Introduction; Designated Use - Omicron Lab CT Analyzer User Manual

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Introduction

1.1

Designated Use

The CT Analyzer is intended to perform automatic testing and calibration of low
leakage flux current transformers (i.e., CTs with non-gapped cores) in
laboratories as well as on-site in utilities. Testing of CTs with gapped cores is
also possible with restricted accuracy. The following tests can be performed
using the CT Analyzer:
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Using the Quick Test feature it is also possible to use the CT Analyzer as a
versatile multimeter with included power source, e.g. for:
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The CT Analyzer is intended exclusively for the applications described above.
Any other use is deemed not to be according to the regulations. The
manufacturer and the distributor are not liable for damage resulting from
improper usage. The user alone assumes all responsibility and risk.
Burden measurement
Residual magnetism measurement of CTs
CT winding resistance measurement
CT excitation characteristic measurement according to IEC 61869-2,
IEC 60044-1, IEC 60044-6 (TPS, TPX, TPY, TPZ) and IEEE C57.13.
CT ratio measurement with consideration of a connected burden
CT phase and polarity measurement
Determination of accuracy limiting factor, instrument security factor,
secondary time constant, symmetrical short-circuit current factor, transient
dimensioning factor, remanence factor, knee point voltage/current, class,
saturated inductance and non-saturated inductance.
Quick and easy resistance measurement, e.g. for wiring checks on the
secondary side of CTs.
Quick voltage ratio checks for VTs.
Measurement of burden values, e.g. to determine the new burden value after
changes of the relay equipment. This allows the re-calculation of the CT test
results for the new burden value by the CT Analyzer and thus makes it
unnecessary to run an additional CT test in order to determine the behavior
of the CT with the new burden.
Quick wiring checks using the CPOL polarity checker from OMICRON. Using
the CPOL in combination with the specific test signal provided by the
CT Analyzer's Quick Test feature you can check a series of test points (e.g.,
the burden wiring) for correct polarity.
Introduction
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