GB/T 25122的本部分规定了机车车辆用电力变流器的术语和定义、使用条件、一般特性和检验方法。本部分适用于为轨道交通机车车辆的牵引电路和辅助电路(动力车辆、客车及拖车)供电的电力变流器。本部分也可应用于其他牵引车辆(例如无轨电车等)的电力变流器。本部分适用于完整的变流器机组及其配置,包括:--半导体器件组件;--集成冷却系统;--包括电感、电容、变压器、电阻、接触器、开关的集成组件;--半导体驱动单元(semiconductor drive units 简称SDU)及相关传感器;--保护电路。本部分包含了下列类型的供电电源:--交流接触网;--直流接触网;--车载电源(例如发电机、蓄电池以及其他电源)。本部分不适用于为半导体驱动单元(SDU)提供电气控制电源的变流器和为变流器工作相关的其他设备(如传感器)供电的变流器。
定价: 76元 / 折扣价: 65 元 加购物车
This part of GB/T 25122 specifies the service conditions,system structure,general characteristics,technical requirements,test methods,test rules,marking,packaging,transport and storage of traction converters for AC driving locomotive.
This part is applicable to the traction converters for AC driving locomotive (hereinafter referred to as “converter”),and may be refered by other traction converters with similar purposes.
定价: 516元 / 折扣价: 439 元 加购物车
This standard specifies the contents, painting position, font and size of markings of diesel locomotive and electric locomotive.
This standard is applicable to the markings of diesel locomotive and electric locomotive (hereinafter brief as Locomotive) which belong to the former Ministry of Railway.
定价: 312元 / 折扣价: 266 元 加购物车
This standard specifies the inspection requirements and test methods for the appearance, structure and main technical performance of rail heavy-duty maintenance machinery.
This standard is applicable to the inspection and test of rail heavy-duty maintenance machines and their major components on completion of construction and before entry into service.For rail heavy-duty maintenance machinery that requires overhaul, it can also be referred to.
定价: 516元 / 折扣价: 439 元 加购物车