YJTFKK450-4 VVVF 3 Phase 4 Pole Induction Motor 1490rpm 50Hz

Brief Introduction

The YJTFKK450-4 3 phase 4 pole induction motor manufactured by XI'AN SIMO MOTOR CO.,LTD is a high-performance variable frequency three-phase asynchronous motor specially developed for heavy-duty industrial variable speed working conditions. Designed and produced in strict accordance with JB/T 12729 national standards, this high-voltage motor features a rated power of 630kW, a stator rated voltage of 10000V, a rated speed of 1490 r/min and an ultra-high energy efficiency reaching 93.5%, which effectively reduces long-term operating energy consumption for enterprises and complies with global energy-saving and emission-reduction industrial requirements. The motor adopts Y-type winding connection mode, Class 155 heat-resistant insulation system and IP55 high-level protection grade, which can effectively resist the intrusion of dust, splashing water and other pollutants in harsh production workshops, mines, chemical plants and other complex application environments. Its design allows stable frequency conversion operation within the range of 30Hz to 50Hz, with stable output torque in the whole speed regulation range, perfectly matching VVVF frequency converters to realize stepless speed regulation, greatly expanding the applicable working scenarios of traditional fixed-speed high-voltage motors.

In terms of structural and operational reliability, this 3 phase 4 pole induction motor is equipped with heavy-duty NU228ECM main drive-end bearings and 6226/C3 non-drive-end bearings, which can bear large radial and axial loads generated during long-time heavy-load startup and continuous operation, avoiding bearing wear, overheating and unexpected shutdown failures. The motor adopts S1 continuous working system, supporting 24-hour non-stop stable operation under rated load, with a total net weight of 4240kg and a center height of 1000mm, featuring a solid and robust overall cast iron frame structure to resist mechanical vibration and impact during equipment startup and operation. For models configured with air-water cooling devices, operators must inject specified circulating cooling water before startup to ensure effective heat dissipation of the stator winding; for motors with composite lubrication sliding bearings, external circulating grease supply must be guaranteed to prevent bearing ablation caused by insufficient lubrication. In terms of safety specifications, the motor strictly prohibits winding grounding operation, and the coaxiality of the coupling must be calibrated during connection with driven equipment such as fans, water pumps, compressors and rolling mills to eliminate eccentric wear and vibration risks. When adopting reduced-voltage heavy-load startup, users need to fully consider the square proportional decline characteristic of starting torque and starting voltage to avoid overlong startup time leading to winding overheating and permanent insulation damage.

In terms of application scope and after-sales guarantee, this series of 3 phase 4 pole induction motor has obtained CE certification, meeting the safety access standards of European and global mainstream industrial markets, and can be widely matched with high-power pumps, large industrial fans, mining conveying equipment, metallurgical rolling equipment, chemical fluid processing equipment and other high-load variable-speed industrial machinery. Compared with conventional fixed-speed high-voltage motors, SIMO variable frequency asynchronous motors can flexibly adjust operating speed according to actual production demand, which not only improves production process accuracy, but also significantly cuts down invalid energy consumption during low-load operation. Each motor undergoes strict factory inspection including winding insulation resistance test, no-load running test, vibration and noise detection before delivery, with a clear unique factory serial number to realize full lifecycle product traceability. Equipped with complete safety operation warning specifications, detailed parameter nameplate and professional technical operation manual, it can guide installation engineers to complete standardized equipment commissioning, effectively extend the service life of the main motor body and matched transmission equipment, becoming a reliable high-efficiency power core choice for medium and large industrial variable drive projects worldwide.

Main Technical Parameters

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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