Ground fault circuit interrupter

Details Ground fault circuit interrupter Ground fault circuit interrupter

1992-01-16

1994-12-06

DeBoer, Todd

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

361 45, H02H 316

Patent

active

053716469

ABSTRACT:
A fault current circuit breaker has a summary current transformer whose secondary coil is connected to a voltage-independent energy storage circuit. A monostable or bistable transformer relay is actuated by an impulse by way of this energy storage circuit when a fault current flows to earth in the protected installation. When the relay contact is made, an electromagnetic lock trigger is actuated by the energizing current received from the mains supply, which triggers the switch lock of the FC switch. After this, the bistable transformer relay is returned to its initial position, either mechanically by way of an appropriate coupling with the switch lock, or electrically by way of a time delay or switch circuit, whereby the relay contact opens and the FC switch is again ready for switching on. With the monostable transformer relay, the relay returns to its initial position automatically, whereby the energy storage circuit is adjusted to the coil of the relay such that the duration of the impulse delivered by the energy storage circuit is sufficiently long for the lock trigger to be actuated by the energizing current from the mains supply.

REFERENCES:
patent: 4347540 (1982-08-01), Gary et al.
patent: 4428021 (1984-01-01), Chen et al.
patent: 5019935 (1991-05-01), Nakamura

Affiliated with

Also associated with

Rating

Ground fault circuit interrupter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ground fault circuit interrupter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ground fault circuit interrupter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-218873