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介绍了对SS4改型机车零压保护电路进行改进的方案。此项改进解决了机车零压继电器容易过烧,造成零压灯不灭的故障,确保零压时间继电器286KT可靠动作,提高了机车运行质量。
Introduced the SS4 modified locomotive zero voltage protection circuit to improve the program. This improvement solves the locomotive zero-voltage relay easily over-burning, resulting in zero-pressure lamp does not extinguish the failure to ensure zero-pressure time relay 286KT reliable action and improve locomotive operation quality.