High-voltage motors refer to motors with rated voltages above1000 V. Commonly used voltages are 6000V and10000 V. Due to differences in foreign power grids, there are also voltage levels of 3300V and 6600V V.. High-voltage motor is produced because the motor power is directly proportional to the product of voltage and current, so it is difficult to amplify the power of low-voltage motor to a certain extent (for example, 300KW/380V) and the current is limited by the allowable carrying capacity of the conductor, or the cost is too high. It is necessary to increase the voltage to achieve high power output. The advantage of high-voltage motor is its high power. Strong impact resistance; The disadvantage is large inertia. It is difficult to start and brake. The maintenance process of high and low voltage motors mainly includes 9 steps: 1, winding 2, winding before forming 3, forming 4, shaping 5, winding mica tape and hot pressing 6, testing voltage resistance 7, embedding wires (stator and rotor) 8, dipping paint 9 and testing.