2Y- connection two-speed motor contactor control one circuit

  
Circuit shown in Figure 3-96. Figure, SBz is running at low speed button, SBi as the high-speed operation button. SB3 for the stop button. In this circuit, a motor connected in
2Y- connection two-speed motor contactor control one circuit - schematic

to shape when 2Y, first contact the center point of the stator winding KMa turned, then KMz it was electric pull, power. This can be avoided when the power is turned on, due to excessive current burn KM3 main contact.




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