Common Electrical Tests on Instrument Transformers
Our test systems let you carry out several standard tests quickly:
- magnetization characteristic
- saturation behavior (ALF/FS)
- transformation ratio and its accuracy
- polarity
- load
- winding resistance
- withstand voltage or remanence
The results give you a good overview of your instrument transformers’ (ITs’) condition to determine further necessary measures.
Former accuracy class 0.1 tests of ITs required a complex on-site test, or sometimes a complete disassembly and transport to a test laboratory. However, you can perfectly use OMICRON’s powerful and compact test solutions for field tests. With their high accuracy, they can also be used partially for the calibration of ITs during metering.
Expert recommends
CT Analyzer
CT Analyzer: Current transformer (CT) analysis with the push of a button
Firmware Packages
CT Analyzer can be ordered with different firmware packages:
Basic
Measures ratio, composite error, excitation and knee point, winding resistance
Standard:
Measures and assesses CTs with accuray classes ≥ 0.3 according to IEC and IEEE standards
Advanced:
Expands standard package to accuracy classes ≥ 0.1 and additional assessment standards
IEEE Protection:
Measures protection CTs according to IEEE C57.13 (does not support metering CTs)
Benefits of this solution

Complete Solution

The CT Analyzer approach

Assessment of CT Performance

High accuracy and light weight
Videos
CT Analyzer – the number one in current transformer testing
Efficient current transformer testing with OMICRON CT Analyzer
Methods for current transformer testing
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