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Why do I need to specify trip (DC signals) instead of just potential and current?

April 26, 2017dc potential signals specify trip

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Why do I need to specify trip (DC signals) instead of just potential and current?

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The Interface Test System has 3 basic types of modules: Trip, Potential and Current. In the test block each of these modules are physically the same but in the test plug they are each different. The trip modules in the test plug will have a longer pin length than both current and potential plug modules, so when the test plug is inserted the Trip circuits will be opened first. This ensures that the device is properly isolated and does not send out a false trip. We call this functionality the automatic operating sequence.