Ultra-high-tension circuit-breaker
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United States of America Patent
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Apr 19, 1994
Grant Date -
N/A
app pub date -
Sep 30, 1992
filing date -
Oct 2, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to an ultra-high-tension interrupting chamber comprising a main chamber including an insulating case containing permanent contacts, arcing contacts and two closing resistors inserted by means of semi-moving 'make switch' device putting a 'first' one of the resistors into operation before the 'second' resistor. An auxiliary chamber is connected in parallel with the main chamber, which auxiliary chamber includes an insulating casing containing an opening varistor associated with a break switch having a slow-release opening mechanism situated inside the casing.
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