YRQ 138-8 Three-phase Asynchronous Motor 8 Pole 380V

Brief Introduction

YRQ series wound-rotor three-phase asynchronous motors are professional heavy-duty industrial drive solutions, optimized for scenarios requiring high starting torque, adjustable speed and long-term stable operation. Targeting core sectors like mining, material handling and industrial bulk processing, this series, taking YRQ138 motor 8 pole as example, excels in driving high-inertia loads under variable working conditions, becoming a reliable core component for heavy industrial production lines.

Adopting an advanced wound-rotor structure, the YRQ series boasts outstanding low-speed torque performance and flexible speed regulation capacity, which can be matched with external resistance devices or frequency converters to realize stepless and precise speed adjustment. Taking the YRQ138 motor 8 pole model as the representative, it outputs a rated power of 245 kW, with a stator voltage of 380 V, a rotor voltage of 446 V and a rated speed of 735 r/min, ensuring smooth acceleration and consistent operation even when the load changes, effectively improving the operational efficiency of equipment.

In terms of structural design and material selection, the series adheres to the high durability standard: both stator and rotor adopt F-class (155°C) insulation, adapting to the temperature changes of industrial working environments; the IC 01 self-ventilation cooling system achieves efficient heat dissipation, supporting S1 continuous working system; the IP20 protection grade effectively prevents dust and debris from entering the interior, and the premium NU322ECM and 6322/C3 bearings reduce mechanical wear to the minimum, greatly lowering daily maintenance costs and extending the service life of the whole machine.

With a rated efficiency of 92.5% and a power factor of 0.83, the YRQ-138 motor 8 pole realizes the perfect balance of high power output and energy saving, helping enterprises reduce long-term operational energy consumption. All products comply with the national standard GB/T 755 and have passed CE certification, fully meeting international safety and performance norms. Backed by SIMO's complete technical support and after-sales service system, the YRQ series provides industrial customers with cost-effective, high-reliability drive solutions, and strongly supports the stable and efficient operation of critical production links.

Main Technical Parameters

Production Details

Frame

• Compact and robust iron casting frame

• Universal IEC installation dimensions available

• Customizable outlook and dimensions

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Stator

• 99.9% pure copper winding for stator to ensure the output power and efficiency

• Excellent insulation system with 5 more processing flows

• All the windings are fitted in by handwork to ensure all slots are full and avoid any winding flaw.

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Rotor

• Aluminum casting rotor with high quality silicon steel rotor core to assure induction efficiency

• Well and precisely machined shafts with good capacity of strength and toughness

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Testing

• All motors must pass the piece testing before painting and packaging

• Type tests will be regularly performed for each series, more often for new developed series and variants.

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Applications

Cement

Power station

Steel

Sugar

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