Safety mechanism for electrical power line

Details Safety mechanism for electrical power line Safety mechanism for electrical power line

1985-07-30

1987-05-05

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Feeder protection in distribution networks

361 79, H02H 722

Patent

active

046636919

ABSTRACT:
A safety mechanism is described which is used in an electrical distributing system with a bus-bar and of branches emanating from the bus-bar and has safety relays which turn off the malfunctioning part of the system in case of error. In this safety mechanism, redundancy is increased with respect to a malfunctioning of any one of the relays while the number of safety relays remains the same. This is achieved by the fact that each of the safety relays responds to a measurement of currents and voltages of two branches and acts upon both branches via the switches separating them from the mains.

REFERENCES:
patent: 3963964 (1976-06-01), Mustaphi
patent: 4432031 (1984-02-01), Premerlani

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