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Single-phase motor winding tap L-1 connection three-speed ci

2016-09-01 07:07  
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Single-phase motor winding tap L-1 connection three-speed circuit
The speed control switch SA increases a medium-speed gear. When SA is allocated to the medium speed II , a part of the governor winding is connected to the auxiliary winding LA, another part is connected in series to the main winding LR, so that the motor is running in the medium speed. The characteristics of the L-1 connection: the main winding LR and governor winding LD are distributed in the same slot with the same phase, and all the windings are involved in the high, medium and low speed operation.