What causes flashover in a motor?

Flashover in a motor is typically caused by a buildup of electrical insulation failure due to factors such as excessive voltage, moisture, dirt, or contaminants on the insulation surfaces. This can lead to arcing or short-circuiting between conductors or between a conductor and the motor frame. Overheating and mechanical wear can also compromise insulation integrity, further increasing the risk of flashover. Proper maintenance and monitoring are essential to prevent such events.