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我厂1988年初试制成功的2520 kVA同步牵引发电机用作铁道部ND_4内燃机车的主发电机,电机调速范围广,结构紧凑,性能与法国进口的AT-731A同步牵引主发电机2470kVA12极350V相当,安装尺寸相同,可以替换损坏的法国机组。“2520”同步牵引发电机的结构形式为卧式。单只端盖式的滚动轴承。轴向通风,冷却空气从滑环端的端盖进入,由柴油机端的后倾离心式风扇排出。机座一端与柴油机的导风圈连接,机座具有两只支承座。转子的滑环端为圓锥式小轴伸,可以传递励磁机及空气压缩机,另一端藉弹性连接盘直接连在柴油机轴上。“2520”产品性能具有一定的先进性:它的高、低电压之比(630V/350V)及高低电流之比(4150A/2306A)均为1.8倍;调速范围广,在16～100
Our factory successfully produced 2520 kVA synchronous traction generator at the beginning of 1988, which is used as the main generator of the Ministry of Railways ND_4 diesel locomotive. The motor has a wide range of speed control and compact structure. The AT-731A synchronous traction main generator with the performance of France imported 2470kVA12 pole 350V Equivalent, same mounting dimensions, replace damaged French unit. The structure of the “2520” synchronous traction generator is horizontal. Single end cap type rolling bearing. Axial ventilation, cooling air from the slip ring end of the end cap into the diesel-side rear fan centrifugal discharge. One end of the base is connected with the air guide ring of the diesel engine, and the base has two support seats. The slip ring end of the rotor is a conical small shaft extension, which can transmit the exciter and the air compressor, and the other end is directly connected to the diesel shaft by an elastic connecting plate. “2520” product performance has a certain advanced: its high and low voltage ratio (630V / 350V) and high and low current ratio (4150A / 2306A) are 1.8 times; speed range, in the 16-100