des Gesamtstroms aus, und da kapazitive und Widerstandsströme eine Flächenverschiebung von 90 Grad aufweisen, führt selbst eine beträchtliche Änderung des Widerstandsstroms zu einer sehr geringen Erhöhung des Gesamtstroms. Daher zeigt die Überwachung des Gesamtleckstroms möglicherweise nicht wirklich die Verschlechterung der ZnO-Scheibe an. Die Verschlechterung einer langen linearen ZnO-Scheibe führt im Allgemeinen zu Oberwellen im Leckstrom, wenn eine Systemspannung mit Grundfrequenz angelegt wird. Die Messung des Widerstandsstroms der dritten Oberwelle basiert auf der Filterung der Komponente der dritten Oberwelle aus dem Gesamtleckstrom. Leckströme in der Größenordnung von etwa 500 Mikroampere werden allgemein als sicher angesehen. Der ohmsche Anteil des Ableitstroms oder der Verlustleistung kann mit den folgenden Methoden bestimmt werden: Verwendung eines Spannungssignals als Referenz Kompensation der kapazitiven Komponente durch Verwendung eines Spannungssignals Kapazitive Kompensation durch Zusammenfassung der Ableitströme der drei Phasen Harmonische Analyse dritter Ordnung Direkte Bestimmung der Verlustleistung Oberschwingungsanalyse dritter Ordnung mit Kompensation von Oberschwingungen in der Spannung Erweitertes Überwachungssystem mit „Widerstandsstrom“-Komponentenberechnungen. Die Verwendung fortschrittlicher Diagnosemethoden reduziert die Wahrscheinlichkeit eines Ausfalls erheblich und vermeidet somit den Verlust von Menschen und Geld. Es ist daher wünschenswert, den Zustand von Überspannungsableitern in regelmäßigen Zeitabständen zu überprüfen, indem die Widerstandskomponente des kontinuierlichen Leckstroms im Betrieb gemessen wird, ohne den Ableiter stromlos zu machen. Zuverlässige Messungen werden durch die Instrumente erzielt, die auf dem Prinzip „Spannungssignal“ als Referenz basieren . Die regelmäßige Überwachung von LA hat viele Ausfälle in 66-kV- bis 765-kV-Umspannwerken verhindert. Die Werte dieses Stroms reichen normalerweise von Bruchteilen von Milliampere bis zu einigen Milliampere und sind durch Widerstandsstromschwankungen gekennzeichnet, deren Wert ein Indikator für die Verschlechterung des Überspannungsableiters ist. Die Widerstandskomponente dieses Leckstroms kann aufgrund unterschiedlicher Belastungen zunehmen, was zu Alterung und schließlich zum Ausfall des Ableiters führt. Häufig gestellte Fragen (FAQ) FAQ about lightning arrester testing : 01 What is the purpose of online testing for lightning arresters? The purpose of online testing for HV lightning arresters is to evaluate their health and operational condition while they remain energized and connected to the high-voltage system. This non-intrusive testing monitors critical parameters—especially leakage current—to detect early signs of insulation degradation, moisture ingress, or internal damage. By performing these tests without disconnecting the arrester, utilities can ensure continuous protection against transient over voltages, prevent unexpected failures, and schedule maintenance proactively, thereby enhancing system reliability and safety. 02 How does online testing differ from offline testing of lightning arresters? Online testing of lightning arresters is performed while the arrester is energized and connected to the live high-voltage system. It monitors parameters like leakage current and voltage in real time to assess the arrester’s condition without interrupting power supply or removing the arrester from service. Offline testing, on the other hand, requires disconnecting the arrester from the system and applying controlled test voltages or impulses in a laboratory or test environment. This allows detailed diagnostic tests, such as insulation resistance, dielectric withstand, and energy absorption capability, but causes downtime and power disruption. In summary, online testing enables continuous condition monitoring without service interruption, while offline testing offers more comprehensive diagnostics but requires taking the arrester out of operation. 03 What parameters are measured during online testing of lightning arresters? During online testing of lightning arresters, the key parameters measured include: Leakage current: Both resistive and capacitive components are monitored to detect insulation deterioration or moisture ingress. Discharge current: Measures the arrester’s response to transient overvoltages. Voltage across the arrester: To correlate leakage current with operating voltage. Power factor (dissipation factor): Indicates the level of insulation losses and ageing. Harmonic content of leakage current: Helps identify partial discharges or defects. Continuous monitoring of these parameters helps identify early signs of failure and evaluate arrester condition in real time. 04 What types of leakage current patterns indicate a failing arrester? In surge arresters (typically metal oxide varistor or MOV-based), leakage current patterns can offer early warning signs of deterioration or failure. Here are the key types of leakage current patterns that indicate a failing arrester: 1. Increasing Total Leakage Current Over Time What it means: The arrester is gradually losing its insulation resistance. Cause: Ageing of the zinc oxide blocks or moisture ingress. Warning: A consistent upward trend is a red flag — especially under normal system voltage. 2. High Resistive Leakage Current What it means: An increase in resistive (non-linear) current indicates internal degradation. Why it's critical: Unlike capacitive leakage (which is normal), resistive leakage is a sign of arrester deterioration. How it shows up: Measured using third-harmonic analysis or waveform separation techniques. 3. Sudden Jumps or Spikes in Leakage Current What it means: Possible internal flashover, moisture ingress, or external contamination. Typical sign: A sharp increase without a gradual trend. Next step: Immediate inspection or replacement is usually advised. 4. Leakage Current with Strong Daily Variation What it means: Leakage current rises during daytime due to heating and falls at night — abnormal if variation is large. Potential cause: Moisture or contamination interacting with thermal cycles. 5. Phase Shift Changes in Leakage Current What it means: The phase angle between voltage and leakage current shifts — especially the third harmonic. Used in: Online monitoring systems. Why it matters: Indicates the balance between capacitive and resistive components is shifting unfavourably. 6. Leakage Current under Wet Conditions What it means: If leakage current increases dramatically during rain or fog, it may indicate surface tracking or contamination. Action: Cleaning or replacing the arrester may be required. 05 Which standard is most widely accepted worldwide? The IEC 60099-4 standard (from the International Electrotechnical Commission) is the most widely accepted global standard for metal-oxide lightning arresters. It defines performance criteria, testing procedures—including online monitoring methods—and requirements for high-voltage arresters used in power systems. The B2 method for assessing leakage current in metal-oxide surge arresters is detailed in the IEC 60099-4 standard — specifically in IEC 60099-4:2013, titled "Surge arresters — Part 4: Metal-oxide surge arresters without gaps for AC systems — Methods of test". This standard outlines how to measure and analyze leakage current components, including the resistive part used in the B2 method, for condition assessment and online monitoring of high-voltage lightning arresters. 06 Do you know Which parameter are measured in IEC 60099-4 B2 Method ? In the B2 method, leakage current measurement is used to evaluate the condition of a metal-oxide lightning arrester by analyzing its resistive (non-capacitive) leakage current component while the arrester is energized at operating voltage. Here’s how it works: Measurement: The total leakage current flowing through the arrester is measured using sensitive instruments. This current consists of a capacitive component (normal and stable) and a resistive component (indicative of arrester aging or damage). Resistive component isolation: The B2 method focuses on isolating the resistive part of the leakage current, as an increase in resistive current usually signals degradation, moisture ingress, or damage to the arrester’s internal varistors. Analysis: By comparing the measured resistive leakage current to baseline or manufacturer’s reference values, the condition of the arrester can be assessed. A rising resistive leakage current over time indicates deteriorating insulation and the potential for failure. Trend monitoring: Periodic measurements allow trend analysis, helping predict the arrester’s remaining life and plan maintenance before catastrophic failure occurs. This method is widely used because it is sensitive, non-invasive, and can be performed online without disconnecting the arrester. 07 Which compensations are taken care in B2 method typically In the B2 method, leakage current measurement is used to evaluate the condition of a metal-oxide lightning arrester by analyzing its resistive (non-capacitive) leakage current component while the arrester is energized at operating voltage. Here’s how it works: Measurement: The total leakage current flowing through the arrester is measured using sensitive instruments. This current consists of a capacitive component (normal and stable) and a resistive component (indicative of arrester aging or damage). Resistive component isolation: The B2 method focuses on isolating the resistive part of the leakage current, as an increase in resistive current usually signals degradation, moisture ingress, or damage to the arrester’s internal varistors. Analysis: By comparing the measured resistive leakage current to baseline or manufacturer’s reference values, the condition of the arrester can be assessed. A rising resistive leakage current over time indicates deteriorating insulation and the potential for failure. Trend monitoring: Periodic measurements allow trend analysis, helping predict the arrester’s remaining life and plan maintenance before catastrophic failure occurs. This method is widely used because it is sensitive, non-invasive, and can be performed online without disconnecting the arrester.

KPM Engineering ( A Leading S/S test equipment Company ) and Wellman Power ( A leading CT PT manufacturer ) collaborates to form a Development Center For Instrument Transformers ( DCIT ) with state of art test equipment and standards . It is an initiative to serve power sector @ www.kpmtek.com DCIT - Entwicklungszentrum für Messwandler KPM Engineering (Ein führendes S/S-Testgerät Company, das S/S bis zu 765 kV Level bedient) ) _cc781905-5cde-3194-bb3b-136bad5cf58 CT PT-Hersteller bis zu 132KV ) arbeitet zusammen, um a zu bildenEntwicklungszentrum für Messwandler ( DCIT ) mit modernster Prüftechnik und Standards . Es ist eine Initiative, um Power Sector Kunden mit unübertroffenen Qualitäts- und Präzisionsprodukten zu bedienen. DCIT konzentriert sich auf drei Hauptaspekte von Messwandlern 1) Conductor 2) Insulation_cc781905 -5cde-3194-bb3b-136bad5cf58d_ _cc781905-5cde-3194- bb3b-136bad5cf58d_3) Core Einige Schlüsselbereiche von F & E in DCIT sind -: Charakterisierung von Spannung instrument transformators unter nicht sinusförmigen Bedingungen Anwendung von instrument transformators in der Netzqualitätsbewertung Messtechnische Leistungen von Spannung und Strom instrument transformators in Oberschwingungsmessungen Erkennung und Korrektur systematischer Fehler in messwandler In Kontakt kommen

Our monitoring solutions consist of Online power cable temperature monitoring using optical sensors, Online cable partial discharge monitoring, Online Earth Resistance Monitoring etc. ONLINE-TE- UND ERDUNGSÜBERWACHUNG Penta PD - Teilentladungsdetektor Mehr wissen Penta PD Teilentladungsdetektor Teilentladungsdetektor Penta-PD ist ein idealer Partner für zustandsbasierte Wartungsprogramme. Teilentladungsdetektor Penta-PD enthält alle 5 Arten von Online-PD-Sensortechnologie. Informationen von mehreren Sensoren verleihen dem Teilentladungsdetektor Penta-PD die Vielseitigkeit, verschiedene Arten von TE in einer Vielzahl von Umspannwerksgeräten zu erkennen. Erkennungsbandbreite 1.TEV - Transiente Erdspannung, Bereich 3 ~ 100 MHz 2.UHF – Ultrahochfrequenz 300MHz～2000 MHz 3.UA – Ultraschall 40 ～ 200 KHz Messbereich 1.UA: -90~80dB 2. TEV: -80 ~ 10 dBm 3. UHF: -80 ~ 10 dBm. Sensor: a) Ultraschallsensor: 20~200 (kHz); b) EV-Sensor (Transient Earth Voltage): 5 ~ 100 MHz; c) UHF-Sensor: 300 ~ 2000 (MHz), mit gerichteter Empfangscharakteristik. Penta PD - Teilentladungsdetektor Mehr wissen Penta PD Teilentladungsdetektor Teilentladungsdetektor Penta-PD ist ein idealer Partner für zustandsbasierte Wartungsprogramme. Teilentladungsdetektor Penta-PD enthält alle 5 Arten von Online-PD-Sensortechnologie. Informationen von mehreren Sensoren verleihen dem Teilentladungsdetektor Penta-PD die Vielseitigkeit, verschiedene Arten von TE in einer Vielzahl von Umspannwerksgeräten zu erkennen. Erkennungsbandbreite 1.TEV - Transiente Erdspannung, Bereich 3 ~ 100 MHz 2.UHF – Ultrahochfrequenz 300MHz～2000 MHz 3.UA – Ultraschall 40 ～ 200 KHz Messbereich 1.UA: -90~80dB 2. TEV: -80 ~ 10 dBm 3. UHF: -80 ~ 10 dBm. Sensor: a) Ultraschallsensor: 20~200 (kHz); b) EV-Sensor (Transient Earth Voltage): 5 ~ 100 MHz; c) UHF-Sensor: 300 ~ 2000 (MHz), mit gerichteter Empfangscharakteristik. PQ-Analysator Light Mehr wissen Modell KPM PQ Light 1) Produktkomponententyp Mehrphasiger Hand-Leistungsmesser 2) Phasenbezeichnung 3PH4W (ohne In) 3PH3W 1PH2W (LN); 1PH2W(LL);1PH3W(LLN) 3. Geräteanwendung • Leistungsanalyse • Energiezähler 4. Eingangstyp • Externe Rogowski-Spule • Externer Stromwandler (nur 333 mV) 5. Anzeige 3,5-Zoll-TFT-Bildschirmanzeige 6. Abtastrate 8.000 Abtastungen pro Sekunde 7. Harmonische 52. Max 8. Mechanische Eigenschaften • Gewicht 350 g • Maße L x B x T: 21,5 x 10 x 3,5 cm PQ-Analysator + Mehr wissen Modell KPM PQ Light 1) Produktkomponententyp Mehrphasiger Hand-Leistungsmesser 2) Phasenbeschreibung 3PH4W (mit In) 3PH3W 1PH2W (LN); 1PH2W(LL);1PH3W(LLN) 3. Geräteanwendung • Leistungsanalyse • Energiezähler 4. Eingangstyp • Externe Rogowski-Spule • Externer Stromwandler (nur 333 mV) 5. Anzeige 3,5-Zoll-TFT-Bildschirmanzeige 6. Abtastrate 8.000 Abtastungen pro Sekunde 7. Harmonische 52. Max 8. PC-Konnektivität 8. Mechanische Eigenschaften • Gewicht 350 g • Maße L x B x T: 21,5 x 10 x 3,5 cm PQ-Analysator + Mehr wissen Modell KPM PQ Light 1) Produktkomponententyp Mehrphasiger Hand-Leistungsmesser 2) Phasenbeschreibung 3PH4W (mit In) 3PH3W 1PH2W (LN); 1PH2W(LL);1PH3W(LLN) 3. Geräteanwendung • Leistungsanalyse • Energiezähler 4. Eingangstyp • Externe Rogowski-Spule • Externer Stromwandler (nur 333 mV) 5. Anzeige 3,5-Zoll-TFT-Bildschirmanzeige 6. Abtastrate 8.000 Abtastungen pro Sekunde 7. Harmonische 52. Max 8. PC-Konnektivität 8. Mechanische Eigenschaften • Gewicht 350 g • Maße L x B x T: 21,5 x 10 x 3,5 cm Penta PD - Teilentladungsdetektor Mehr wissen Penta PD Teilentladungsdetektor Teilentladungsdetektor Penta-PD ist ein idealer Partner für zustandsbasierte Wartungsprogramme. Teilentladungsdetektor Penta-PD enthält alle 5 Arten von Online-PD-Sensortechnologie. Informationen von mehreren Sensoren verleihen dem Teilentladungsdetektor Penta-PD die Vielseitigkeit, verschiedene Arten von TE in einer Vielzahl von Umspannwerksgeräten zu erkennen. Erkennungsbandbreite 1.TEV - Transiente Erdspannung, Bereich 3 ~ 100 MHz 2.UHF – Ultrahochfrequenz 300MHz～2000 MHz 3.UA – Ultraschall 40 ～ 200 KHz Messbereich 1.UA: -90~80dB 2. TEV: -80 ~ 10 dBm 3. UHF: -80 ~ 10 dBm. Sensor: a) Ultraschallsensor: 20~200 (kHz); b) EV-Sensor (Transient Earth Voltage): 5 ~ 100 MHz; c) UHF-Sensor: 300 ~ 2000 (MHz), mit gerichteter Empfangscharakteristik. Penta PD - Teilentladungsdetektor Mehr wissen Penta PD Teilentladungsdetektor Teilentladungsdetektor Penta-PD ist ein idealer Partner für zustandsbasierte Wartungsprogramme. Teilentladungsdetektor Penta-PD enthält alle 5 Arten von Online-PD-Sensortechnologie. Informationen von mehreren Sensoren verleihen dem Teilentladungsdetektor Penta-PD die Vielseitigkeit, verschiedene Arten von TE in einer Vielzahl von Umspannwerksgeräten zu erkennen. Erkennungsbandbreite 1.TEV - Transiente Erdspannung, Bereich 3 ~ 100 MHz 2.UHF – Ultrahochfrequenz 300MHz～2000 MHz 3.UA – Ultraschall 40 ～ 200 KHz Messbereich 1.UA: -90~80dB 2. TEV: -80 ~ 10 dBm 3. UHF: -80 ~ 10 dBm. Sensor: a) Ultraschallsensor: 20~200 (kHz); b) EV-Sensor (Transient Earth Voltage): 5 ~ 100 MHz; c) UHF-Sensor: 300 ~ 2000 (MHz), mit gerichteter Empfangscharakteristik. PQ-Analysator + Mehr wissen Modell KPM PQ Light 1) Produktkomponententyp Mehrphasiger Hand-Leistungsmesser 2) Phasenbeschreibung 3PH4W (mit In) 3PH3W 1PH2W (LN); 1PH2W(LL);1PH3W(LLN) 3. Geräteanwendung • Leistungsanalyse • Energiezähler 4. Eingangstyp • Externe Rogowski-Spule • Externer Stromwandler (nur 333 mV) 5. Anzeige 3,5-Zoll-TFT-Bildschirmanzeige 6. Abtastrate 8.000 Abtastungen pro Sekunde 7. Harmonische 52. Max 8. PC-Konnektivität 8. Mechanische Eigenschaften • Gewicht 350 g • Maße L x B x T: 21,5 x 10 x 3,5 cm PQ-Analysator + Mehr wissen Modell KPM PQ Light 1) Produktkomponententyp Mehrphasiger Hand-Leistungsmesser 2) Phasenbeschreibung 3PH4W (mit In) 3PH3W 1PH2W (LN); 1PH2W(LL);1PH3W(LLN) 3. Geräteanwendung • Leistungsanalyse • Energiezähler 4. Eingangstyp • Externe Rogowski-Spule • Externer Stromwandler (nur 333 mV) 5. Anzeige 3,5-Zoll-TFT-Bildschirmanzeige 6. Abtastrate 8.000 Abtastungen pro Sekunde 7. Harmonische 52. Max 8. PC-Konnektivität 8. Mechanische Eigenschaften • Gewicht 350 g • Maße L x B x T: 21,5 x 10 x 3,5 cm PQ-Analysator + Mehr wissen Modell KPM PQ Light 1) Produktkomponententyp Mehrphasiger Hand-Leistungsmesser 2) Phasenbeschreibung 3PH4W (mit In) 3PH3W 1PH2W (LN); 1PH2W(LL);1PH3W(LLN) 3. Geräteanwendung • Leistungsanalyse • Energiezähler 4. Eingangstyp • Externe Rogowski-Spule • Externer Stromwandler (nur 333 mV) 5. Anzeige 3,5-Zoll-TFT-Bildschirmanzeige 6. Abtastrate 8.000 Abtastungen pro Sekunde 7. Harmonische 52. Max 8. PC-Konnektivität 8. Mechanische Eigenschaften • Gewicht 350 g • Maße L x B x T: 21,5 x 10 x 3,5 cm Häufig gestellte Fragen (FAQ) FAQ about Monitoring testing : 01 What is the use of online partial discharge (PD) monitoring of panels using TEV and contact ultrasonic methods? Online partial discharge monitoring of medium-voltage and high-voltage panels using TEV (Transient Earth Voltage) and contact ultrasonic methods is used to detect and localize internal insulation defects and surface discharges without shutting down the equipment. Here's how each method contributes: 1. TEV (Transient Earth Voltage) Method Use: Detects internal PD activity, especially within air-insulated switchgear (AIS) and cable terminations inside metal-clad panels. How it works? When PD occurs inside enclosed metal-clad gear, it emits fast-rising electromagnetic pulses that induce transient voltages on the metal surfaces. TEV sensors pick up these signals from outside the panel. Benefit: Non-invasive, detects internal voids, tracking, and corona effects. 2. Contact Ultrasonic Method Use: Detects surface discharges, such as corona or tracking, which emit high-frequency acoustic signals. How it works? A piezoelectric sensor placed on the panel surface detects ultrasonic noise generated by PD activity, even through the enclosure. Benefit: Helps locate poor insulation, loose connections, or contamination issues causing discharge on the surface. Combined Use – Why It Matters? • Using both TEV and ultrasonic methods together enhances diagnostic accuracy: • • TEV gives insight into internal discharge severity and location. • • Ultrasonic confirms surface or near-surface PD sources and allows cross-verification. • • This dual-method approach is vital for: • • Preventive maintenance, • • Avoiding insulation failures, • • Improving switchgear reliability, and • • Extending equipment life without needing shutdowns.

Transformer on-load tap changer analyzer is a combination of Transition Timer & Winding Resistance Tester. In KPM Engineering Sol. Pvt. Ltd we are one point solution for all type of power system testing need |https://www.kpmtek.com/oltcanalyzer ON LOAD TAP CHANGER (OLTC) ANALYSATOR Mehr sehen Kontaktiere uns KPM-Stufenschalter-Analysator Transformator-Laststufenschalter-Analysator ist eine Kombination aus Übergangstimer & Wicklungswiderstandstester. KPM Transformer Laststufenschalter-Analysator ist ein umfassendes Messgerät zur Messung und Analyse der elektrischen Leistungskennzahlen von Leistungstransformatoren und speziellen Transformator-Laststufenschaltern Stromversorgungssysteme. Es übernimmt die Mikrocomputersteuerung und kann durch das Design der Präzisionsmessschaltung die genaue Messung der Übergangszeit, der Übergangswellenform, des Übergangswiderstands und der Dreiphasensynchronisation des Ein -Stufenschalter laden. Der Anwender kann den Stufenschalter mit & ohne Trafowicklung testen. Das Instrument hat die Funktionen zum Anzeigen, Analysieren, Speichern und Drucken der gemessenen Daten. Es ist möglich, den potenziellen Ausfall des Laststufenschalters bei der vorbeugenden Prüfung von Leistungsgeräten und der Überholung zu diagnostizieren des Transformators, was für die Verbesserung der Betriebssicherheit des Energiesystems von großer Bedeutung ist. Technische Parameter 1> Ausgangsstrom: 1,0 A, 0,5 A, 0,3 A 2> Widerstandsbereich: 1,0 A Zahnrad 0,1 ~ 10 Ω, 0,5 A Zahnrad 5 ~ 20 Ω, 0,3 A Zahnrad 10 ~ 40 Ω 3> Genauigkeit der Widerstandsmessung: 0,1 Ω ~ 1 Ω ± 0,1 Ω, 1 Ω ~ 40 Ω ± 1 % (außer 1 Ω) 4> Übergangszeitmessung: Bereich 1 – 250 ms, Genauigkeit: 1 ms – 100 ms ± 0,1 ms, 100 ms – 250 ms ± 1 % 5> Abtastfrequenz: 10 ~ 20 kHz 6> Dreiphasen-Synchronisation: 0,01 ms 7> Arbeitstemperatur: 0 ~ 40 ° C 8> Umgebungsfeuchtigkeit: ≤90 % RH, keine Kondensation 9> Abmessungen (mm): 420 × 350 × 220, Gewicht: 12 kg (einschließlich Zubehör)

Battery testing & monitoring Equip. for Utility Battery Banks , Battery Internal ResistanceTest Kit , Battery Monitoring System, Battery Data Logger, Battery Discharge Kits with data acquisition units BATTERIETESTKITS ( UTILITY ) Batteriewiderstand u Leitfähigkeitstester Kontaktiere uns BA-01 Batteriezustandsanalysator Der BA-01 Battery Condition Anlayzer ist ein aktualisierter Tester, der ein sehr effektives und wirtschaftliches Batteriemanagementgerät zum Testen des Batterieinnenwiderstands (oder der Leitfähigkeit) und der Spannung ist. Es hilft Ihnen, schwache Batterien zu eliminieren, um die Leistung Ihrer Batteriesysteme sicherzustellen. Es ist in der Lage, den Innenwiderstand (oder die Leitfähigkeit) von Batterien genau und konsistent zu messen, ventilgeregelte Bleisäure (VRLA), belüftete Bleisäure (VLA) und Ni-Cd-Batterien, die die Hauptbestandteile von kritischen Standby-Stromversorgungssystemen sind. Dieser Batterietester wird häufig von Dienstleistern, Betriebs- und Wartungsteams für Batteriemanagement und -messung eingesetzt, um die Leistungsintegrität in verschiedenen Branchen sicherzustellen Akku-Datenlogger Kontaktiere uns Batteriedatenlogger BDL ist ein aktualisierter Batteriedatenlogger, um die IEEE-Messstandards für Batteriespannung, Strangspannung, Strom und Umgebungstemperatur zu erfüllen. Es ist von 12 V bis 700 V für verschiedene Batteriesysteme angepasst. Und es lässt sich einfach für alle Batteriesysteme erweitern. Mit der WLAN-Kommunikation können Sie problemlos vollständige Daten anzeigen und Testberichte in der PC-Software erstellen. Für einen Schnelltest des Batterieinnenwiderstands/-leitwerts siehe auch BA-01 Batteriezustandsanalysator . Batterieladebank Kontaktiere uns KPM Batterieladebank Wir bieten eine Reihe kundenspezifischer Batterielastbänke mit vielen verschiedenen Modellen für Konstantstrom-Entladetests und Batteriekapazitätstests an. Sie decken einen weiten Spannungsbereich von 12V bis 480V Nennspannungen bei Strömen bis 600A ab. Sie sind in verschiedenen Branchen weit verbreitet. Mit dem optionalen Batteriedatenerfassungskoffer (DAC) können die Entladewerte JEDER Zelle gleichzeitig in der Batterieladebank und der PC-Software überwacht werden, indem die Datenansichtssoftware von KPM verwendet wird. Derselbe DAC in Batterieladebank kann auch unabhängig mit „String DAC“ arbeiten, um ein anderes Produkt herzustellen, Batteriedatenlogger BDL-3926C . Für einen Schnelltest des Batteriezustands siehe bitte BA-01 Batteriezustandsanalysator das den Innenwiderstand/Leitfähigkeit der Batterie in Sekunden testet. Häufig gestellte Fragen FAQ about all our battery utility : 01 What is the purpose of battery utility testing in backup power systems? Battery utility testing ensures the reliability, health, and performance of backup power systems used in utilities, substations, data centers, and critical infrastructure. Over time, batteries degrade due to factors like temperature, charge-discharge cycles, and age. Testing helps detect early signs of failure such as increased internal resistance, reduced capacity, or imbalance among cells. This enables timely maintenance or replacement, preventing unexpected power loss during outages. Utility testing validates whether batteries meet required discharge durations and ensures compliance with standards like IEEE 450 or IEC 60896. Regular testing minimizes downtime, enhances operational safety, and protects expensive downstream equipment. KPM provides advanced battery analyzers and constant current discharge kits designed for utility-scale battery banks. These instruments measure internal resistance, voltage, and capacity under load conditions. KPM’s systems are aligned with international testing standards and are used by utilities to perform periodic health checks, identify weak cells, and ensure uninterrupted power backup readiness. 02 What safety precautions must be taken during battery testing? Battery testing involves handling high voltages, currents, and hazardous chemicals, so strict safety precautions are essential. Always wear appropriate personal protective equipment (PPE) such as insulated gloves, eye protection, and flame-resistant clothing. Ensure proper ventilation, especially for lead-acid batteries that emit hydrogen gas during charging or discharging. Isolate the battery bank from the load before testing, and use insulated tools to prevent short circuits. Verify polarity before connecting test equipment to avoid damage or sparking. Never allow metal objects near open battery terminals. Maintain safe distances and use warning signs during high-current discharge tests. Monitor temperature rise and terminate testing if overheating or voltage instability is observed. Follow the manufacturer’s guidelines and applicable standards (IEEE, IEC) during every procedure. KPM’s battery analyzers and discharge testers are equipped with multiple safety features such as overcurrent protection, reverse polarity alarms, thermal cutoffs, and auto-shutdown. KPM also provides user training and safety documentation to ensure proper and secure operation. 03 How does internal resistance measurement indicate battery health? Internal resistance (IR) is the opposition a battery offers to current flow within its own structure. As batteries age or degrade, their internal resistance increases due to chemical wear, sulfation (in lead-acid), or electrode deterioration. Here's how it reflects battery health: Low IR = Healthy battery: Indicates good electrolyte condition, intact electrodes, and low energy loss during discharge. High IR = Degraded battery: Results in voltage drops under load, reduced capacity, and heat generation during operation. Rising IR over time signals aging or developing faults, even if voltage appears normal. Sudden spikes in IR may indicate failing cells or poor interconnections. Thus, internal resistance is a quick, non-invasive diagnostic metric used to identify weak or failing batteries before they cause critical power failures. KPM’s battery analyzers measure IR accurately across large battery banks, providing real-time indicators of cell health and enabling predictive maintenance. 04 What are the key parameters measured by a battery analyzer? A battery analyzer is used to assess the condition and performance of individual cells and complete battery banks. The key parameters it typically measures include: Internal Resistance (IR):Indicates the battery’s ability to deliver current. Higher resistance means deterioration or aging. Voltage (V): Measures the open-circuit voltage of each cell or unit to check state-of-charge and overall health. Conductance (optional): Used as an alternative to resistance in some analyzers to determine battery condition. Temperature (°C): Affects performance and safety. Monitoring ensures accurate readings and helps prevent overheating. State of Health (SoH): Some analyzers estimate the health of the battery based on historical and real-time data. Cell Imbalance: Detects inconsistencies among cells in a battery bank, which can lead to system failure. Ripple Voltage (if applicable): Monitors AC noise on DC lines, often in UPS and telecom systems. KPM’s battery analyzers measure all key parameters—internal resistance, voltage, temperature, and cell imbalance—with high accuracy. Features include: High-precision sensors and rugged design for utility environments, Built-in safety features (reverse polarity, overvoltage alerts), PC software for data logging, trending, and report generation. Widely used in substations, power plants, and telecom towers for preventive maintenance and health diagnostics. 05 Can battery conductivity testing detect early-stage cell degradation ? Conductivity is a measure of a battery’s ability to pass electrical current. In healthy batteries, conductivity is high because the internal chemical pathways are clean and efficient. As a cell begins to degrade (due to sulfation, corrosion, electrolyte breakdown, or plate shedding), these pathways become obstructed, causing conductivity to decrease—even before voltage or capacity noticeably drops. Early Detection: Changes in conductivity often occur before performance failures, allowing for early intervention. Identifies Weak Cells: It helps isolate underperforming cells within a battery bank. Prevents Failures: Enables predictive maintenance and avoids costly downtime. Monitors Aging: Tracks gradual degradation over time for lifecycle management. KPM’s advanced battery analyzers can perform conductivity or internal resistance-based diagnostics, depending on battery type. These tools help utility and industrial users identify subtle degradation trends early, plan timely maintenance, and ensure long-term battery reliability. 06 Why is constant current discharge testing crucial in critical power applications? Constant current discharge testing is essential because it directly evaluates a battery’s actual capacity and performance under load, simulating real-world power demands. In critical power applications—such as substations, hospitals, data centers, and telecom systems—batteries must supply reliable power during outages or switching events. If a battery cannot sustain the required current for the expected duration, it risks system failure, data loss, or equipment damage. Key reasons it’s crucial: Confirms True Capacity: Validates if the battery can deliver its rated ampere-hours (Ah) under specified load. Identifies Weak Batteries: Detects hidden degradation not revealed by voltage or internal resistance alone. Reveals Runtime Performance: Simulates backup duration under real conditions. Supports Preventive Maintenance: Enables data-driven decisions for battery replacement and servicing. KPM’s constant current discharge kits are designed for high-reliability environments. They offer programmable loads, auto cut-off, data logging, and safety features, ensuring accurate, safe, and standards-compliant capacity testing for critical backup systems. 07 How is the battery's capacity (Ah) validated through a discharge test? Battery capacity, measured in ampere-hours (Ah), is validated by discharging the battery at a constant current until it reaches its specified cut-off voltage. The total time it takes to reach that voltage determines the actual capacity using the formula: Capacity (Ah)=Discharge Current (A) × Discharge Time (hours) Example: If a battery is discharged at 10 A and it takes 5 hours to reach the end voltage, the delivered capacity is: 10 A × 5 hrs = 50 Ah This result is then compared to the battery’s rated capacity (e.g., 100 Ah). If it delivers significantly less, it indicates degradation or failure. KPM’s constant current discharge kits precisely control and monitor the discharge current and voltage. They record time-stamped data, auto-calculate Ah, and generate test reports. These tools comply with standards like IEEE 450, ensuring reliable capacity validation for utility and industrial batteries. 08 What role does ambient temperature play in discharge test accuracy? Ambient temperature has a significant impact on the accuracy and outcome of battery discharge tests. Battery performance is highly temperature-sensitive, particularly for lead-acid, lithium-ion, and Ni-Cd chemistries. At High Temperatures: Battery capacity appears higher because chemical reactions speed up. Can lead to overestimation of real-world performance. Increases the risk of thermal runaway or cell damage. At Low Temperatures: Capacity drops due to slower electrochemical activity. May result in underestimated performance and early cut-off in tests. Internal resistance rises, leading to voltage drops under load. Deviations from this temperature should be noted and corrected using manufacturer-specified compensation factors or software. KPM’s battery discharge testers and analyzers include temperature monitoring sensors. The system records ambient and cell temperatures during testing and can apply correction factors to ensure accurate capacity evaluation under varying environmental conditions. 09 How do we determine end-voltage for discharge cut-off? The end-voltage, or cut-off voltage, is the minimum voltage at which a battery should be discharged to avoid deep discharge damage and to ensure reliable capacity measurement. It is determined based on the battery type, rated capacity, discharge rate (C-rate), and manufacturer specifications. For example, a 12V lead-acid battery typically has an end-voltage of 10.5V (1.75V per cell) at standard rates. Discharging below this threshold can lead to irreversible sulfation, reduced life, or failure. In lithium-ion batteries, cut-off is often set higher (e.g., 2.5V–3.0V per cell) to protect cell chemistry and safety. The correct end-voltage ensures consistent and safe testing across different test cycles. It must also be adjusted for ambient temperature and load current, as higher loads can cause greater voltage sag. KPM’s discharge kits allow users to program end-voltage settings per battery specs. The system automatically halts testing at the preset voltage to prevent over-discharge and protect battery health. 10 How can test data be used to predict battery end-of-life? Battery test data—such as internal resistance, voltage, capacity, and temperature trends—can be analyzed over time to accurately predict end-of-life (EOL). A consistent increase in internal resistance and decline in capacity (Ah) are key indicators of aging. When a battery can no longer deliver at least 80% of its rated capacity, it is generally considered at the end of its useful life. Regular discharge tests and impedance measurements create a performance history that reveals degradation rates, enabling predictive analytics. By identifying abnormal changes, such as faster resistance rise in one cell compared to others, maintenance teams can isolate failing units early. Trend-based monitoring allows scheduling replacements before failures occur, ensuring reliability in critical applications. KPM’s analyzers and discharge kits offer data logging, graphing, and reporting features that help utilities and industries track battery health over time, enabling data-driven EOL prediction and proactive asset management.

In KPM Engineering Solution Pvt. Ltd our solutions are Thermal Imager camera, fever monitoring solution, Relay Test Kit, CT/PT Analyzer, Oil BDV, Transformer Testing , Circuit Breaker Testing, LA Testing, Ground Testing, Partial Discharge Testing. Visit www.kpmtek.com for details UNTERSTATION PRÜFGERÄT - WERBUNG All Videos All Videos Video abspielen Teilen Ganzer Kanal Dieses Video Facebook Twitter Pinterest Tumblr Link kopieren Link kopiert Search videos Video suchen... Wird abgespielt KPM KFA320 00:35 Video abspielen Wird abgespielt KPM intro (M) 01:16 Video abspielen Wird abgespielt KPM India - Your Reliable Electrical Test Equipment Solution Provider 01:20 Video abspielen

KPM Solutions supplies precision ultra high voltage test equipment including Relay Test Kits, CT/PT Analyzers, TTR, Winding Resistance & PD Testers. Know more POWER SYSTEM PRÜFGERÄTE KPM VIT-100 KPM Vacuum Interrupter Tester KPM ICAL Pro KPM Instrument Calibrator KPM MT 3000 D+ Three phase Reference Standard Energy Meter specially used for energy meter on-site test KPM PSR12 KPM’s Power Signal Recorder 12 KPM TD12 A+ Automatic 12KV Capacitance & Dissipation Factor Test Set KPM TWRT YY 3 Phase Winding Resistance Tester with automatic change of connections Energy Meter Test Benchs 3 phase energy meter test bench for testing energy meters of 0.5 to 0.02 accuracy levels. KPM-SG_70kV, 70mA Cable Testing Surge Generator / Thumper KPM LBVV 240V 110A Battery Discharge Kit (Constant Current , Constant Power) KPM LB4815+ Battery Load Bank , Constant Current, Constant Power , Constant Resistance Mode KPM AL- 80H Battery Pack Air Leak Tester KPM AL- 80L KPM Battery Pack Air Leak Tester KPM CCDB + Series KPM Li Ion Cell Charge Discharge & Balancer KPM CCDB SERIES KPM Li Ion Cell Charge Discharge & Balancer KPM PDH SERIES KPM Pack Discharging (800V / 1000V) KPM PCD Series KPM li Ion Battery Pack Charge Discharge Test kit PCDH Series KPM li Ion Battery Pack Charge Discharge Test kit ( 800V / 1000V ) KPM MCD 2550 KPM charging , discharging & cyclic charging - discharging of Li Ion modules , Constant Current Discharge KPM CCDB 5V 15A KPM Li-ion Cell Charge Discharge Balancing kit, Constant Current Discharge (5V, 15 A) KPM BCD 0550 KPM Li-ion Battery Charging Discharging kit , Constant Current Discharge (5V, 50 A), Used for high current applications like forklifts, cranes etc. KPM BCD 0530 KPM Li-ion Battery Charging Discharging kit (5V, 30A), Constant Current Discharge , Used for high current applications like forklifts, cranes etc. KPM BCD B-4X KPM Li-ion Battery Charging Discharging kit with 4 independent channels (100A), Constant Current Discharge , Used for high current applications like forklifts, cranes etc. KPM KS30 KPM SF6 Gas Analyzer KPM BA-02 Battery Analyzer for testing battery internal resistance, conductance and voltage. Auto increase in the serial number of results using touch and test function, this also reduces testing time KPM Battery Data Logger To check Battery voltage, current and temperature. These sensors are integrated with battery discharge units KPM LA 103 Pro LA Tester measures and displays the values of Total Leakage Current and Third Harmonic Resistive Leakage Current directly with ambient temperature and line harmonic compensation KPM ER1 KPM ER1C is the Three phase Reference Standard Energy Meter specially used to calibrate single phase energy meter on-site . KPM AC HIPOT KPM Cable testing KPM VLF Hipot Tester KPM VLF HIGH VOLTAGE TESTER Hipot Tester KPM DC HIPOT KPM DC Hipot Test Set KPM TD 40 KPM 40kV Tan Delta measurement unit used for cable testing KPM VLF Series KPM VLF series with Tan Delta & PD Measurement Facility KPM Penta Pd pro Hand held Partial Discharge Tester with multichannel PD detection functions which can be integrated with multiple sensors like UHF , TEV, HFCT, AE , Contact Acoustic etc. KPM CEST 1800 KPM’s Clamp Earth & Spike Tester KPM CRT 6002G Contact Resistance Tester with single-end and double-end grounding test technology, It is available in 200A & 600A KPM Onload Tap Changer Analyzer Onload Tap Changer Analyzer is testing key parameters of an OLTC such as ,Transient time, Transition waveform, Transition resistance, Synchronization status of three phase. td12 Automatic 12KV Capacitance & Dissipation Factor Test Set with 4 Nos channels for Bushing testing in one test , Built In 10kV - 5mA Diagnostic Insulation Tester KPM APIK Automatic Primary Injection Kit is used for high voltage switch testing, protection system testing and current transformer testing in power system KPM CTA C+ CT Analyzer ( for factory & field applications ) KPM CT/PT Tester pro An automatic device used for testing of instrument transformers (CTs & PTs) by injection of secondary voltage. This is capable of ratio error , phase error , winding resistance, knee point upto 2kV etc. K3063i 6I & 4U - Automatic Relay Test Kit RTK(KPM KFA 300) The Lightest Relay Test Kit with 3 Current Sources & 4 voltage sources . Builtin software with AC Test , DC Test , Frequency Test , Distance Test , Harmonic Test Modules RTK(K316i) Automatic Relay Test Kit ( 6I,4U) KPM-DPM-01 KPM Dew Point Meter K68i Relay test kit 3I & 4U - Automatic Relay Test Kit RTK KPM KF 86P Automatic Relay Test Kit with 6 current and 6 voltages , with advanced software with RIO / XRIO Import function KPM CT/PT analyzer It tests all type of CT/PT as per IEC standards (deal tool for CT/PT Manufacturers & Utility Customers) KPM CT:PT Tester KPM CT PT Testing , Primary Current Method CT PT PRO KPM CT PT Tester , Voltage Ratio Method KPM CT/PT HVCTR High Voltage Current Transformer Ratio Tester measures Key CT parameters of upto 33KV system KPM CT/PT PIK For testing Current Transformer , Circuit Breakers etc. by injecting current in Primary side of CT. Moduler design for transporting easily KPM TD12 KPM 12kV Tan delta Tester / Dissipation Tester KPM TTR3 On-site measurement of DC resistance of transformer or motors (High Current Source of 20 A) KPM SFRA 01 Sweep Frequency Response Analysis Test Set (SFRA) for checking the core and winding integrity of a power transformer KPM TWRT Series On-site measurement of DC resistance of transformer (High Current Source of 20 A) KPM 5KP 5 KV Diagnostic Insulation Tester KPM 5KP+ IR Tester ( 5KV, 10KV, 15KV, 20KV) TPL-Trans Power Loss Tester KPM Transformer Power Loss Analyzer OLTC Analyzer KPM Online Tap Changer Tester KPM CB Analyzer KPM Circuit Breaker Analyzer KPM CBA 01 KPM Circuit Breaker Tester KPM CRT Contact Resistance Tester CBT-01 KPM Circuit Breaker Timer VILA KPM Vacuum Interrupter Life Analyzer KPM Oil BDV 100+ KPM Oil Breakdown Voltage Test Kit KPM Oil BDV 100 A+ KPM Oil Breakdown Voltage Test Kit with variable rate of rise voltage KPM OT-01 CC KPM Flash Point Tester Close Cup KPM OT-01 OC KPM Flash Point Tester Open cup KPM OT 02 KPM Karl Fischer Tester , Moisture in oil tester KPM OT O3 KPM Viscosity Tester KPM OT-05 KPM Oil Acid Value Tester KPM OT01 KPM Oil Tan Delta Furan Tester KPM FT-01 KPM HPLC , Furan Tester KPM IPT 01 KPM Imputiry Particle Tester KPM PCM 01 KPM Petroleum Colorimeter KPM ODT 01 KPM Oil Density Tester KPM Interfacial Tension Meter KPM Interfacial Tension Meter KPM-OPPT-01 KPM Oil Pour Point Tester KPM PDTI Monitor KPM Online Partial Discharge Monitor with Temperature & Sht. Ckt Current for HV Cable terminations KPM PDM-01 KPM Partial Discharge Monitor KPM Duo PD KPM online Partial Discharge Tester with acoustic and TEV sensors KPM PD Pulse-8 KPM Online PD Tester for PD Monitoring of switchgears and Ring Main Units KPM PDA-01 KPM Partial Discharge Analyzer , electrical method KPM Penta PD KPM Hand Held partial discharge Tester with TEV , HFCT, AE , Contact Acoustic, UHF sensors KPM CORONA POINTER KPM PD Pointer for laboratory corona finding KPM PQA+ KPM Power Quality Analyzer and recorder KPM - PQ Analyzer Light KPM Power Quality Analyzer and recorder KPM LA 100 + , LA TESTER KPM LA Tester / Surge arrester Tester / MOA Tester / 3rd harmonic leakage current tester kpm la 103+ KPM LA Tester / Surge arrester Tester / MOA Tester / 3rd harmonic leakage current tester KPM MT 3000 D 3-Phase energy meter tester KPM SF6 DPM Light KPM SF6 Dew Point Meter KPM CTTC KPM CT Heat Run Test Device KPM CEST KPM Clamp Earth Spike Tester KPM CET 1200 KPM Clamp Earth Tester KPM ET30K KPM Earth Tester with Spikes KPM GERM KPM Online Grid Earth Resistance Monitor KPM CM-0524 KPM Cell Voltage Monitor for Li Ion Batteries KPM battery load bank KPM DC Load Bank , KPM Battery Discharge Kit , KPM Constant Current DC load banks