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Three-phase motor two-speed 2Y/△ connection speed regulating circuit (1)
Source: InternetPublisher:闪电杰克 Updated: 2015/03/30
The circuit shares three AC contactors. Button STH is a high-speed control button. Press it, AC contactors 1KMH and 2KMH are closed at the same time, and motor M operates at high speed (2Y). Button STL is a low-speed control button. Press it, AC contactor KML is closed, and motor M operates at low speed (△). Press STP and the motor stops. FT is a thermal relay, used for overload protection. Latest Control Circuits Circuits
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