New type electric control big gate valve is introduced, which USES JZ - 7 locomotivebrake and it is controlled by microprocessor and stepping motor.
介绍了新型电控大闸采用JZ - 7机车制动机，通过微处理器和步进电机实现控制。
2
The auxiliary inverter system of electric locomotive is used to cool down the main circuit and offer wind regime for the air brake system.
电力机车的辅助变流系统主要为机车主电路提供冷却，为空气制动系统提供风源。
3
The localized modification program is given for PBL2 button electro-pneumatic brake in 8k locomotive. The principle and structure of the brake after modification is explained.