NY型(NY_5、NY_6、NY_7)内燃机车转数表、速度表随车运用已经十几年了,其电机不断发生故障和损坏。过去依靠西德进口,每只电机需要外汇1000元以上。为了给国家节约外汇资金,我们决心将过去报废的电机重新修复使用。经分解检查发现,这些电机主要是由于绕组断路、接地、转子与轴脱离和转子磁钢退磁等原因而损坏的。我们针对这些问题现已修 NY type (NY_5, NY_6, NY_7) diesel locomotive speedometer, speedometer with the use of the car has been more than 10 years, the motor continues to malfunction and damage. In the past rely on imports from West Germany, each motor requires more than 1,000 yuan of foreign exchange. In order to save foreign exchange funds for the country, we are determined to re-use the motor scrapped in the past. Decomposition inspection found that these motors are mainly due to winding circuit, grounding, rotor and shaft detachment and the rotor magnet demagnetization and other reasons damaged. We have now revised these questions