较大的电动机直接通过断路器从母线获得电源。
The larger motors are powered directly from these buses through circuit breakers.
电动机过载保护通常采用继电器，而配电线路过载保护多采用断路器的长延时过电流脱扣器来完成。
Protection against motor over - load usually adopt thermal relay, but protection against line over - load usually adopt long delay over- current release of circuit- breaker.
断路器可以加装分励脱扣器、压脱扣器，辅助触头，报警触头和电动操作机构。
The Breaker can be attached with shunt tripping device, undervoltage tripping device, auxiliary contacts, alarm contacts and motor-operated drive.
介绍了低压断路器分别应用于配电线路、电动机和照明的选择方法，并就安装时应满足的具体要求作了阐述，提出了断路器在使用和维护过程中应注意的事。
The various selection methods of low voltage breaker when it was applied in distribution line, motor and lighting are introduced as well as the corresponding installation requirements.
鉴于旋转电机已具备较为成熟的控制方法，本文提出了基于永磁电动机控制的断路器操动机构方案。
Many mature control strategies being available for nowadays rotating motors, a permanent magnet motor based control scheme is put forward for possible operation mechanism of circuit breakers.
注：脱扣级别对应于电动机保护型断路器。
Note: Release rate corresponding to the circuit breakers with motor protection.
针对三相短路电流产生的电动力进行分析，经过受力分析，瞬间较高的电动力对户外柱上真空断路器的影响很大。
The three-phase short circuit currents of bulk electric power system are very high, and the high currents do harm to the working of the system.
本发明公开了一种用于电动机保护断路器的开关机构，所述开关机构能够减小调节手柄所需的力，并能够加强断开电路的可靠性。
Disclosed is a switching mechanism for a motor protection circuit breaker capable of reducing a force required to adjust a handle, and capable of enhancing the reliability to break a circuit.
利用场路综合分析的方法，来分析真空断路器产生的操作过电压对电动机的绝缘造成的影响和危害，具有一定的现实意义。
It's useful to analyze the effect and damage to the large motor insulation by the VCB switching over-voltage based on the circuit-field analysis method.
一种新型断路器操动机构，是由主轴、扭力弹簧、转盘、蜗轮、蜗杆、电动机和支架等构成。
The utility model relates to an operating mechanism for a breaker, which is composed of a main shaft, a torsion spring, a rotating disk, a worm wheel, a worm screw, a motor and a supporter.
一种新型断路器操动机构，是由主轴、扭力弹簧、转盘、蜗轮、蜗杆、电动机和支架等构成。
The utility model relates to an operating mechanism for a breaker, which is composed of a main shaft, a torsion spring, a rotating disk, a worm wheel, a worm screw, a motor and a supporter.
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