Unverified78% confidenceFactTime unknown
过压保护动作阈值通常设定在265V-275V，欠压保护约170V-185V，市电波动大的农村或工业区应选可调阈值且带自动恢复功能的型号，避免电压瞬变频繁跳闸
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78%
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Long-term
Relevance
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Unverified过压保护阈值建议设260-275V，欠压阈值设180-190V；阈值设太窄（如过压250V）在夏季用电高峰或电网波动时会频繁断电误动作86% similarUnverified普通住宅终端回路漏电保护器应选额定漏电动作电流30mA、动作时间≤0.1s的快速型，这是防止人身触电的安全阈值；超过30mA无法保证人身安全79% similarUnverified山区、农村、工业区末端等电压波动大的场景，需选输入范围140V-260V的宽幅稳压器；城市市电稳定场景180V-250V的常规款即可满足77% similarUnverified随车充需支持宽电压输入（180V-260V），农村或老旧小区电压波动大时低于180V会触发保护停充，选宽压机型可避免充不进电74% similar
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