Central office protector module with alarm indicator

Details Central office protector module with alarm indicator Central office protector module with alarm indicator

1988-06-03

1989-10-24

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361124, 340650, 337 32, H02H 904

Patent

active

048766267

ABSTRACT:
A central office protector module which includes a light to provide a visual indication whenever the module shorts either of the lines protected by the module to groud as a result of either a sustained overcurrent or overvoltage condition on either line. The module includes a sixth or alarm pin in addition to the two line pins, two equipment pins and one ground pin usually included in the module. The module also includes two internal alarm terminals which are each associated with a respective one of the lines. The light is connected to those terminals and a source of voltage. The alarm terminals are connected to ground to complete the circuit to the light when the associated line is connected to ground within the module.

REFERENCES:
patent: 3587021 (1971-06-01), Baumbach
patent: 3794947 (1974-02-01), Baumbach
patent: 4091435 (1978-05-01), Ahuja
patent: 4168515 (1979-09-01), Baumbach
patent: 4335416 (1982-06-01), Hollfelder et al.
patent: 4502088 (1985-02-01), Baumbach
patent: 4737776 (1988-04-01), Wireman
Reliable Electric/Utility Products, Reliance Comm/Tec Corporation-Catalog pp. A-300 and A-301 entitled "Connector Description" dated 1/82.
Reliable Electric/Utility Products, Reliance Comm/Tec Corporation-Catalog pp. A-305 and A-306 entitled "Resettable Heat Coil Modules" dated 1/82.

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