[KongchangAI]
Unverified85% confidenceCautionTime unknown

配电箱级SPD必须配前置后备保护器(脱离器或专用熔断器/断路器):SPD劣化短路时若无脱离装置会引发起火。很多低价产品不含后备保护,需额外配gG熔断器或按厂家标注的最大后备断路器额定值加装

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85%
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Long-term
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