Repair lower voltage equipments and power transmission includes tank farm pumps, main workshop and fire fighting water pump. Regular test motor and distribution cabinet insulation.
维修低压设备和给低压设备停送电，包括罐区的泵、主车间泵和消防泵泵。定期测试电机和配电柜的绝缘。
Based on the analysis of main fault types of LV (Low Voltage) flameproof motor, the negative sequence protection principle is proposed for its asymmetric short circuit fault and open phase fault.
通过分析低压隔爆电动机的主要故障类型，针对不对称性短路故障和断相故障提出了采用负序保护原理进行保护的方案。
Voltage sags due to line faults, transformer energizing and induction motor starting are main interference sources.
输配电线路故障、变压器投运、感应电动机启动是引起电压凹陷的主要原因。
ZX17 series stainless steel resistor is applied to AC 50hz, 1140v and DC voltage 1000v circuit, main of starting, braking and controlling motor. The rated power is 5.6kw.
ZX17系列不锈钢电阻器适用于交流50HZ电压至1140v及直流电压至1000v的电路，主要作为电动机起动、制动与调速用，额定功率为5.6 KW。
The main flux of asynchronous motor varies with the power voltage and the para-meter of excited inductance becomes a variable.
电源电压变化时，异步电动机主磁通随之变化，与之相应的激磁电感参数将是一个变数。
During actual operation of electric motor, the electric current is generally variable by the changes of the load and the main voltage, so, the electric motor equilibrium temperature is also variable.
电动机实际运行时，电流一般是随负载和电网电压的改变而变化的，因此，电动机稳定温度也是变化的。
During actual operation of electric motor, the electric current is generally variable by the changes of the load and the main voltage, so, the electric motor equilibrium temperature is also variable.
电动机实际运行时，电流一般是随负载和电网电压的改变而变化的，因此，电动机稳定温度也是变化的。
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