Reduced voltage starting autotransformer‌

LEABE Reduced Voltage Starting Autotransformer (QOSC Series) Product Overview The LEABE Reduced Voltage Starting Autotransformer (QOSC Series) is a high-efficiency Motor Starting Transformer designed to mitigate the high inrush currents associated with AC asynchronous motor startups. By reducing the voltage supplied to the motor during the initial acceleration phase, this Dry-Type Transformer limits starting currents to 5–7 times the rated current, preventing grid instability and mechanical stress. It is the preferred solution for heavy industrial applications requiring high starting torque and minimal power disruption. Technical Specifications Rated Power: 220 kW to 20,000 kW Voltage Class: Medium Voltage (Customizable) Starting Voltage Tapping: 50%, 65%, 80% (User-selectable based on load requirements) Insulation Class: F (155°C) Cooling Method: ANAN (Air Natural) Winding Material: High-purity Copper Core Material: High-grade CRGO Silicon Steel Encapsulation: Epoxy Resin (Vac…