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电能计量装置不安装在产权分界处时，线路与变压器损耗的有功电量均由产权所有者负担
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在负载对称的三相电路中，无论是星形还是三角形连接，当线电压U和线电流I及功率因数已知时，电路的有功功率P＝3UIcosφ
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变压器的低压负荷电流测量应将钳型电流表转换开关旋转至电流量程
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变压器联结组标号(联结组别)不同时，才可以并联运行
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变压器台安装尺寸必须符合图纸要求，横担等铁件应平整，螺丝应紧固，穿入方向正确，丝扣露出螺帽3～5扣，不得过长或过短
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控制电缆的选用(型号、规格)及配置符合规范规定，其敷设途径应在二次设备正常运行条件下能进行维护工作
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按抄见功率(kW)数计算最大需量时，可直接按每小时抄见功率(kW)数计算最大需量
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若穿过每匝线圈的磁通量相同，则该线圈的磁链与其匝数N成反比，与穿过的磁通量成正比
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视在功率就是电路中电压有效值U和电流有效值I以及功率因素的乘积
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减少降压变压器二次绕组的匝数，可提高二次侧的输出电压
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金具组装配合应良好，安装前应进行外观检查
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全站停电时，应先拉开电容器组断路器后，再拉开各路出线断路器
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电压互感器和电流互感器的工作原理与电力变压器工作原理基本相同
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开启式负荷刀开关的熔丝只有在过负荷时熔断，而短路故障时不熔断
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用电检查现场发现：某客户私自将电能表的封印拆除，将A相电流进出线反接，其行为是窃电
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在电路计算时，先假定电流参考方向，计算结果为正说明电流实际方向与参考方向相同；反之，计算结果为负说明实际方向与参考方向相反
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用一个恒定电动势E和一个内阻Ro串联组合来表示一个电源，用这种方式表示的电源称为电压源
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--Will you please give the note to him? _________.
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B. No, please not
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