2Y-2Y-2Y-connected three-speed motor contactor control circuit

  
Circuit shown in Figure 3-115. It uses contactors and double buttons, so when converting speed without press stop press ugly, can be directly converted. SBi, SBz button and SB3
2Y-2Y-2Y-connected three-speed motor contactor control circuit - schematic

are high, medium and low speed operation button.




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