Electronic trip device comprising communication means

Details Electronic trip device comprising communication means Electronic trip device comprising communication means

1992-09-15

1994-12-13

Hoff, Marc S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 94, 361 64, H02J 900

Patent

active

053734122

ABSTRACT:
The communication circuit of the self-powered trip device is disabled by the trip device microprocessor when the values of the measured currents are lower than preset values. The microprocessor sends a bit, called the power saving bit, before disabling the communication circuit so as to inform a monitoring device connected to the trip device of the cause of the interruption of transmission from the trip device.

REFERENCES:
patent: 4535409 (1985-08-01), Jindrick
patent: 5162664 (1992-11-01), Haun

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