冲击可由用户投切负荷产生，也可由电力部门投切操作(电容器，断路器等等)引起。
Surges can be generated by customers through the switching of their own loads, or they may be caused by utility switching operations (capacitors, breakers, etc.).
配套相应的真空负荷开关可用于电力、金、山、工等部门的配电系统作控制和保护、别适合投切恶性负载和需频繁操作的场所。
Mating corresponding vacuum load switch is for electric power, metallurgy, mine, chemical controlling and protecting, it is suitable for location that has bad load and frequent operation.
系统负荷投切和电容器充电的仿真结果表明，该方法能快速有效地区分暂态脉冲和振荡暂态。
The simulations of load switching and capacitor charging show that the proposed method can quickly and effectively class the impulse transient and oscillation transient disturbances.
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