System and method for arc detection in dynamoelectric machines

Details System and method for arc detection in dynamoelectric machines System and method for arc detection in dynamoelectric machines

1986-12-29

1988-09-13

Leung, Philip H.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Motor protective condition responsive circuits

361 23, 361 6, 324546, H02H 700

Patent

active

047713550

ABSTRACT:
System and method of detecting arcing faults in dynamoelectric machines by monitoring the voltage on the neutral grounding lead to detect RF voltages produced by arcing in the machine. The voltage is monitored by an RF voltage coupler and an RF monitor having a high impedance input amplifier. In one embodiment, the voltage coupler is clamped onto the neutral lead, and in another it is connected electrically in series with it.

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