Automatic switching device for motor insulation heater in 6kV high-voltage switch cabinet

The utility model provides an automatic switching device for a motor insulation heater in a 6kV high-voltage switch cabinet, which comprises a heater main loop, a manual and automatic control loop and a temperature controller control loop, and is characterized in that the heater main loop is used for controlling the start and stop of a motor heater body; the manual and automatic control loop is used for controlling the opening/closing of the heater main loop, and meanwhile, the main loop provides a power supply for the temperature controller control loop; the temperature controller control loop is used for controlling the opening and closing of the heater main loop; the device can avoid the risk that the heater is frequently put into and withdrawn after a high-voltage motor which is frequently started and stopped is started and stopped, and the service life of the heater is prolonged. 本实用新型提供的一种6kV高压开关柜内电机绝缘加热器自动投退装置，包括加热器主回路、手动与自动控制回路和温控器控制回路,其中，加热器主回路用于控制电机加热器本体的启停；所述手动与自动控制回路用于控制加热器主回路的开/合闸，同时主回路向温控器控制回路提供