来源：http://www.jnmcd.com 发布时间：2018-12-19 浏览：次
The judgment methods of the quality of DC miniature deceleration motor are as follows:
1. When the DC high-power motor runs to a steady temperature rise, the multimeter is used to measure the resistance of the winding, usually from zero to several ohms.
2. If the hand-rotated motor has significant resistance, it is clarified that there are short-circuit points inside the motor.
3. Connecting the positive and negative poles together, there will be great resistance when the poles are twisted by hand, so as to clarify that the line is normal or there will be breakpoints inside.
4. Investigate the reversing spark when the power is switched on, no spark is the best, sparks with stars and dots are outstanding, sparks are connected in a bad way, and ring sparks can not be used.
5. Add extra voltage to measure the speed and indicate that the error of speed should not exceed 10.
6. After running to a stable temperature rise, the surface temperature of the motor should not exceed 80 degrees Celsius. If exceeding this value, the temperature rise of the motor can not be cleared.
7. Add 1.2 times the extra voltage and run for 2 minutes. Investigate if there is any abnormality.
The above information is organized and released by our Shandong micro-motor, hoping to bring a little help to everyone's life in the future: http://www.jnmcd.com!