阀式避雷器的保护比等于避雷器的残压与灭弧电压之比。保护比越大,表明残压低或灭弧电压高,意味着绝缘上受到的过电压小,而工频续流又能很快被切断,因而该避雷器的保护性能越好。()
发布时间:2026-01-24
A.正确
B.错误
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