HV Liquid Resistance Starter (HRQ Series) | 6–10kV Wound Rotor Motor Starter

The HRQ wound-rotor motor liquid resistance starter is a novel starter developed to enhance the starting performance of large and medium-sized wound-rotor AC motors. It achieves this by incorporating a liquid resistor in series with the motor rotor circuit, automatically and infinitely adjusting the resistance value to consistently meet the motor's mechanical characteristics for the required resistance value. This enables the motor to achieve uniform speed increase without impact, starting smoothly, and with maximum starting torque and minimum starting current. After starting, the rotor circuit automatically short-circuits. It is suitable for heavy-load wound-rotor AC asynchronous motors such as ball mills, fans, rolling mills, and water pumps in the building materials, chemical, and metallurgical industries. It has solved the problem of difficult starting for large and medium-sized motors. This product has been used as the latest replacement starter in over a thousand enterprises nationwide, and its excellent starting performance has been widely praised by users.