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KPM Is having a complete range of Li Ion Cell, Module & Pack testing equipment . These equipment are being used by world leading companies at highest level of reliability . EV Battery Service Center Testing Solutions Zelltest & Ausgleich Klick jetzt Hochleistungswartung Klick jetzt HV-Entladungsprüfung Klick jetzt Modul / Pack Ausgleich Klick jetzt Anchor 1 Zellentest und Ausgleich KPM BCD B-4X BCD SERIES KPM BCD B4X integrates discharge, charging and activation functions into one unit with features of multi-channel, independent cell, and large current. View More KPM BCD 0530 BCD SERIES KPM BCD 0530 can quickly and accurately maintain the cells with large voltage drops in the lithium battery module. View More KPM BCD 0550 BCD SERIES KPM BCD 0550 Series is the latest cell discharge-charge device developed by KPM , which adopts advanced battery testing technology and combines the charging and discharging characteristics of lead-acid batteries and lithium-ion batteries. View More Anchor 2 Zellentest und Ausgleich KPM LI80L Luftdichtheitstester Air Leakage Tester für Batteriepacks Mehr sehen KPM LI80L Luftdichtheitstester Air Leakage Tester für Batteriepacks Mehr sehen KPM LI80L Luftdichtheitstester Air Leakage Tester für Batteriepacks Mehr sehen KPM LI80L Luftdichtheitstester Air Leakage Tester für Batteriepacks Mehr sehen Anchor 3 Zähler und andere KPM CCDB SERIES CCDB SOLUTION CCDB Series Lithium Battery Equalization Tester is developed to solve cell voltage imbalance quickly. View More CM-0524 CCDB SLOUTIONS CM - 05224 can quickly test cells voltage in the lithium battery module and judge the balance of the entire battery pack. View More KPM CCDB + Series CCDB SLOUTIONS Suitable for daily charge, discharge, and equalization maintenance of lithium-ion battery cells, module cells, and pack cells. View More KPM CCDB 5V 15A CCDB SLOUTIONS CCDB 5V 15A Lithium Battery Equalization Tester can quickly perform charge, discharge, and equalization tests on individual cells in lithium battery packs. View More Anchor 4 AIR LEAKAGE SOLUTIONS KPM-24BV Li-Zellen-Spannungsmesser AL-80L Battery Leakage Tester is the latest high-accuracy nondestructive testing equipment developed by KPM. KPM-24BV Li-Zellen-Spannungsmesser AL-80H is the latest high-accuracy nondestructive testing equipment developed by KPM, with the highest sensitivity and stability in the new energy industry. Häufig gestellte Fragen (FAQ) FAQ about Battery Testing & EV Systems : 01 How to Test a Li-ion Battery Pack Safely and Efficiently ? Testing a Li-ion battery pack requires a balance of safety, accuracy, and efficiency. Key steps include: Visual Inspection: Check for swelling, leakage, or damaged terminals. Voltage Check: Measure open-circuit voltage to ensure cells are within the safe range. Insulation Resistance Test: Verify electrical isolation between terminals and the battery casing. Capacity & Discharge Testing: Simulate real-world loads to assess actual capacity, energy output, and discharge efficiency. Impedance/IR Testing: Identify aging cells or weak connections. Thermal Monitoring: Monitor temperature rise during charging/discharging to detect potential overheating. Safety tips include using proper PPE, short-circuit protection, and ventilated areas to avoid thermal events. KPM's Battery Pack Tester is designed for safe and efficient testing of EV and industrial Li-ion packs. It offers automated test sequences, multi-channel voltage/current monitoring, and integrated thermal protection. The tester's real-time data logging and analysis software help ensure accurate diagnostics, preventive maintenance, and safer battery operation. 02 What are the Top 5 Mistakes to Avoid While Discharging Lithium-Ion Cells ? Discharging lithium-ion cells must be done with precision to avoid safety risks and performance degradation. Here are the top 5 mistakes to avoid: 1. Over-Discharging Below Safe Voltage Limits: Going below 2.5–3.0V can cause irreversible damage or capacity loss. 2. High Current Discharge Without Monitoring: Excessive current leads to overheating, thermal runaway, or cell swelling. Always follow rated discharge current. 3. Ignoring Cell Balancing: Uneven discharge across cells in a pack can reduce lifespan or cause imbalance-related failures. 4. Lack of Temperature Monitoring: Not monitoring temperature during discharge can hide thermal issues that lead to fires or failure. 5. Discharging Without Load Control or Cut-Off Logic: Manual discharge setups without auto cut-off risk cell damage or safety hazards. KPM’s Battery Tester prevents these issues through programmable discharge profiles, auto cut-off, real-time voltage/current/temperature monitoring, and cell balancing diagnostics. It ensures safe, accurate discharge testing for EVs, storage systems, and R&D applications. 03 Why Cell Balancing is Critical in Battery Pack Design? Cell balancing is essential in lithium-ion battery pack design to ensure uniform voltage levels across all cells, which directly impacts performance, safety, and lifespan. Without balancing, even a single weak or overcharged cell can cause: Reduced usable capacity Premature degradation or failure Overheating or thermal runaway False full/empty readings during charging/discharging There are two types: 1. Passive balancing dissipates extra energy as heat and 2. Active balancing redistributes charge to weaker cells, improving efficiency KPM’s Battery Solution features integrated smart cell balancing technology. It continuously monitors each cell’s voltage and automatically adjusts charge levels to maintain uniformity. Whether in EVs, solar storage, or industrial packs, KPM’s system ensures balanced charging/discharging, enhanced cycle life, and optimal safety. The real-time monitoring interface also provides visual alerts on imbalance conditions—enabling proactive maintenance and higher reliability. 04 How AH Curve Tracers Improve Battery Quality Analysis? Ampere-Hour (AH) Curve Tracers or constant current discharge testers are critical tools for evaluating battery quality. By discharging the battery at a fixed current and recording voltage over time, they generate AH curves that reveal: 1. Actual capacity vs. rated capacity 2. Voltage stability during load 3. Internal resistance and aging behavior 4. Cut-off voltage performance 5. Cell degradation patterns over cycles This data helps manufacturers and maintenance teams identify underperforming cells, confirm batch consistency, and detect early signs of capacity fade—essential for EVs, energy storage, and critical backup systems. KPM’s Constant Current Battery Testing Equipment is designed for precise AH curve analysis. It offers programmable discharge rates, real-time voltage monitoring, and auto cut-off features. With multi-channel support and detailed data logging, it enables accurate grading, performance benchmarking, and lifecycle testing—ensuring battery packs meet safety and performance standards before deployment. 05 What do you mean by Preventing Battery Fires also what are the Role of Air Leakage Testers ? Battery fires often originate from internal short circuits, moisture ingress, or poor sealing during manufacturing. Air leakage testers play a critical role in preventing such incidents by verifying the airtightness of battery cells, modules, and packs. These testers use pressure decay, vacuum decay, or mass flow methods to detect even the smallest leaks. Ensuring proper sealing prevents oxygen or humidity from entering the cell enclosure, which can lead to electrolyte degradation, corrosion, or thermal runaway in lithium-ion batteries. Regular air leakage testing helps: Maintain IP-rated enclosures for harsh environments Detect seal defects before cell assembly Ensure consistency in automated production lines Comply with safety standards like UN38.3 and IEC 62133 KPM offers high-sensitivity air leakage testers tailored for EV and energy storage applications. With fast cycle times, digital pressure control, and data traceability, KPM’s solution enhances quality assurance and plays a vital role in fire prevention and safe battery operation. 06 What is EV Battery Diagnostics ? What are the Tools Every Service Center Must Have? As electric vehicles (EVs) grow rapidly, service centers must be equipped with specialized battery diagnostic tools to ensure safe and effective maintenance. Key tools include: Battery Pack Testers – For measuring voltage, current, capacity, and SOH (State of Health) during charge/discharge cycles. Cell Balancing Analyzers – To detect and correct imbalances between individual cells in the pack. Insulation Resistance Testers – Essential for checking insulation integrity to prevent leakage currents and electrical hazards. Thermal Imaging Devices – For identifying overheating cells or poor thermal management. Communication Interface Tools – To read battery management system (BMS) data via CAN or other protocols. Air Leakage Testers – To ensure sealed packs meet safety standards. KPM provides an integrated suite of EV battery testing equipment, including constant current testers, smart BMS diagnostic tools, cell balancers, and leakage testers. Designed for workshop and field use, KPM’s devices offer fast, accurate, and automated diagnostics, helping service centers improve safety, reduce downtime, and extend battery life. 07 Do you know Charging vs. Discharging Tests: Key Differences Explained, Advantages of each test? Charging and discharging tests are both essential for evaluating battery performance, but they serve different purposes and reveal different insights. Both tests are complementary—charging tests help optimize input energy handling, while discharging tests validate output performance. Together, they provide a comprehensive view of battery health and reliability Key Differences Feature : Charging Test Discharging Test Purpose : Assess charging efficiency & behavior Measure capacity, energy output, Stability Data Collected : Charge time, input current, voltage rise Discharge time, voltage drop, delivered AH Risks : Overcharging, thermal buildup Deep discharge, undervoltage stress Monitoring Focus : Temperature rise, end-of-charge detection Voltage sag, current stability, thermal trend Control : CC/CV (Constant Current/Voltage) Constant Current or Constant Power load Advantages of Charging Test Evaluates charging curve behavior and efficiency Helps in BMS calibration and charger compatibility Detects issues like overvoltage cutoff failure or high IR during charge Monitors thermal response during charging cycles Advantages of Discharging Test Measures real usable capacity of the battery Identifies aging or weak cells through voltage sag Simulates real-world usage conditions Critical for state of health (SOH) estimation and performance grading KPM’s battery testers support both charging and discharging modes with programmable current profiles, real-time monitoring, and data logging, enabling accurate, automated, and safe battery diagnostics across EVs, energy storage, and R&D applications. 08 What is Understanding State of Health (SOH) in Li-ion Batteries? State of Health (SOH) is a key parameter that reflects the overall condition and performance capability of a lithium-ion battery compared to its original, factory-new state. Expressed as a percentage, SOH = 100% means the battery performs at full capacity; lower values indicate degradation. Factors Affecting SOH: Capacity Fade: Reduction in charge-holding ability over cycles. Increased Internal Resistance: Leads to voltage drop and heating. Cycle Life: Number of full charge-discharge cycles completed. Temperature Stress: Accelerates degradation if outside ideal range. Charge/Discharge Rates: High currents can strain cell chemistry. How SoH is Measured: Capacity Test: Compares actual vs. rated capacity (e.g., via constant current discharge). Impedance/Resistance Test: Higher internal resistance suggests aging. Voltage Behavior Analysis: Under load, abnormal voltage drops signal poor SOH. Algorithmic Estimation: Used in BMS for real-time SOH prediction based on usage history. KPM’s battery testing equipment measures SOH using precision discharge testing, impedance analysis, and real-time voltage tracking. Its smart software computes SoH accurately, helping users assess battery viability, schedule replacements, and extend system reliability in EVs and energy storage applications. 09 Do you know Battery Test Protocols According to IEC/UN38.3 Standards ? Battery safety and performance testing follow strict protocols defined by IEC standards (e.g., IEC 62133, IEC 62660) and UN38.3, which governs the safe transport of lithium batteries. These protocols ensure batteries can withstand mechanical, electrical, and environmental stress. Key UN38.3 tests include: Altitude simulation Thermal cycling Vibration and shock resistance External short circuit Overcharge and forced discharge Impact/crush test IEC standards add protocols for electrical performance, insulation resistance, and endurance cycling. Each test is designed to validate battery integrity, prevent fire or explosion risks, and ensure global compliance for transport and use. KPM’s battery testing systems are built to comply with these standards, offering programmable test sequences, automated data logging, and safety cutoffs. This enables manufacturers and labs to efficiently validate battery packs for EVs, consumer electronics, and storage systems before certification and deployment. 10 How to Extend EV Battery Life Through Better Testing? Extending the life of an EV battery begins with smart, proactive testing practices throughout the battery’s lifecycle—from development to daily use. Key strategies include: Accurate SoH & Capacity Testing: Regularly monitor State of Health (SoH) and capacity using controlled charge/discharge cycles to detect early degradation and prevent overuse of weak cells. Cell Balancing Verification: Use testers to identify and correct imbalances, ensuring even load distribution and avoiding stress on individual cells. Thermal Profiling: Monitor temperature behavior under load to detect hotspots or cooling issues that accelerate aging. Internal Resistance Checks: Periodic impedance testing identifies cells with rising resistance—a sign of aging or failure. Simulated Real-World Load Testing: Evaluate performance under actual driving conditions to optimize BMS tuning and charging protocols. KPM’s battery testing solutions support all of the above, offering automated diagnostics, real-time analytics, and precision control. This helps EV manufacturers and service centers maximize battery life, reduce failures, and enhance long-term performance. 11 Do you know the Evolution of Battery Testing Equipment in the EV Era? With the rise of electric vehicles (EVs), battery testing equipment has evolved from basic voltage and capacity checkers to smart, multifunctional diagnostic platforms. Early systems focused on simple charge/discharge cycles, but modern EV batteries demand high-precision testing for complex parameters like State of Health (SoH), internal resistance, cell balancing, and thermal behavior. Today’s equipment supports high-voltage, multi-channel testing, fast data logging, and automated test protocols aligned with IEC and UN38.3 standards. Integration with Battery Management Systems (BMS), cloud connectivity, and AI-driven analytics are now standard, enabling predictive maintenance and lifecycle optimization. KPM’s battery testing solutions reflect this evolution by offering advanced tools for real-time monitoring, constant current testing, leakage detection, and cell balancing verification. Built for R&D, manufacturing, and service centers, KPM's systems ensure safety, accuracy, and performance—essential in the fast-paced EV ecosystem. 12 Why Your Battery Test Bench Might Be Giving False Results? False results from a battery test bench can arise due to calibration errors, inaccurate sensor placement, or improper test conditions. If the voltage or current sensors are not calibrated regularly, readings may drift, leading to incorrect capacity or SoH measurements. Poor contact resistance at terminals or cables can also distort current flow and voltage drop data. Environmental factors like temperature fluctuations or electromagnetic interference can affect sensitive measurements, especially during internal resistance or impedance tests. Additionally, incorrect test profiles—such as setting the wrong cut-off voltage or charge rate—can lead to misleading performance data. Software issues, such as outdated firmware or poor algorithm tuning, may misinterpret real-time data or fail to filter noise properly. KPM’s battery test benches mitigate these issues with auto-calibration, real-time error detection, and intelligent profiling. They ensure accurate, repeatable results that reflect the true performance and safety status of EV and energy storage batteries. 13 What are the Role of Environmental Factors in Battery Pack Testing? Environmental factors play a crucial role in battery pack testing, as they significantly influence battery performance, safety, and lifespan. Temperature, humidity, and altitude conditions can alter a battery’s behavior under both charge and discharge cycles. Temperature affects chemical reactions inside cells. High temperatures accelerate degradation and risk thermal runaway, while low temperatures reduce capacity and increase internal resistance. Humidity can lead to moisture ingress, causing corrosion or insulation breakdown—especially in poorly sealed packs. Altitude (low pressure) impacts thermal dissipation and can increase the risk of electrolyte leakage or expansion in sealed packs. To ensure reliability, batteries are tested in environmental chambers simulating real-world extremes. IEC and UN38.3 standards mandate such conditions for certification. KPM’s battery testing systems integrate seamlessly with environmental chambers, enabling precise control, real-time monitoring, and automated safety checks—ensuring comprehensive evaluation of battery packs under varied environmental stresses. 14 What is Li-ion Cell Grading: How to Do It Right? Li-ion cell grading is the process of evaluating and categorizing cells based on their performance parameters to ensure uniformity in battery pack assembly. Doing it right involves a systematic and precise testing protocol: Key Steps in Proper Cell Grading: Initial Voltage & IR Check: Measure open-circuit voltage and internal resistance to identify defective or aged cells. Capacity Testing (Constant Current Discharge):Discharge cells under a controlled current and record actual capacity (Ah) against rated values. Cycle Performance Evaluation: Charge/discharge cycles help verify stability and consistency across multiple uses. Temperature Monitoring: Track thermal response under load—abnormal heating indicates inefficiency or cell faults. Sorting Criteria: Classify cells based on capacity, IR, voltage behavior, and thermal stability into A, B, C grades. KPM’s cell grading systems offer multi-channel, high-precision testers with automated sorting, real-time data logging, and user-defined grading profiles. This ensures consistent cell performance, longer pack life, and optimal safety for EV and energy storage applications. 15 Difference between Battery Testing for Aerospace and Automotive Applications? Battery testing for aerospace and automotive applications differs significantly due to varying performance, safety, and environmental requirements. Aerospace batteries demand extreme reliability, lightweight design, and operation under harsh conditions like high altitude, vibration, and temperature extremes. Testing includes rigorous altitude simulation, thermal vacuum, and shock/vibration endurance to meet standards like RTCA DO-311 and MIL-STD. In contrast, automotive EV batteries focus on cycle life, thermal management, and high-power performance. Tests involve real-world drive simulation, fast charging analysis, thermal profiling, and compliance with UN38.3, IEC 62660, and ISO 26262. KPM’s testing solutions cater to both sectors with customizable test protocols, environmental chamber integration, and real-time monitoring. For aerospace, KPM offers high-precision, lightweight diagnostics; for automotive, it provides high-throughput, high-current testing systems—ensuring safety, efficiency, and regulatory compliance across industries. 16 End-of-Life Testing for Electric Vehicle Batteries? End-of-life (EOL) testing for electric vehicle (EV) batteries is essential to assess whether a battery can be reused, repurposed, or must be recycled. This testing focuses on determining the State of Health (SoH), remaining capacity, internal resistance, and thermal behavior after prolonged use. Key EOL testing steps include: Capacity Test: Measures actual ampere-hours (Ah) to determine if it meets minimum reuse thresholds (typically ≥70% of original). Impedance Measurement: Identifies internal degradation and cell imbalance. Charge/Discharge Cycle Analysis: Evaluates efficiency and detects abnormal voltage drops or thermal spikes. Thermal Performance Check: Assesses safety risks under load. Leakage and Insulation Tests: Ensures physical and electrical integrity. KPM’s battery EOL testing systems automate these processes with real-time monitoring, trend analysis, and safe discharge protocols. This enables accurate decision-making for second-life applications, such as stationary storage, or safe recycling, aligning with circular economy goals. 17 What do you mean by Understanding the Thermal Runaway Effect? End-of-life (EOL) testing for EV batteries is crucial to determine whether a battery should be reused, repurposed, or recycled. This involves evaluating the battery’s State of Health (SoH), residual capacity, internal resistance, and thermal behavior. Typically, a battery is considered at end-of-life when its usable capacity drops below 70–80% of its original rating. EOL testing includes controlled charge/discharge cycles, impedance analysis, and thermal profiling under simulated real-world loads. It also verifies the integrity of the Battery Management System (BMS) and checks for cell imbalance, swelling, or leakage. This testing helps classify batteries for secondary applications like energy storage or ensures safe recycling of critical materials. KPM’s battery testing systems provide automated, accurate EOL assessment with programmable protocols, multi-parameter monitoring, and safety interlocks, enabling OEMs and recyclers to make informed decisions about battery reuse, life extension, or disposal. 18 Difference between Battery Energy Density and Safety: A Testing Perspective? As energy density increases in lithium-ion batteries to meet the demands of EVs, aerospace, and portable electronics, safety risks also rise. Higher energy density means more power is stored in the same space, which can lead to thermal runaway, fire, or explosions if not properly managed. From a testing perspective, it is critical to balance performance with safety through: Thermal abuse tests to simulate overheating Overcharge/overdischarge tests to detect BMS failure scenarios Short-circuit and impact testing to assess mechanical protection Internal resistance and SoH testing to identify degradation risks early Leakage and enclosure integrity tests to prevent moisture or gas ingress Testing protocols per UN38.3, IEC 62133, and UL 2580 ensure that high-energy cells meet strict safety thresholds. KPM’s battery testing solutions are designed to test both high-capacity and high-safety requirements, providing real-time monitoring, automated safety shutdowns, and environmental stress simulations to ensure safe, high-density battery deployment. 19 What Makes a Good Battery Service Center? A good battery service center combines technical expertise, advanced diagnostic tools, and safety-first practices to ensure efficient and reliable battery maintenance. Key qualities include: Skilled Technicians trained in EV, industrial, and energy storage battery systems. Advanced Testing Equipment for SoH analysis, cell balancing, IR testing, and BMS diagnostics. Safety Protocols including insulation resistance checks, thermal monitoring, and ESD protection. Data-Driven Diagnostics using software tools for real-time monitoring and historical performance tracking. Proper Infrastructure, such as ventilated workspaces, fire suppression systems, and isolation zones for damaged packs. Support for Multiple Battery Chemistries and pack configurations.

KPM India |We are electrical test equipment manufacturers, We deal in CT PT Analyzer, Relay Test Kit , Tan delta , Transformer Test Kits , LA Testers etc.|PD - Projects |https://kpmtek.wixsite.com/website/de/pd-projects Teilentladungsprojekte Generating Sets at QEC, Vietnam PD & VW Test System for Surge Arrester at Siemens, China 15kVA/120kV PD & VW Test for Instrument Transformer at Xishang Electric 10kVA-120kV VW test for Electric Components at Hangzhou Yunuo Technology Shielding Room of PD and VW test for Switch Cabinet at Pinggao Electric Group Power Transfomer Comprehensive Tests for Power Transformer at Ningbo Gerace Electric 5kVA/150kV Digital PD test for 35kV Switch Cabinet at China Energy Engineering Group Partial Discharge Equipment for 35kV Dry type Power Transformer at Dongmeng Electric Partial Discharge Shielding Room for Power Transformer PD test at Dongfang Electronics Co., Ltd. 50kVA/50kV Power Frequency Voltage WIthstanding Test for Various Electrical Equipment at Shanghai El 150kV Partial Discharge & Voltage Withstanding Test for Switch Cabinet at ABB, China

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 India |We are electrical test equipment manufacturers, We deal in CT PT Analyzer, Relay Test Kit , Tan delta , Transformer Test Kits , LA Testers etc.|High Current Unit |https://kpmtek.wixsite.com/website/de/highcurrentunit Hochstromeinheit

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 Videogalerie Photos Videos Anchor 1 Videogalerie ! Videogalerie 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 Battery Load Bank 00:27 Video abspielen Wird abgespielt CTA Demo 24 00:30 Video abspielen Wird abgespielt KPM CBA Dispatch 00:22 Video abspielen Anchor 2

KPM India |We are electrical test equipment manufacturers, We deal in CT PT Analyzer, Relay Test Kit , Tan delta , Transformer Test Kits , LA Testers etc.|PD Detector (Analog) |https://kpmtek.wixsite.com/website/de/pd-detector-analog PD-Detektor (analog)

KPM Solutions|We are electrical Test Equipment supplier |https://www.kpmtek.com/test-equipment |  Relay Test Kits  CT/PT Analyzers  LA Testers  TTR , Transformer Turns Ratio  TWRT (Transformer Winding Resistance Tester)  Tan delta  Partial Discharge Testing ( Portable )  etc 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

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 is one of the fastest growing electrical equipment providers with extensive products which serves testing solutions and monitoring of assets. Our Solutions consist of CT PT Analyzers, Relay Test Kits, Tan Delta, LA Testers, Circuit Breaker Analyzer, COntact Resistance Testers, Oil BDV Etc. EIN PUNKT-LÖSUNGSANBIETER FÜR ALLE ELEKTRISCHEN PRÜFANWENDUNGEN Cable LA Meter TRF Relay Machine Battery Testing GIS Circuit Breaker Tap Charger Monitor Testing EV Partial discharge CT/PT Earth Testing ÜBER UNS LAB TESTED , FIELD PROVEN SOLUTIONS Videos Pictures Bei KPM beschäftigen wir uns mit dezentraler Fertigung, Montage und Beratung von elektrischen Prüf- und Messgeräten. KPM bietet eine Reihe von Hightech-Geräten, die für die meisten typischen Anwendungen zum Testen von Stromversorgungssystemen verwendet werden. Unsere Testlösungen wurden speziell unter Berücksichtigung der Anforderungen von Energieversorgungsunternehmen für Verteilung, Übertragung und Erzeugung entwickelt. Bei KPM haben Sie nicht nur die Gewissheit, das beste Prüfgerät zu bekommen, sondern erhalten auch einen Einblick, welches Gerät tatsächlich für Sie geeignet ist. Da wir ein unvoreingenommener Anbieter von Prüfgeräten sind, berücksichtigen wir alle Vorteile, bevor wir unseren geschätzten Kunden ein bestimmtes Produkt empfehlen. Seit 1992 ist KPM Engineering Solutions ein führendes Unternehmen in der Elektroberatung und hat erfolgreich Dutzende von Projekten durchgeführt, die auf die Bereitstellung innovativer technischer Lösungen abzielen. Ab 2018 hat sich KPM Umstrukturierungen und Übernahmen unterzogen, um sich in das Geschäft der Prüf- und Messgeräteindustrie zu diversifizieren . Bei Bedarf bietet unsere T&M-Abteilung und Beratungsabteilung Mehrwertdienste wie Ergebnisinterpretation und Ursachenanalyse für DUT-Ausfälle (device under test) an. Wir arbeiten mit weltweit führenden Forschungs- und Entwicklungsunternehmen auf der ganzen Welt zusammen, um unseren geschätzten Kunden die besten und zuverlässigsten Lösungen vor die Haustür zu bringen. Jede von KPM bereitgestellte Lösung wird von einem Team aus Experten für Anwendungs- und Serviceunterstützung unterstützt. Bevor sie unsere Kunden erreichen, durchläuft jede Lösung unsere präzisen Laborstandards und strengen Feldversuche unter EHV-Schaltanlagenbedingungen (bis zu 765 kV). Wir sind eine Gruppe von Technokraten mit umfassender Verkaufs- und Anwendungserfahrung sowohl in der Hochspannungs- als auch in der Niederspannungs-Elektro-T & M-Industrie. Als genetisches Beratungsunternehmen für Elektrotechnik bieten wir Design- und Fehlerbehebungsdienste für unseren geschätzten_cc781905 -5cde-3194-bb3b-136bad5cf58d_ Kunden in den letzten 2,5 Jahrzehnten. Wir bei KPM sind bestrebt, unseren Kunden präzise Geräte für die richtige T&M-Anwendung bereitzustellen und fungieren dann als erste Anlaufstelle für jeden Support im Zusammenhang mit dem Produkt. Internationale Kunden USA.png bangladesch.png 640px-Flag_of_Tansania.svg.png MAYAMAR TSCHECHIEN CHILE NIGERIA NEPAL Kenya Saudi Arabia Indonesia Kundenreferenzen To play, press and hold the enter key. To stop, release the enter key. Referenzen Kürzlich aufgegebener Auftrag für KPM CT PT Analyzer zum Testen von CT PTs in 400 kV Live-Schaltanlagen . Eine führende Central Gov. EPC, India Kürzlich in Auftrag gegebenes automatisches Relais-Testkit, K3063i , Online-Schulung und Anwendungsunterstützung wurden vom KPM Team bereitgestellt Ein führendes Stahlunternehmen , Nigeria KPM K3063i bestellt, mit Online-Support von KPM Engineering Ein führender EPC, Chile Kürzlich ein Paket von KPM Tan Delta Kit, CT PT Analyzer, LA Tester, PQ Analyzer, Battery Testing Kit usw._cc781905-5cde-3194-bb3b-58d5cf_bad in Auftrag gegeben Ein führendes multinationales Unternehmen für die Instandhaltung von Kraftwerken. , India In Betrieb genommen KPM CT PT Analysator zum Testen von CT & PTs in Wasserkraftwerken Eine führende Central Gov. Hydro Power Co., India

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 capacitive voltage divider is used for HV measurement in Partial Discharge Testing and High Voltage Testing| KPM's Capacitive Voltage Dividers are rugged , accurate and of high quality . |https://www.kpmtek.com/capacitive-voltage-divider Kapazitiver Spannungsteiler (nicht PD)

Circuit Breaker Analyzer cover all testing items of high voltage circuit breakers. (KPM-CBA) has the following unique advantages: Vibration Analysis for mechanical characteristics Distance & Speed Analysis CRM-100A DCRM-100A Low voltage pickup test on coils from 16V to 300 V LEISTUNGSSCHALTER-PRÜFSÄTZE Video Theorie Leistungsschalter-Analysator Mehr sehen Die Funktionen von Circuit Breaker Analyzer decken alle Prüfpunkte von Hochspannungs-Leistungsschaltern ab. Im Vergleich zum herkömmlichen Circuit Breaker Tester KPM Circuit Breaker Analyzer (KPM-CBA) hat die folgenden einzigartigen Vorteile: Vibrationsanalyse für mechanische Eigenschaften Entfernungs- und Geschwindigkeitsanalyse von sich bewegenden Kontakten Statische Kontaktwiderstandsmessung von 100A Dynamische Kontaktwiderstandsmessung von 100A Niederspannungsaufnahmetest an Spulen von 16V bis 300 V Kontaktwiderstandstester Mehr sehen Kontaktwiderstandstester (KPM CRT) gibt 600-A-Gleichströme aus, um den Kontaktwiderstand von Schutzschaltern oder Hochstromkabelkontakten zu testen. Es ist gemäß per IEC62271 ausgelegt. Es misst hauptsächlich den Kontaktwiderstand des Leistungsschalters. Alle test Ergebnisse des Testers können über den im des Testers integrierten Mikrodrucker ausgedruckt werden. Außerdem können alle im Tester gespeicherten Testergebnisse auf the computer hochgeladen und dann als MS WORD-Dokument gespeichert werden. Die KPM-CRT-Serie ist in folgenden Varianten erhältlich: 100A 200A 400A 600A KPM CBA-01 Mehr sehen KPM Leistungsschalteranalysator (KPM-CBA 01) wird zum Testen, Analysieren und Bewerten von Leistungsschaltern, mechanischen Eigenschaften von Lastschaltern und Trennschaltern und anderen AC-Hochspannungsschaltern, Lichtbogenkontakten und Vibrationseigenschaften usw. verwendet Prüfanforderungen an Hochspannungs-Leistungsschalter. Im Vergleich zum herkömmlichen Leistungsschaltertester hat der KPM Circuit Breaker Analyzer (KPM – CBA 01) die folgenden einzigartigen Vorteile: MERKMALE Das Leistungsschalter-Prüfgerät KPM CBA-01 wird zur Durchführung elektrischer und mechanischer Eigenschaften von Hochspannungs-, Mittelspannungs-Leistungsschaltern, -schaltern und -schützen verwendet. Messen Sie die Zeitparameter des Leistungsschalters (Schließen, Öffnen, Asynchron, Prellen) von 12 Hauptkontakten. Set mit 12 Kontaktzustandsanzeigelampen auf dem Bedienfeld. Es ist einfach, den geschlossenen und den offenen Zustand zu beurteilen. Messen Sie den Weg, den Nachlauf, den Rückprall, das Überschwingen und die Geschwindigkeit des Hammers mit einem Widerstandswandler oder einem digitalen Wandler. Verwenden Sie zur Winkelmessung einen digitalen Drehgeber. Schließen, Öffnen, OCO, OC, CO-Steuersequenzen ausführen. Testen Sie die mechanische Eigenschaft, die von CB manuell betrieben wird. Eingebauter DC-Steuerausgang, kann zum Testen der Aktionsspannung verwendet werden. Messen Sie die Motorstromkurve während des Motorantriebs, Spulenstrommessung Vacuum Interruptor Life Analyzer ( VILA )_cc781905-5cde-3194-bb3b- 136schlecht5cf58d_ Mehr sehen KPM-VILA (Vacuum Interrupter Life Analyzer) , das Testset der dritten Generation, das seine fortschrittliche Technologie zur Bestimmung des Zustands von Vakuumunterbrechern im Feld, in der Werkstatt oder im Labor nutzt. Wenn Sie nach einem aussagekräftigen Test für Vakuumunterbrecher suchen, werfen Sie einen Blick auf die herausragenden Fähigkeiten unseres neuen VILA (Vacuum Interrupter Life Analyzer) (auch bekannt als Vakuumflasche Tester), die im Feld, in der Werkstatt oder im Labor verwendet werden können. Unter Verwendung des Penning-Entladungsprinzips kann unser VILA (Vakuumunterbrechungs-Lebensanalysegerät) leicht identifiziert werden Der Druck in einer Vakuumschaltröhre Die nutzbare Lebensdauer der Vakuumschaltröhren Bisher konnte diese Art der Prüfung nur im Montagewerk durchgeführt werden. KPM CBT-01 (Breaker-Timer) Mehr sehen Merkmale : 1. Testen Sie die elektrischen Eigenschaften verschiedener Hochspannungs-Leistungsschalter. 2. Testen Sie die Parameter für Schließen, Öffnen, verschiedene Perioden und Prellzeit von 6 Kontakten. 3. Auf dem Bedienfeld befinden sich 6 Kontaktstatusanzeigen, anhand derer bequem beurteilt werden kann, ob der Schließ- oder Öffnungsstatus oder die Verdrahtung korrekt ist. 4. Führen Sie die Schließ-, Öffnungs-, Öffnungs- und Schließ-, Schließ-, Öffnungs- und Schließsteuerung durch. 5. Eingebautes, einstellbares Hochleistungs-DC-Netzteil mit manuellem Spannungseinstellknopf, Schließknopf, Öffnungsknopf, der schnell ein- und ausschalten und den Spannungstest auslösen kann. 6. Eingebauter Gleichstrom kann als Motorenergiespeicher verwendet werden. 7. Die Ausgangssteuerung verwendet elektronische Schalter mit hoher Steuergenauigkeit und langer Lebensdauer. KPM CBT-01 (Breaker-Timer) Mehr sehen Merkmale : 1. Testen Sie die elektrischen Eigenschaften verschiedener Hochspannungs-Leistungsschalter. 2. Testen Sie die Parameter für Schließen, Öffnen, verschiedene Perioden und Prellzeit von 6 Kontakten. 3. Auf dem Bedienfeld befinden sich 6 Kontaktstatusanzeigen, anhand derer bequem beurteilt werden kann, ob der Schließ- oder Öffnungsstatus oder die Verdrahtung korrekt ist. 4. Führen Sie die Schließ-, Öffnungs-, Öffnungs- und Schließ-, Schließ-, Öffnungs- und Schließsteuerung durch. 5. Eingebautes, einstellbares Hochleistungs-DC-Netzteil mit manuellem Spannungseinstellknopf, Schließknopf, Öffnungsknopf, der schnell ein- und ausschalten und den Spannungstest auslösen kann. 6. Eingebauter Gleichstrom kann als Motorenergiespeicher verwendet werden. 7. Die Ausgangssteuerung verwendet elektronische Schalter mit hoher Steuergenauigkeit und langer Lebensdauer. KPM CBT-01 (Breaker-Timer) Mehr sehen Merkmale : 1. Testen Sie die elektrischen Eigenschaften verschiedener Hochspannungs-Leistungsschalter. 2. Testen Sie die Parameter für Schließen, Öffnen, verschiedene Perioden und Prellzeit von 6 Kontakten. 3. Auf dem Bedienfeld befinden sich 6 Kontaktstatusanzeigen, anhand derer bequem beurteilt werden kann, ob der Schließ- oder Öffnungsstatus oder die Verdrahtung korrekt ist. 4. Führen Sie die Schließ-, Öffnungs-, Öffnungs- und Schließ-, Schließ-, Öffnungs- und Schließsteuerung durch. 5. Eingebautes, einstellbares Hochleistungs-DC-Netzteil mit manuellem Spannungseinstellknopf, Schließknopf, Öffnungsknopf, der schnell ein- und ausschalten und den Spannungstest auslösen kann. 6. Eingebauter Gleichstrom kann als Motorenergiespeicher verwendet werden. 7. Die Ausgangssteuerung verwendet elektronische Schalter mit hoher Steuergenauigkeit und langer Lebensdauer. Vergleich - Circuit Breaker Testers Theorie - Leistungsschalterprüfung Theory CB Testing Ein Leistungsschalter ist ein automatisch betriebener elektrischer Schalter, der einen Stromkreis vor Schäden durch Überlastung oder Kurzschluss schützen soll. Seine grundlegende Funktion besteht darin, einen Fehlerzustand zu erkennen und den Stromfluss zu unterbrechen. Der Leistungsschalter erhält während Fehlerzuständen einen „Trip“-Befehl von den jeweiligen Relais. Die folgenden Parameter werden häufig an einem Leistungsschalter getestet. Allgemeine Prüfungen an Leistungsschaltern Schließzeit & Öffnungszeiten Bewegungstests (wie in IEC 1208 empfohlen) Dämpfung Spulenströme Auslösespannung Statischer Kontaktwiderstand der Hauptkontakte Neue Methoden zur Diagnose von Leistungsschaltern Dynamischer Kontaktwiderstand Vibrationsprüfung. Form der Spulenstromkurve Integrität der Vakuumflasche Kapazität & Tan Delta des Grading-Kondensators Taupunktmessung von SF6-Gas/Luft Gemessene Werte werden mit vom Hersteller vorgegebenen Grenzwerten oder Erfahrungswerten des Instandhaltungsbetriebes verglichen. In vielen Fällen wird ein „Fingerabdruck“ erstellt, der aus verschiedenen Messungen besteht, die bei einem neuen Schalter durchgeführt werden. Dieser Fingerabdruck kann dann als Referenz für nachfolgende Messungen verwendet werden. Jede festgestellte Änderung weist eindeutig auf eine Änderung des Zustands des Unterbrechers hin. Theorie - Leistungsschalterprüfung Circuit Breaker Test Kits : 01 Why Timing Tests on Circuit Breakers Matters ? During a circuit breaker timing test, the opening and closing times of main and auxiliary contacts are measured to assess the breaker's mechanical and electrical performance. The test simulates real fault or operation conditions, records response times (e.g., O, C, O-C-O), and analyzes contact synchronization, bounce, and trip coil current. These measurements reveal issues like slow operation, wear, or misalignment. Advantages include early fault detection, improved safety, reduced downtime, and compliance with IEC/ANSI standards. KPM offers precise timing test equipment with advanced diagnostics, helping utilities and industries maintain system reliability and extend breaker life through data-driven maintenance planning. 02 What means measuring contact resistance in Circuit Breakers ? A contact resistance test measures the electrical resistance across closed contacts of a circuit breaker. Low resistance ensures efficient current flow with minimal losses or overheating. High resistance can indicate pitting, corrosion, or poor contact pressure. This test helps detect internal issues not visible externally. It’s essential for preventing energy losses, overheating, and eventual failure during load or fault conditions. Regular testing ensures optimal breaker performance, safety, and longevity. KPM offers contact resistance test equipment with high accuracy and data logging, enabling predictive maintenance, faster troubleshooting, and compliance with IEC/IEEE standards across substations and industrial power systems. 03 What is the use of both side ground feature in contact resistance meter ? The both-side ground feature in a contact resistance meter allows the tester to connect the instrument’s ground reference on both ends of the circuit breaker contacts simultaneously. For Example:- - Eliminate interference and noise caused by stray currents or electromagnetic fields. - Improve measurement accuracy by ensuring a stable, low-resistance ground path. - Prevent false readings that may occur if only one side is grounded. - It increases the safety of the operation. - KPM’s contact resistance meter CRT 200 G use this feature to deliver precise, repeatable readings critical for assessing contact health and ensuring reliable breaker operation. 04 Why is understanding Coil Current Analysis in Breaker Testing important ? Coil current analysis involves measuring the current drawn by the trip and close coils during circuit breaker operation. This current signature helps diagnose the breaker’s mechanical and electrical health. Changes in current shape, peak value, or duration can reveal issues like sluggish movement, coil burnout, weak springs, or mechanical obstructions. Analyzing the coil current curve provides early warnings of potential failure before timing or contact issues become visible. It enhances predictive maintenance and helps avoid costly downtime. KPM’s test systems capture detailed coil current waveforms, enabling precise diagnostics, improved reliability, and safe operation of critical power systems. 05 How to do Dynamic Contact Travel Analysis ? Dynamic contact travel analysis measures the real-time movement of a circuit breaker’s main contacts during operation using motion sensors or transducers. It captures parameters like stroke, velocity, overtravel, rebound, and contact wipe. This test reveals mechanical wear, misalignment, or sluggish movement that timing tests alone can miss. It ensures the breaker’s mechanical integrity, proper contact engagement, and smooth operation under stress. KPM’s breaker analyzers support dynamic travel analysis with high-resolution sensors and software that visualizes motion curves. This allows for accurate diagnostics, preventive maintenance, and verification that breakers meet design and safety standards. 06 What is Vacuum Interrupter Testing ?What is its Life Cycle and Failure Modes? Vacuum interrupters (VIs) are critical components in medium-voltage circuit breakers, responsible for arc extinction. Though sealed for life, their performance can degrade over time. Life Cycle: VIs have a defined mechanical and electrical life—typically 10,000+ operations or a set number of fault interruptions. Factors like switching frequency, fault levels, and contact wear influence lifespan. Failure Modes: Loss of vacuum (leakage) Contact erosion or misalignment Internal flashover or dielectric breakdown Testing: KPM offers vacuum interrupter testers to check vacuum integrity using high-voltage AC/DC or magnetron-based methods, ensuring reliability, safety, and timely replacement decisions. 07 Why you Shouldn’t Ignore Pre-Insertion Resistor Testing ? Pre-insertion resistors (PIRs) reduce inrush currents during circuit breaker closing, protecting equipment from voltage transients and mechanical stress. Ignoring PIR testing can lead to undetected resistor failure, delayed insertion, or complete bypass—compromising system stability. Regular PIR testing verifies correct resistor engagement, timing, and resistance values. It ensures effective damping of switching surges, especially in capacitor bank or transformer applications. KPM’s breaker analyzers can assess PIR timing and resistance performance with precision, helping prevent equipment damage, extend asset life, and maintain reliable power system operation. Skipping this test risks hidden failures and costly breakdowns. 08 Differences Between Testing SF6, Vacuum, and Oil CBs ? Here’s a concise comparison of testing SF6, Vacuum, and Oil Circuit Breakers (CBs): SF6 CBs: Tests focus on gas pressure, density, and leakage, plus timing, contact resistance, and gas quality analysis. SF6 ensures excellent arc quenching. Vacuum CBs: Emphasis on vacuum integrity testing, contact resistance, timing, and coil current analysis. Vacuum interrupters have a sealed, long-life design. Oil CBs: Requires insulation and oil quality tests, contact resistance, timing, and sometimes oil dielectric strength checks. Oil acts as arc quenching and insulation medium. KPM offers specialized test equipment tailored for each CB type, ensuring accurate diagnostics, maintenance, and safety compliance. 09 Difference between Circuit Breaker Analyzer and Manual Timer – Pros & Cons? Circuit Breaker Analyzer Pros: High accuracy and repeatability Measures multiple parameters (timing, coil current, contact resistance) Data logging and analysis software Detects subtle faults and trends Faster and safer testing Cons: Higher initial cost Requires some training to operate Manual Timer Pros: Low cost and simple to use Portable and no power needed Cons: Limited accuracy and precision Measures only basic open/close timing No data recording or advanced diagnostics Prone to human error KPM provides advanced analyzers that save time, improve safety, and offer detailed diagnostics for better maintenance decisions. 10 How Temperature and Environment Affect CB Test Results ? Temperature Effects: Cold temperatures can stiffen mechanical parts, causing slower operations and longer timing. High temperatures may reduce coil resistance, affecting current measurements. Extreme temps can alter contact resistance readings due to material expansion or contraction. Environmental Factors: Humidity can cause corrosion or moisture ingress, affecting insulation and contacts. Dust and contaminants can interfere with mechanical movement or electrical contacts. Vibrations or electromagnetic interference may distort sensitive measurements.