The YCQD7 series intelligent integrated star-delta starter (hereinafter referred to as the starter) is suitable for three-phase squirrel-cage asynchronous motors with an AC frequency of 50Hz, a rated voltage of 380V/400V, a rated operating current of up to 110A (phase current when the starter is in delta connection), and a control power of up to 90kW. It is used to control the starting, running, and stopping of three-phase squirrel-cage asynchronous motors with a stator winding connection changed from star to delta, thereby reducing the starting current and the impact of motor starting on the transmission network.

The starter adopts modular design and integrated structure, integrating contactor, intelligent controller and auxiliary contactor. The intelligent controller can automatically control the starter operation according to the predetermined program to complete the star-delta starting of the motor.

This soft starter is an advanced digital soft start solution suitable for motors with power ranging from 0.37kW to 115kW. Provides a complete set of comprehensive motor and system protection functions, ensuring reliable performance even in the harshest installation environments.

The main function of the built-in bypass soft starter is to reduce the pressure on the motor during startup by controlling the voltage and current changes, thereby increasing startup efficiency and extending the motor’s lifespan. The built-in bypass soft starter typically includes bypass contactors and control power supplies, enabling a smooth transition to bypass mode during startup to prevent the motor from experiencing excessive current and voltage shocks.

General
YCQJ7 series motor controller (hereinafter referred to as controller)is mainly used in circuits with afrequency ofAC 50Hz(or 60Hz),a rated operational voltage of up to380V and a rated control power of up to 18.5kW (current upto 38A)to control the direct startand stop of water pumps ormotors,provide motors withoverload and phasefailure protection,and realize automaticliquid level control for civil water towersand reservoirs.Thisproduct is not applicable to theliquid levelcontrol oflow-conductivity liquids,such as oil,purified water,inflammableandexplosive chemical liquids and high-density sewage.
Standards:IEC60947-4-1.