Share a way to test a good motor with one electric pen
With a multimeter, megohmmeter to determine the motor is good or bad, I believe that all peers are very familiar with this is also one of the electrician exam must operate, but when encountered in some special circumstances, such as the side of only one of the simplest electric pen, we have no way to detect the motor is good or bad? Today I will share with you with an electric pen to detect the motor good or bad way, I hope to help you in the future work.
This method is very simple, we do not have to think that there is much trouble, the measurement does not need others to help assist, a person can operate on their own, the only tool with the help of an induction pen, and in the case of not having to energize the test can be completed.
When the motor is faulty, in the smell, hand turn and other senses can not judge the case, we can use this method: first of all, the right hand to hold the inductive pen, and hold down the induction button, leaning against one of the motor phase line, the left hand to hold the other end of the corresponding phase line, this time, if the pen inductive light, that is, that is to say, the motor of this group of coils is normal, do not light for the winding faults, and so on phase-by-phase detection, phase by phase inspection, under normal conditions, each phase Under normal circumstances, each phase of the winding inductive light brightness should be the same, if there is a difference in brightness, indicating that the winding also has a problem.
Measurement of insulation resistance is the same, a hand holding the pen inductive button, a hand touch the motor shell, do not touch the paint part, be sure to touch the motor metal bare position, then if the inductive pen light indicates that the motor insulation is problematic, the light is not bright means that the motor insulation is good.
Of course, this is only a rough judgment, but the motor failure basically can be detected with this approach, which has the advantage of being very time-saving, trouble-saving, and judging the correct rate is very high, of course, if you need to measure the precise insulation resistance, or shaking the table to a more accurate and reliable.
