安装，更换和修复照明灯具和电气控制及配电设备，如开关，继电器和断路器面板。
Install, replace and repair lighting fixtures and electrical control and distribution equipment, such as switches, relays and circuit breaker panels.
真空断路器是电力系统中压领域的一种开关设备，它担负着控制和保护的双重任务。
The vacuum circuit breaker is a kind of switch equipment which is used in the middle-voltage field in the power system, which undertakes double tasks of controlling and protecting.
除了有一个主断路器，它作为一项长期的开关并没有任何控制。
There are no controls except a master circuit breaker, which serves as an on-off switch.
最后，以断路器开关控制为例，设计了控制信息从控制中心到间隔层ied的安全传输的流程。
Finally controlling the breaker is taken as an example, and the process for security transmission of the controlling information from control Center to IED in bay layer is designed.
介绍了C-GIS用真空断路器及三工位隔离开关的设计技术；运用微机技术开发了专用的三工位隔离开关控制器；
The vacuum circuit breaker and three-position disconnector are designed for C-GIS and special micro-computer controller for the three-position disconnector is developed.
电动机和控制电压应连接到一个公用网，从这里，当发生电流断路时，电力开关的触点被断开。
The motor- and control voltage is to be connected to a common network, where the sealing-in of the power contactor is cancelled in case of an interruption of circuit.
电动机和控制电压应连接到一个公用网，从这里，当发生电流断路时，电力开关的触点被断开。
The motor- and control voltage is to be connected to a common network, where the sealing-in of the power contactor is cancelled in case of an interruption of circuit.
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