Unverified85% confidenceDecision RuleTime unknown
必须选带劣化指示窗(红/绿状态窗)的产品:SPD是消耗品,压敏电阻多次泄流后会老化,无指示灯则无法判断是否已失效,等于失去保护而不自知。带遥信触点的可接入报警更佳
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85%
Confidence
Long-term
Relevance
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