How to detect high-voltage motor electrical connection fault? Are you still worried about the electrical connection failure of the high-voltage motor? Meiteng electromechanical small make up today for you to solve for you share, then small make up to see how to detect the high-voltage motor electrical connection fault!

　　I. shortcomings and lack of traditional motor fault detection methods:

　　In the motor fault, because of electrical connection and want to fault, occupy a large proportion, and often easy to find the fault point. To determine whether the electrical connection point is outstanding, the following are generally used:

　　(1) intuitive view: that is to see whether there is no change in color, arc burn mark, there is no cracking, etc.

　　(2) hammer to see: that is to say, tap the connection point with a small hammer, listen to whether there is abnormal sound.

　　(3) fastening bolts: all the electrical connection point to re-tighten, loose is bad touch.

　　(4) plug ruler view: measurement of the two joint surface, there is a gap for the poor touch.

　　(5) electric view: with two arms bridge measurement motor dc resistance, compared over the years of record (note to convert to the same temperature), different from each other greatly touch bad.

　　Two good fault diagnosis methods:

　　In infrared thermometer test electrical connection point temperature, the temperature is a very important elements of equipment fault diagnosis, electric cohesion owe good, often join some fever, discriminant join point of failure, through temperature changes can use infrared thermometer can quickly provide temperature measurement, safe, accurate and do not have to stop.

　　2. The loop resistance tester measures the touch resistance of the electrical connection point. The loop resistance tester USES 220V ac power supply, which is composed of digital voltmeter measurement and adjustable constant current source. It can be specific to the touch point, through a large current of 100A, directly read by the digital table touch resistance value. It can clearly and intuitively reflect whether the connection is outstanding or not.

　　3. The two new methods can visually, comprehensively and accurately detect the poor touch at the electrical connection point of the motor, and eliminate potential accidents in a timely manner. In large and medium-sized dc motor, there are many connection points, especially the electrical connection between copper and aluminum is easy to touch bad, before it was out of order, it must be shut down for maintenance, now it is changed to a new method of detection can not shut down. The practice has proved that the new method is effective, which not only protects the motor, but also wins a lot of time for the production.