Pump control system and pump control cabinet products have various functions such as overload, short circuit, phase loss protection, pump body leakage, motor over temperature and leakage, etc., which can be applied to submersible pumps, self-priming pumps, pipeline centrifugal pumps, oil pumps. , etc., the protection of the pump.
Star triangle start control: press the start button KM1 to self-protection, and start timing by KM2's normally closed auxiliary contact time relay. KM3 passes the normally closed auxiliary contact of time relay and KM2 normally closed auxiliary contact. Power, time relay timing in place, time relay normally closed to open KM3 power-off reset, while time relay normally open contact suction KM2 (angle type) through KM3 normally closed contact power self-protection, while KM2 normally closed contact The disconnection time relay is de-energized and the motor is angularly operated. (KM2 and KM3 are interlocked)
Star Delta step-down wiring schematic:
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