CT & PT TESTING KITS 

FAQ

Video

Theory

CT/PT Analyzer 

KPM CT PT Analyzer.png

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)

KPM HVCTR.png

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 Pro 

KPM CT PT Pro

KPM-CT/PT Pro is an automatic device used for testing of        instrument transformers by voltage ratio method .

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

1) Turns Ratio ( Ratio Error and Phase Errors ) 

2) Excitation Curve Plotting 

3) Winding Resistance 

4) CT Secondary Burden 

3) Polarity 

Technical Specifications -: 

  • Highest ROI  with never before value proposition . 

  • Easy to operation. KPM- CT PT Pror automatically completes the test and generates report . 

  • Maximum output voltage of 2000V for excitation characteristic test . ​

Primary Current Injection Kit

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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.

Comparison - CT PT Analyzer & CT PT Pro 

KPM CT PT Testers

Video - CT/PT Analyzer

 

Theory - CT/PT Testing

 

Frequently Asked Questions ( FAQ )  

 
KPM CT_PT Analyzer ,  Generator Busduct

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