TS 840 TRANSFER SWITCH
PM057 REV 8 10/01/25 28 Thomson Technology
determined. The grounding points of the system shall be verified to determine that ground
paths do not exist that would bypass the sensors. The use of high-voltage testers and
resistance bridges may be required. A simulated fault current is to be generated by a coil
around the sensors. The reaction of the circuit-interrupting device is to be observed for
correct response. The results of the test are to be recorded on the test form provided.
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