发明名称 |
SURGE VOLTAGE ARRESTER WITH FAIL-SAFE FEATURE |
摘要 |
A surge voltage arrester utilizes for surge protection a varistor of the zinc oxide type between a line terminal and a ground terminal. The varistor is of a type that has a resistance which decreases as increasing voltage is applied thereacross. With increasing temperature the leakage current through the varistor increases at a given voltage. At a critical temperature and voltage condition, the varistor is subject to a thermal runaway condition which would cause the varistor to fail expelling hot particles. To avoid this failure condition, a fail-safe mechanism is provided which connects the line terminal to the ground terminal by-passing the varistor when there is an overcurrent condition on the line that results in heating of the varistor. |
申请公布号 |
DE3063019(D1) |
申请公布日期 |
1983.06.16 |
申请号 |
DE19803063019 |
申请日期 |
1980.02.21 |
申请人 |
RELIANCE ELECTRIC COMPANY |
发明人 |
BAUMBACH, BERTRAM WILLIAM |
分类号 |
H01C7/12;H02H9/04;(IPC1-7):H02H7/00;H01H85/44 |
主分类号 |
H01C7/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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