YJTKK 400-6Cu - A 3 Phase Induction Motor 450 kW

Title:

YJTKK400-6Cu VVVF Three-phase Asynchronous Motor 

Brief Introduction

The YJTKK400-6CU is a 3 phase induction motor developed specifically for heavy-duty industrial applications. As a core power unit engineered for mission-critical scenarios, this motor features nominal parameters of 450kW output power, 10kV rated voltage, and 990rpm rated speed-key specifications that enable it to meet the continuous high-load operation requirements of industries including thermal power generation, large-scale petrochemical processing, heavy machinery manufacturing, and metallurgical production. In these sectors, the motor's ability to deliver uninterrupted, stable power directly determines the operational efficiency, safety, and downtime rate of production systems.

1. Operational Adaptability: Tailored for Dynamic Load Demands

The YJTKK400-6CU, as 3 phase induction motor is equipped with advanced VVVF speed regulation technology, supporting stepless speed adjustment within a wide range (adjustment range subject to actual frequency converter configuration). This feature ensures precise matching between motor speed and dynamic load changes of industrial equipment, optimizing energy utilization and operational efficiency. In terms of starting performance, it adopts a heavy-load dedicated starting design, providing a starting torque coefficient of ≥1.8 (typical value) to ensure smooth startup under full-load conditions. It should be emphasized that reduced-voltage starting is not applicable to this model, as it will lead to a significant decrease in starting torque, affecting operational stability under heavy-load conditions. Typical application scenarios include large belt conveyors, high-lift pumps, and heavy-duty induced draft fans that require both speed flexibility and high starting reliability.

2. Environmental Resilience: Engineered for Harsh Working Conditions

To ensure long-term reliable operation in harsh industrial environments, the YJTKK400-6CU incorporates multiple protective and durable design features. It holds an IP55 ingress protection rating, in line with IEC 60529 standards, effectively preventing the intrusion of solid particles (diameter ≥50μm) and low-pressure water jets (from any direction), making it suitable for dusty, humid, or outdoor exposed working environments. The motor adopts Class F insulation (155℃) in accordance with IEC 60085, with a temperature rise limit of 105K (stator winding, resistance method), ensuring thermal stability during long-term continuous operation. For thermal management, a dedicated air-water cooling system is integrated, with a cooling capacity of ≥5.2kW (typical value) at rated load, efficiently dissipating heat generated by the stator, rotor, and other components. Additionally, the motor's drive-end and non-drive-end bearings use compound grease lubrication, providing excellent wear resistance and operating life under high-temperature, high-speed conditions. These design features enable the motor to operate reliably in ambient temperatures of -15℃ to 40℃ and at altitudes up to 1000m (derating required for altitudes exceeding 1000m).

3. Energy Efficiency & Safety: Compliant with Industrial Standards

The YJTKK400-6CU achieves a 92.7% rated efficiency, meeting the IE3 high-efficiency motor standards. This translates to significant energy savings compared to standard-efficiency motors, reducing annual electricity consumption and operational costs for users. In terms of safety design, the motor complies with IEC 60034 and GB 755 standards, with clear safety markings and operating guidelines. Key safety requirements include: (1) Prohibition of arbitrary earthing of the motor shell or windings to avoid electrical fault risks; (2) Strict coupling alignment tolerance (radial runout ≤0.05mm, axial runout ≤0.02mm) during installation to prevent bearing damage and vibration faults; (3) Mandatory regular inspection of the cooling system and lubrication status to ensure operational safety. These safety measures effectively reduce the risk of equipment failure and operational accidents, extending the motor's service life and reducing maintenance costs.

In summary, as YJTKK400-6CU, a 3 phase induction motor integrates high adaptability, environmental resilience, energy efficiency, and safety, making it a reliable power solution for heavy-duty industrial applications requiring high performance and long-term stability.

Main Technical Parameters

Why choose Simo Brand YJTKK400 series of Motor?

We highly recommend SIMO's YJTKK VVVF three-phase asynchronous motors for their standout 92.7% efficiency, robust 450kW power (10kV rating), and air-water cooling system that ensures stable heavy-load operation. With compound grease lubrication, IP55 protection, and compliance with strict standards, they deliver long-lasting reliability-ideal for industrial applications needing durable, high-performance motor solutions.

Production Details

Frame

• Box structure frame, easy for maintaining and installation

• Flexible dimensions

• Customizable outlook

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Stator

• 99.9% pure copper winding ensures 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 YKK motor

• Pprecisely machined shafts with good capacity of  toughness

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Testing

• All motors must pass the testing before painting and packaging

• We regularly test existing and new products to ensure quality.

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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

YJTKK400 Motor is the widely used in many general industries, such as blowers, pumps, crushers, cutting machines, and many other heavy machines. For more application details, contact us.

Cement

Power Station

Water conservation

Steel

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