SGYQ Series High-Voltage Cage Motor Liquid Resistance Starting Device
This device incorporates three-phase liquid resistors into the stator circuit of a squirrel-cage motor. Upon motor start-up, these resistors are automatically engaged, with their resistance decreasing continuously over a predetermined period until it approaches zero, at which point they are automatically disconnected. This allows the motor’s terminal voltage to increase gradually, resulting in a smooth, shock-free soft start. This starting method imposes no impact on the power grid and produces no harmonic distortion, making it suitable for the soft starting of three-phase AC squirrel-cage induction motors and synchronous motors operating at 3 kV, 6 kV and 10 kV, with rated power up to 20,000 kW. The product is widely used across numerous industrial sectors, including metallurgy, petroleum, chemicals, water conservancy, power generation, machinery, coal, building materials, defence, pharmaceuticals and municipal engineering.

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