When there are more than two electric water pumps, their power supply should use electricity from different mother line of the power system.
当有两台以上电动给水泵时，给水泵的电源应从厂用电系统不同的母线段取得。
The line loss, which is one of the important indexes of the power-supply system, possesses direct influence on enterprise's economic benefit, operation level and all other electric power indexes.
线损是供电系统的重要指标之一，它直接关系到企业的经济效益、经营管理水平及其他各项电能质量的高低。
To guarantee electric power system running safely, make it quickly resume power supply to the line and equipment being power cut.
为保证电力系统的安全可靠运行，使之对已停电的线路或设备快速自动恢复供电。
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