1. Misoperation failure:

这种故障是高低压成套设备主要的故障，其原因可分为两类。一类是因操动机构及传动系统的机械故障造成，具体表现为机构卡涩，部件变形、位移或损坏，分合闸铁芯松动、卡涩，轴销松断，脱扣失灵等。另一类是因电气控制和辅助回路造成，表现为二次接线接触不良，端子松动，接线错误，分合闸线圈因机构卡涩或转换开关不良而烧损，辅助开关切换不灵，高低压电气成套设备以及操作电源、合闸接触器、微动开关等故障。

This fault is the main fault of high and low voltage complete sets of equipment, and its causes can be divided into two categories. One is caused by the mechanical failure of the operating mechanism and transmission system, which is specifically manifested in mechanism jamming, component deformation, displacement or damage, opening and closing iron core looseness and jamming, shaft pin looseness, tripping failure, etc. The other is caused by electrical control and auxiliary circuit, which is manifested in poor secondary wiring contact, loose terminal, wrong wiring, burning of opening and closing coil due to mechanism jamming or poor change-over switch, ineffective switching of auxiliary switch, high and low voltage complete electrical equipment, operating power supply, closing contactor, microswitch and other faults.

2、开断与关合故障：

2. Breaking and closing fault:

这类故障是由断路器本体造成的，对少油断路器而言，主要表现为喷油短路、灭弧室烧损、开断能力不足、关合时爆炸等。高低压电气成套设备对于真空断路器而言，高低压电气成套设备表现为灭弧室及波纹管漏气、真空度降低、切电容器组重燃、陶瓷管破裂等。

This kind of fault is caused by the circuit breaker itself. For the low oil circuit breaker, it is mainly manifested in short circuit of oil injection, burning loss of arc extinguishing chamber, insufficient breaking capacity, explosion during closing, etc. High and low voltage electrical complete equipment for vacuum circuit breaker, high and low voltage electrical complete equipment is characterized by air leakage of arc extinguishing chamber and bellows, reduction of vacuum degree, re ignition of cutting capacitor bank, rupture of ceramic tube, etc.

高低压电气成套设备

Complete set of high and low voltage electrical equipment

3、外力及其他故障：

3. External force and other faults:

包括异物撞击，自然灾害，小动物短路等不可知的其他外力及意外故障的发生。

Including foreign body impact, natural disasters, small animal short circuit and other unknown external forces and accidental failures.

4、绝缘故障：

4. Insulation failure:

绝缘水平是要正确处理作用在绝缘上的各种电压(包括运行电压和各种过电压)、各种限压措施、绝缘强度这三者之间的关系。高低压电气成套设备力求使产品做到既又经济，高低压电气成套设备得到佳的经济效益。高低压电气成套设备在绝缘方面的故障主要表现为外绝缘对地闪络击穿，内绝缘对地闪络击穿，相间绝缘闪络击穿，雷电过电压闪络击穿，瓷瓶套管、电容套管闪络、污闪、击穿、爆炸，提升杆闪络，CT闪络、击穿、爆炸，瓷瓶断裂等。

Insulation level is to correctly deal with the relationship between various voltages (including operating voltage and various overvoltage), various voltage limiting measures and insulation strength. High and low voltage electrical complete sets of equipment strive to make products safe and economical, and high and low voltage electrical complete sets of equipment get good economic benefits. The insulation faults of high and low voltage complete electrical equipment are mainly manifested in external insulation flashover and breakdown to ground, internal insulation flashover and breakdown to ground, interphase insulation flashover and breakdown, lightning overvoltage flashover and breakdown, porcelain insulator bushing, capacitor bushing flashover, pollution flashover, breakdown and explosion, lifting rod flashover, CT flashover, breakdown and explosion, porcelain insulator fracture, etc.

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