Unverified85% confidenceDecision RuleTime unknown
选购精度等级时看铭牌标注：居民计费用1级表(误差±1%)足够，商业分项计量或需精细监测能耗建议选0.5S级(误差±0.5%)
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85%
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Long-term
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Unverified计量精度选1级（误差±1%）足够家用，工业分表或商铺分租计费需选0.5级（误差±0.5%）以减少累计误差纠纷88% 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86% 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85% similarUnverified计量精度选1.0级即可满足家用（误差±1%），0.5S级用于工商业结算或需要精细分时统计的场景，家用买0.5S级属于性能浪费84% similarUnverified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83% similar
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