National Grid conducted a polarity check during the commissioning of a substation. The equipment used for the test is the OMICRON COMPANO 100. Providing utility professionals with critical information ...
Is is easy to test the polarity of a circuit’s point whether it is positive or negative by using the tester circuit featured here. The tester circuit has a high input impedance (around 1 megaohms) to ...
Most test setups need only positive voltages to power the device under test (DUT). Some devices require negative voltages as well. Test voltages aren’t always fixed, though. Their value and/or ...
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