ISA T 2000 - Resistance Tests; Microohmmeter

DOC. MIE11110 Rev. 5
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2 RESISTANCE TESTS
With this selection, the following screen is displayed.
2.1 MICROOHMMETER
When this test is selected, the following menu is displayed.
Purpose of the test is to measure at the uOhm level the resistance
of the circuit breaker contacts, or any resistance of interest. It is
intended that the burden is not inductive: for the measurement of
transformers windings, please refer to CT, VT or PT tests.
The test is performed applying an high DC current to the test
item. The test can be performed only taking advantage of the
optional module called High IDC module.
The module includes a circuit that measures the current
generated; the output of the circuit is a dc current, rated from 2