Material Sampling Test Systems

Automatic Instrument Transformer (CT/PT) Test System

Integrated sampling-test system for current and voltage transformers up to 35 kV, with automatic ranging, ratio and polarity verification, excitation characteristics and burden tests.

Automatic Instrument Transformer (CT/PT) Test System
Standards
IEC 61869 · GB/T 20840
Applications
CT/PT sampling inspection · Metering verification · Utility warehouse

Overview

Integrated sampling-test system for current and voltage transformers up to 35 kV, with automatic ranging, ratio and polarity verification, excitation characteristics and burden tests.

Applicable Standards

  • IEC 61869
  • GB/T 20840

Application Scenarios

CT/PT sampling inspectionMetering verificationUtility warehouse

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Frequently Asked Questions

What tests are performed on current and voltage transformers?
The system performs ratio verification, polarity check, excitation characteristic (knee-point) measurement and burden tests. Automatic ranging removes the manual range selection step between different transformer ratings.
Which standard applies to instrument transformer testing?
Instrument transformer testing follows IEC 61869 and GB/T 20840. The accuracy class verification limits are set by the class of the transformer under test.
Is this a portable CT analyzer or a fixed test bench?
This is a fixed sampling-test station designed for batch inspection in a utility warehouse or quality inspection centre, not a portable field analyzer.

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