High tension circuit breaker capable of interrupting fault curre

Details High tension circuit breaker capable of interrupting fault curre High tension circuit breaker capable of interrupting fault curre

1994-10-11

1996-04-23

Scott, J. R.

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Air-current blowout

218 44, 218 58, 218 59, 218 84, H01H 3370, H01H 3388

Patent

active

055105912

ABSTRACT:
The invention relates to a high tension circuit breaker capable of interrupting alternating fault currents which have a pseudo period T. The faults occur at an instant t.sub.0 and delay the zero crossing of the current after a maximum time lapse of t.sub.zmax -t.sub.0. The circuit breaker includes a plurality of interrupting chambers in series. These chambers open at an instant t.sub.1 which is subsequent to the fault instant t.sub.0 and include moving equipment and an arc blaster. The arc blaster operates between instant t.sub.1 and instant t.sub.c, where instant t.sub.c is earlier than the instant t.sub.zmax -T. The circuit breaker also includes a feature which causes blasting to be extended to an instant t.sub.2 lying in the range t.sub.zmax -T and t.sub.zmax +T.

REFERENCES:
patent: 3659065 (1972-04-01), Roidt et al.
patent: 4159498 (1979-06-01), Noeske
patent: 4228333 (1980-10-01), Kii
patent: 5066839 (1991-11-01), Maineult et al.
patent: 5373131 (1994-12-01), Perret et al.

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