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由上海局机务处,漳平供电段和上海电瓷厂共同研制的“YSW—42型电气化铁道用金属氧化物避雷器”属交流无间隙型,由于氧化锌电阻片优良的非线性特性,该产品不仅可以作为雷电和操作过电压保护,还具有良好的陡波响应特性,能量吸收能力及承受较高工频暂态过电压的能力。该产品重量轻,体积小,通用性强,是一种可以用取代传统碳化硅避雷器比较理想的过电压保护装置。所以也完全适用于27.5KV铁道电力牵引网的过电压保护。
YSW-42 type metal oxide surge arrester for electrified railway is jointly developed by Shanghai Office, Zhangping Power Supply Section and Shanghai Ceramics Factory. Because of the excellent non-linearity of zinc oxide varistor, Can be used as lightning and operating over-voltage protection, but also has a good steep wave response characteristics, energy absorption and ability to withstand higher power frequency transient over-voltage. The product is light weight, small size, versatility, is an ideal over-voltage protection device that can replace the traditional silicon carbide surge arresters. Therefore, it is also fully suitable for overvoltage protection of 27.5KV railway electric traction network.