GB/T 32580.1-2016 in English

《GB/T 32580.1-2016轨道交通 地面装置 交流开关设备的特殊要求 第1部分：Un大于1kV的单相断路器》由TC278（全国轨道交通电气设备与系统标准化技术委员会）归口，TC278SC3（全国轨道交通电气设备与系统标准化技术委员会牵引供电分会）执行，主管部门为国家铁路局。

Scope

This part of GB/T 32580 applies to single-phase AC circuit breakers for fixed indoor or outdoor installations, operating frequency 50 Hz, and nominal voltages of 25 kV, 2 × 25 kV and 50 kV electrified railways. The connection mode of double-pole circuit breakers applicable to this part is limited to: one pole is connected to the contact line on the line, the other pole is connected to the positive feeder, the positive feeder is erected along the same track, and the autotransformer is connected at a certain distance to improve the line. Voltage. The neutral point of the entire circuit is directly grounded. This section also applies to the operating mechanism of the circuit breaker and its auxiliary equipment. Circuit breakers relying solely on manual actuation of the closing mechanism are outside the scope of this standard.