How to distinguish the internal short circuit problem of explosion-proof centrifugal fan


Nowadays, many large and medium-sized venues are indispensable for the application of explosion-proof centrifugal fans. Explosion-proof centrifugal fans can reasonably maintain the natural ventilation and smoke exhaust system in the room. They are essential machinery and equipment in the home and manufacturing industry. , Because the wrong operation will cause abnormal problems inside the explosion-proof centrifugal fan, and the problem of internal short circuit is common. So how can we understand the problem of short circuit inside the explosion-proof centrifugal fan? The following explosion-proof centrifugal fan manufacturers will introduce to you.

Method 1: Observation from the outside: Check whether the terminal and winding beam end of the explosion-proof centrifugal fan are burnt, and the winding remains dark red after overheating, and there is a peculiar smell.

Method 2: Plug-in experiment method: Measure with a current meter. If the current of a certain phase is too large, it indicates that the phase has a short circuit.

Method three, bridge inspection: measure the resistance of each winding, generally the phase distance should not exceed about 5%, if it exceeds, the phase with the smaller resistor will have a short-circuit fault.

Method 4. Current measurement method: When the motor of the explosion-proof centrifugal fan is fully loaded, measure the three-phase current first, and measure and compare the two-phase replacement. If it is not changed with the replacement of the switching power supply, the one-phase winding with a large current is short-circuited.

The above is the content for everyone. If yourExplosion-proof centrifugal fanIf there is a problem of short-circuit failure, why not try the method detailed above. If you have a stronger suggestion, you can also leave a message online and share it with you.

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