YRQ 1512-8AS Three-phase Asynchronous 630KW 8 Pole 3 Phase Motor

Brief Introduction

The YRQ series high‑voltage wound‑rotor three‑phase asynchronous 8 pole 3 phase motor, with the typical model YRQ1512‑8AS, is a flagship heavy‑duty drive product independently developed and manufactured by Xi'an SIMO Motor Co., Ltd., a professional high‑end motor supplier in China. This model is rated at 630 kW, 11 kV high‑voltage input, 50 Hz frequency, with a rated speed of 740 r/min. It strictly follows the national standard GB/T 755, featuring mature technology, stable performance and strong environmental adaptability, and is specially tailored for continuous heavy‑load industrial operation scenarios.

In terms of structural and performance advantages, this series 8 pole 3 phase motor adopts a professional wound‑rotor design. Compared with squirrel‑cage motors, it can connect external resistance or reactance devices, which effectively increases starting torque, limits starting current, and realizes flexible speed regulation, perfectly solving the startup difficulty of large‑scale heavy‑load equipment. It is equipped with Class 155 high‑temperature‑resistant insulation system for both stator and rotor windings, supporting S1 continuous‑operation duty, so it can run stably for a long time under full‑load working conditions without overheating risks. The stator adopts star connection with a rated current of 42.1 A, while the rotor with 780 V rated voltage and 487 A rated current ensures efficient power transmission.

The motor uses high‑precision heavy‑duty rolling bearings: the drive‑end bearing is NU326ECM and the non‑drive‑end is 6326/C3, which have strong load‑bearing capacity, wear resistance and long service life. Optimized electromagnetic design greatly improves power factor up to 0.84, reduces reactive power loss and energy consumption, and meets modern industrial energy‑saving requirements. Its robust cast‑iron frame features good shock resistance and vibration damping performance, adapting to high‑altitude areas up to 1000 m and high‑temperature environments up to 40 ℃, suitable for various harsh industrial working conditions. Strict quality control and CE certification guarantee its safety and reliability for global industrial markets.

This series 8 pole 3 phase motor is widely applied in core heavy‑industry fields. It serves as key driving equipment for metallurgical rolling mills, mine hoists and large‑capacity conveyors, cement rotary kilns and raw material grinding mills, large‑scale industrial fans, water pumps, compressors, as well as chemical and building material production lines. For production equipment requiring high starting torque, long‑time continuous operation and stable power supply, the YRQ series motor significantly improves overall production efficiency, reduces downtime and maintenance costs, and has become a preferred power solution for heavy‑duty industrial equipment worldwide, winning high recognition for its durability and stable performance.

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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