How many volts is a high voltage motor? What are the advantages and disadvantages of comparing it to a typical low voltage motor?

The domestic high-voltage motors are generally referred to as 6 kV motors.

Generally, motors with rated power above 250KW are designed with high voltage (6kV) level, so that the primary bus capacity can be saved.

Because if the high-power motors with low voltage levels, a current will be very large, the same primary busbar will require a very thick, cable specifications will be increased accordingly, is not conducive to the saving of raw materials, maintenance is not convenient.