YJTKK5603-8BM HV VVVF Three-phase Asynchronous 750 Rpm Electric Motor 800kw

Brief Introduction

Crafted by Xi'an SIMO Motor Co., Ltd. as an indispensable heavy-duty prime mover, the YJTKK series variable-frequency three-phase asynchronous motor amalgamates state-of-the-art heat dissipation, bearing assembly and frequency conversion modulation technologies. The robust 750 rpm electric motor epitomized by model YJTKK5603-8BM emerges as an optimal actuation solution for colossal industrial machinery subject to fluctuating operational regimes. Rigorously engineered to comply with national benchmark JB/T 12729 and endorsed with CE accreditation, this portfolio encompasses high-power variants topping 800kW, sustaining an extensive frequency bandwidth spanning 5Hz to 70Hz, rendering it impeccably compatible with high-voltage variable-frequency drive deployments across mining, metallurgy, water remediation and petrochemical verticals.

This lineup incorporates a high-tension stator architecture calibrated for a nominal voltage of 10kV and rated amperage of 60.4A under the canonical 50Hz operational criterion. It preserves an unattenuated 800kW power throughput throughout the 50–70Hz frequency spectrum, boasting a power factor of 0.82 and an energy conversion efficiency of 93.2%, facilitating exceptional energy conservation amid protracted continuous operation. Its windings adopt Class 155 thermal insulation, substantially elevating thermal tolerance and mitigating insulation degradation incurred by prolonged variable-speed cycling. Boasting an IP54 ingress protection rating, the unit barricades particulate contaminants and liquid splashes, rendering it resilient against grimy, humid harsh workshop terrains.

Thermal management is actualized via an IC 666 air-water composite cooling framework, which leverages recirculated chilled water to dissipate heat accrued under full-load operation. In stark contrast to conventional air-cooled counterparts, it maintains subdued temperature escalation even under S1 uninterrupted duty cycles and protracted heavy-duty initiation. Equipped with composite circulating grease-lubricated journal bearings, the unit mandates ample peripheral grease circulation prior to commissioning to abrade bearing attrition risks prevalent during low-frequency velocity modulation. It deploys NU224ECM drive-end bearings paired with 6332/C3 non-drive-end bearings, endowed with formidable load-bearing resilience to counteract intense radial and axial shock loads emanating from pumps, blowers and compressors.

Sustained torsional output constitutes the series' paramount competitive merit, and the sophisticated 750 rpm electric motor configuration secures invariant torque delivery within the 5–50Hz low-frequency domain. Conventional motors suffer drastic torque attenuation proportional to the square of voltage when undertaking heavy-load reduced-voltage startup, culminating in winding overheating or coil impairment from protracted cranking durations. Conversely, the YJTKK series refines rotor slot coordination and winding topology, substantially augmenting low-velocity breakout torque and truncating startup lag-an invaluable attribute for machinery burdened with formidable initial rotational resistance, including large-scale water pumps and mining conveyors. For coupling assembly, precise axial centric alignment between the motor and driven apparatus is imperative to preclude extraneous vibrational excitation and accelerated bearing fatigue during variable-speed modulation.

The motor exhibits stringent environmental compatibility metrics: it functions seamlessly within an ambient thermal window of -15℃ to 40℃ and sustains full-rated performance at elevations under 1000m without power derating. Weighing 6870kg, it adopts the IM B3 horizontal mounting modality, streamlining foundation anchoring and seamless integration into industrial production lines. Pre-commissioning protocols must adhere to stipulations delineated on the unit's caution plaque: validate the rotational orientation of the 8-pole stator assembly, activate the air-water cooling circulation system, prime journal bearings with recirculated lubricant, and categorically proscribe energization under winding earthing faults to prolong the apparatus's operational lifespan.

For heavy-industrial facilities demanding steady medium-low velocity actuation amid variable load fluctuations, the ruggedized 750 rpm electric motor within the YJTKK portfolio distinguishes itself amid analogous high-voltage variable-frequency motors. It strikes an impeccable equilibrium between superior energy efficiency, formidable thermal dissipation, robust bearing integrity and broad frequency modulation bandwidth, comprehensively catering to the stringent demands of long-duration, uninterrupted heavy-duty industrial operation. Its sturdy mechanical architecture and minimal maintenance overhead have garnered universal acclaim from global industrial equipment integrators across diverse manufacturing sectors.

Main Technical Parameters

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

YJTKK 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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