Digital circuit interrupter with keypad data entry and display

Details Digital circuit interrupter with keypad data entry and display Digital circuit interrupter with keypad data entry and display

1990-03-19

1991-02-05

Deboer, Todd E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 96, 340664, H02H 304

Patent

active

049910426

ABSTRACT:
A circuit breaker containing an electronic trip unit utilizes a digital keypad and display to enter and display the trip parameters. The trip parameters are determined by means of a setpoint value that is incremented by means of an algorithm whenever the trip parameters are changed.

REFERENCES:
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patent: 4672501 (1987-06-01), Bilac et al.
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patent: 4751605 (1988-06-01), Mertz et al.
patent: 4754247 (1988-06-01), Raymont et al.
patent: 4780787 (1988-10-01), Dano et al.
patent: 4814712 (1989-03-01), Burton et al.
patent: 4827369 (1989-05-01), Saletta et al.
patent: 4870531 (1989-09-01), Danek
patent: 4945443 (1990-07-01), DeBioski et al.

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