FIELD: electricity.
SUBSTANCE: device for drying of electric motor winding insulation with zero-sequence current comprises a variable resistor, which slide is connected to the first conductor of alternating-current mains while the second conductor of alternating-current mains is coupled to input of ammeter connected by its output to input of open delta, the output connected to fixed contact of the variable resistor. Double-pole switch device is mounted additionally with its output connected to peaks of open delta and its input is connected by the first and second poles of the first and second conductors of alternating-current mains respectively.
EFFECT: improved operational reliability of electric motors.
1 dwg
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