FIELD: electricity.
SUBSTANCE: in the mains voltage control unit the transformer primary winding connected through the reverse polarity switch with the adjusting winding (secondary winding) of the transformer and placed with it on the same magnetic conductor is installed in the device with a possibility of interaction with the winding of the voltage measuring transformer connected to the electric drive-connected controller. The device contains two additional regulators which are identical with the first one. Regulators are connected to the three-phase voltage network with formation of the connection circuit designed as a full triangle as it is indicated in the application materials.
EFFECT: improved reliability.
2 dwg
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SU606186A1 |
