Testing of Closed Links

The ICT 2.3 three-phase Isolation Current Transformer is used on multi position test benches, when three-phase meters with closed links between the current and voltage measuring circuits (I-P links) are to be tested.

For the testing of multiple single-phase meters with fixed links between the voltage and current path on a test bench galvanic isolation must be provided at each test position. This can be done with isolation transformers for the voltage path or the current path at each position.

With ever increasing frequency, meter manufacturers and meter operators are producing and using meters that do not allow the links between the current and voltage measuring circuits ( I-P links) to be opened for test or calibration purposes.

With ever increasing frequency, meter manufacturers and meter operators are producing and using meters that do not allow the links between the current and voltage measuring circuits ( I-P links) to be opened for test or calibration purposes.