CT & PT Testing 

Video

Theory

CT/PT Analyzer 

KPM-CT/PT Analyzer is an all in one solution for testing all type of CT/PT as per IEC standards. It is an equipment with high ROI ( Return On Investment ) . Below features  make  KPM CT/PT analyzer  and ideal tool for  CT/PT Manufacturer , Testing labs , Substations (Upto 765KV) , Power Plants  etc.

Features

  1. Low Testing Time             (Completes all  test for CT/PT                                                     Winding & Cores in few min)

  2. Simple connection           (Simple one time connection)

  3. Highest  Accuracy             (0.05% for turns  ratio & winding  resistance )

  4. Portable & Light Weight  ( < 15KG )

  5. High Interference Rejection  (Can be used in 220/400/765 KV  Live Switchyards )

HVCTR ( HV CT Ratio Tester)

Online HV CT Ratio Tester (KPM-HVCTR) – High Voltage Current Transformer Ratio Tester 

As the name suggests Online HV CT Ratio Tester (KPM-HVCTR) is an innovative  product to measure Key  line / CT parameters of  upto  33KV system .

Online HV CT Ratio Tester (KPM-HVCTR) is used for the determination of:

  • Primary & Secondary Current Measurement

  • Current Transformation Ratio

  • Phase Sequence

  • Polarity

CT/PT Tester

KPM-CT/PT Tester is an automatic device used for testing of        instrument transformers by injection of primary current .

 CT/PT Tester is capable of conducting below tests on both CTs & PTs 

1) Turns Ratio 

2) Excitation Curve Plotting 

3) Polarity 

Technical Specifications -: 

  • Easy to operation. KPM- CT/PT Tester automatically completes the test and avoid user from any exposure to HV. 

  • Maximum output voltage of 1000V for excitation characteristic test . Maximum voltage can be increased upto 2000V with external booster .  

  • Maximum output current of transformation ratio test is 600A which can be raised upto 2000A with external current booster.

Primary Current Injection Kit

This substation testing device is designed to grant high current output when needed in substation commissioning activities. KPM PIK Series of equipment is having below features-: 

  • High current output up to 8000 A

  • Powerful output up to 35 kVA

  • Customised Design.

  • Designed for primary injection testing of protection relays and circuit breakers, for commissioning and revamping of substations and electrical network

  • Modular design for easy transport

  • Heat run.

Video - CT/PT Analyzer

 

Theory - CT/PT Testing

 

CT (Current Transformer) – Theory

Like any other transformer, a current transformer has a primary winding, a magnetic core, and a secondary winding. The alternating current flowing in the primary produces an alternating magnetic field in the core, which then induces an alternating current in the secondary winding circuit. An essential objective of current transformer design is to ensure that the primary and secondary circuits are efficiently coupled, so that the secondary current bears an accurate relationship to the primary current.

 

 

PT (Potential Transformer) – Theory

A Voltage Transformer theory or Potential Transformer theory is just like theory of general purpose step down transformer. Primary of this transformer is connected across the phases or and ground depending upon the requirement. Just like the transformer, used for stepping down purpose, potential transformer i.e. PT has lower turns winding at its secondary. The system voltage is applied across the terminals of primary winding of that transformer, and then proportionate secondary voltage appears across the secondary terminals of the PT.

CT/PT Testing

Below is the list of Major tests conducted on CT & PT

  • Insulation Resistance Test

  • Polarity Test

  • Secondary/Loop Resistance Test

  • Burden Test (optional test)

  • Magnetization Curve Test (optional test)

  • Hysteresis Curve Test

  • Turns Ratio Test (optional test)

  • Primary Injection Test

  • High Voltage Test

APPLICATIONS 

PRODUCTS

KPM TD12       K3063i        K68i        K3163i        CT PT ANALYZER       CT PT TESTER       CB ANALYZER       CBT 01       CBA-01       TTR      TWRT SERIES      OBD-100A+      OBD-100+      LA100+      CRT SERIES       CET1200      CORONA-POINTER       PENTA-PD DETECTOR        PIK-SERIES       SF6 GAS ANALYZER (KS30)          SF6 GAS DEW POINT METER-DPM01       DPM-LIGHT      MT3000D       MT3000B        EMR1        EMR1C        PQ LIGHT        ET30K            HVCTR         FLASH POINT TESTER (KPM OT 01)        

 KARL FISCHER ( KPM OT 02)         VISCOSITY TESTER (KPM OT O3)        OIL TAN DELTA ( KPM OTD 01 )          ACID VALUE TESTER ( KPM OT 05 )        BA01 BATTERY ANALYZER      BATTERY LOAD BANKS        BATTERY DATA LOGGERS( BDL)        BATTERY MONITORING SYSTEMS( BMS )     HIPOTS ( AC / DC /VLF / AC-DC )        INSULATION TESTER ( 5KP )           INSULATION TESTER (5KP+ SERIES)     NEO GATEWAY                     

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