YJTFKK400-4G VVVF Three-phase Asynchronous 500 Kw Electric Motor

AIMIN ELECTRICS CO., LTD. is one of the leading manufacturers and suppliers of yjtfkk400-4g vvvf three-phase asynchronous 500 kw electric motor 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

Manufactured by AIMIN Motor, the YJTFKK400-4G is a high-performance variable-frequency three-phase asynchronous motor engineered for heavy-duty industrial operations. Built with precision and reliability at its core, this 500 kw electric motor delivers exceptional efficiency and durability, making it a trusted power solution for modern industrial applications.

Key Performance & Technical Advantages

With a rated power of 500 kW and an efficiency of 93.1%, this 500 kw electric motor minimizes energy waste while maximizing output. It operates at a rated speed of 1485 r/min (50 Hz) and generates a rated torque of 3183 N·m, ensuring stable and powerful performance. The stator is designed for 10000 V operation with a current of 35.6 A, using a Y connection and Class 155 thermal insulation to withstand high-voltage and high-temperature conditions.

It supports a frequency range of 50–70 Hz, enabling flexible speed adjustment to match diverse load requirements. Rated for S1 continuous duty, it is built for 24/7 operation, with an IP55 protection rating that shields against dust and water ingress. The IC611 cooling system efficiently dissipates heat, preventing overheating even under sustained heavy loads. Weighing 3160 kg and featuring an IM B3 mounting design, it integrates seamlessly with industrial machinery such as pumps, fans, compressors, and crushers.

Robust Design & Operational Safety

The motor's rigid frame ensures structural stability during high-speed operation, while its precision bearing system (NU224ECM at the drive end, 6224/C3 at the non-drive end) reduces friction and extends service life. The stator winding is treated with advanced insulation processes, enhancing resistance to moisture, corrosion, and electrical stress.

Safety guidelines are strictly integrated into its design: 2-pole operation must follow the indicated rotation direction; circulating cooling water is required for air-water cooling systems before startup; and heavy-load reduced-voltage starting must account for torque-voltage relationships to avoid winding overheating. Additionally, winding grounding is prohibited, and precise shaft alignment with driven machinery is mandatory to prevent vibration and wear.

Application & Compliance

Suitable for ambient temperatures up to 40°C and altitudes of 1100 m, this 500 kw electric motor adapts to challenging industrial environments, including mining, metallurgy, power generation, and chemical processing. Its variable-frequency capability allows stepless speed control, delivering 20–35% energy savings for fan and pump applications compared to fixed-speed motors.

Certified CE and manufactured to standard CJ/XD.510.316, the YJTFKK400-4G meets global quality and safety standards. Backed by Xi'an AIMIN Motor's expertise, it combines high efficiency, reliability, and low maintenance, offering enterprises a cost-effective solution to boost productivity while reducing long-term operational costs.

Main Technical Parameters

Why choose AIMIN Brand YJTFKK series of Motor?

Choose the AIMIN YJTFKK400-4G for its 500 kW high power, 93.1% efficiency, and 50–70 Hz variable speed, delivering stable 3183 N·m torque. With CE certification, IP55 protection, and IC611 cooling, it ensures reliable 24/7 operation in harsh industrial environments, cutting energy costs while boosting productivity.

Production Details

Frame

• Box structure frame, easy for maintaining and installation

• Flexible for special installation dimensions

• 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 possible winding flaw.

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Rotor

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

• Copper bar rotor is available for YJTFKK motor

• 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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Package and delivery

• All motors will be packaged well before delivery

• Plastic cover inside, vacuum tin foil outer and then solid wood box

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Applications

Cement

Power Station

Water

Mining

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