Interruption ability of a self extinguishing type gas circuit breaker

Interruption ability of a self-extinguishing-type gas circuit breaker has been investigated while varying several structural factors. With a thermal puffer cylinder (0.7 l volume), excellent interruption ability (9.5 to 31.5 kA at 84 kV) was obtained for the condition of a breaker-terminal fault (BT...

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Bibliographic Details
Published in:IEEE transactions on power delivery 1990-07, Vol.5 (3), p.1362-1369
Main Authors: Arita, H., Natsui, K., Tsukushi, M., Kurosawa, Y., Hirasawa, K.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit breakers
Circuit faults
Circuit testing
Connection and protection apparatus
Critical current
Electrical engineering. Electrical power engineering
Exact sciences and technology
Hydraulic actuators
Interrupters
Power generation economics
Power system reliability
Springs
Voltage
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Summary:Interruption ability of a self-extinguishing-type gas circuit breaker has been investigated while varying several structural factors. With a thermal puffer cylinder (0.7 l volume), excellent interruption ability (9.5 to 31.5 kA at 84 kV) was obtained for the condition of a breaker-terminal fault (BTF). In the condition of a short-line fault (SLF), however, its interruptible arcing time width at the same current levels was only 0.2 to 0.3 cycles, where 0.5 cycles was proposed. The critical current, which is the minimum current which the breaker can interrupt, was several kiloamperes.< >
ISSN:0885-8977
1937-4208
DOI:10.1109/61.57978