Electronic circuit breaker trip function adjusting circuit

Details Electronic circuit breaker trip function adjusting circuit Electronic circuit breaker trip function adjusting circuit

1986-08-11

1987-12-01

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 93, H02H 700

Patent

active

047108444

ABSTRACT:
The overcurrent trip levels of an electronic circuit breaker are selected by means of a variable resistance ladder network comprising binary encoded switches. The binary encoded switches reduce the size and cost of the trip unit, rendering electronic trip facility to a wider range of industrial circuit breakers utilizing both analog as well as digital processing circuits.

REFERENCES:
patent: 4038695 (1977-07-01), DePuy
patent: 4115829 (1978-09-01), Howell
patent: 4442472 (1984-04-01), Pang et al.
patent: 4589052 (1986-05-01), Dougherty

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