Unverified88% confidenceDecision RuleTime unknown
计量精度按等级划分，1级表误差±1%、0.5S级误差±0.5%，家庭分项计量选1级足够，需精确监测分时电价或光伏并网结算建议选0.5S级
1
Sources
88%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Unverified数据采集精度选1级（±1%）足够家用计费参考，若用于光伏发电结算或分时电价套利分析需选0.5级（±0.5%）计量精度91% similarUnverified测量精度等级看有功电能计量准确度，家用监测选1级（误差±1%）足够；若需用于分摊电费或商业结算，应选0.5级或符合IEC 62053认证的产品91% similarUnverified计量精度选1.0级即可满足家庭电费核算，误差≤±1%；若用于设备能耗测试对比或工业分析，需选0.5级（误差≤±0.5%）以上，否则功率差异被误差淹没90% similarUnverified计量精度选1级（误差±1%）足够家用与自用监测；0.5S级（±0.5%）仅在需要精确分时结算或大功率商业计费时才有意义，价格显著更高89% similarUnverified计量精度看等级：居民计费用1.0级（误差±1%）足够，工商业结算或分时电价核算建议0.5S级（±0.5%），需要功率因数/谐波分析的场景选0.2S级88% similar
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