YRQ138-8 3 Phase Motor Speed 735rpm 245kW 380V

Xi’an Simo Motor Co., Ltd. is one of the leading manufacturers and suppliers of yrq138-8 3 phase motor speed 735rpm 245kw 380v in China. With abundant experience, we are committed to providing high quality customized products with competitive price. We warmly welcome you to buy bulk premium products made in China here and get quotation from our factory.

Brief Introduction

When it comes to heavy-load industrial equipment that requires stable startup torque and adjustable running performance, the SIMO YRQ series wound rotor 3 phase motor stands out as a reliable power solution, and precise control over 3 phase motor speed is one of its most prominent technical advantages. Manufactured by Xi'an SIMO Motor Co., Ltd., this range of slip ring three-phase asynchronous motors is engineered to handle harsh working conditions in mining, metallurgy, cement, bulk material transportation and large crushing machinery. The showcased YRQ138-8 model with 245kW rated power perfectly demonstrates the core strengths of the entire YRQ product line, tailored for scenarios demanding frequent startup, heavy overload resistance and steady running parameters.

This 245kW 8-pole industrial motor runs on a 380V 50Hz power supply, with a stator rated current of 485A and a rotor voltage of 446V at a rotor current of 342A. It adopts delta connection for the stator and star connection for the rotor, reaching an impressive energy efficiency of 92.5% alongside a power factor of 0.83. Its rated rotating speed is 735 r/min, and by matching external resistance cabinets or dedicated control systems, users can flexibly adjust the 3 phase motor speed to match different production process requirements, which is the core reason why wound rotor motors are irreplaceable in heavy industry. Unlike ordinary squirrel-cage motors, the slip ring structure effectively limits startup current while releasing large starting torque, avoiding voltage impact on the power grid and mechanical shock to driven equipment during frequent startup and braking cycles.

In terms of structural safety and environmental adaptability, the YRQ series motor is equipped with Class 155 high-temperature resistant insulation for both stator and rotor windings, supporting S1 continuous duty long-time stable operation. It features IP20 protection grade and IC01 natural cooling mode, paired with heavy-duty bearings: drive end adopts NU322ECM cylindrical roller bearing to bear large radial impact load, and non-drive end uses 6322/C3 deep groove ball bearing to guarantee stable axial positioning. The motor can normally operate within an ambient temperature range of -15℃ to 40℃ and works safely at an altitude up to 1000 meters. With standard IM B3 foot-mounted installation, it is highly compatible with most large industrial transmission equipment, and the robust cast iron frame weighing 2320kg provides excellent mechanical shock resistance and structural stability.

Every SIMO YRQ series 3 phase motor is strictly tested in accordance with GB/T 755 national standards and certified with CE approval to meet global market access requirements. For heavy production lines that need flexible process adjustment, precise regulation of 3 phase motor speed greatly optimizes equipment operation efficiency and reduces mechanical wear and energy waste. Whether used for mine belt conveyors, ball mills, rotary kilns or large crushers, SIMO YRQ wound rotor motors deliver strong overload capacity, stable running performance and ultra-long service life, becoming a trusted high-power drive choice for industrial enterprises pursuing safety, efficiency and low operational maintenance costs.

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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