Reserve d.c. power device

Details Reserve d.c. power device Reserve d.c. power device

1999-01-22

2000-08-01

Sherry, Michael J.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 939, 361104, 361272, H01G 200

Patent

active

060975849

ABSTRACT:
The disclosure relates to the securing of a reserve d.c. power device containing a battery of parallel-connected electrolytic capacitors. A reserve d.c. power device is provided with current limitation means series-connected at its input and current cut-off means that are series-connected with each capacitor and that open for a current intensity value higher than the value of intensity of the nominal current for charging the protected capacitor that is imposed by the distribution, between the capacitors, of the current with intensity limited by the means of limiting current delivered by the d.c. source each time that the system is started up. Precautions are thus taken against power supply losses due to the short-circuiting of a capacitor. At the same time, it is seen to it that the state of the capacitors of the power reserve device is constantly monitored.

REFERENCES:
patent: 4703195 (1987-10-01), Bailey
patent: 5073751 (1991-12-01), Kaitandjian et al.
Patent Abstracts of Japan, vol. 18, No. 595 (E-1630), Nov. 14, 1994, and JP 06 225447 A, Aug. 12, 1994.
Derwent Abstracts, Accession No. 89-269282, SU 1 465 930 A, Mar. 15, 1989.

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