High-power high-voltage motor belongs to Y series. The Y series is a range of large-sized high-voltage three-phase asynchronous motors. We've engineered them using advanced technology from home and abroad. They comply with IEC standards and GB755, with F-class insulation (and Class B temperature rise).
It comes with a 50Hz rating (60Hz customizable) and 3kV/6kV/10kV voltages (other options available). It works in temperatures between -15℃ and 40℃, at altitudes no higher than 1000m, and supports S1 continuous duty. Cooling methods depend on the sub-series-either IC01 or IC611-with protection levels up to IP54. It's widely used in mines, petrochemicals, and power plants, driving compressors, pumps, fans, and conveyors. It offers reliable, long-lasting performance, with flexible installation (standard IMB3 horizontal) and optional temperature monitoring. Below is an introduction to its internal structure.
1.Squirrel cage rotor
This high-power high-voltage motor uses a cast aluminium rotor. We use centrifugal casting: molten pure aluminium is poured into the rotor core slots. This one-piece casting process fuses the conductive bars and end rings into a single structure. Thanks to this design and manufacturing method, the rotor is incredibly reliable-and it delivers great torque performance too.
2.Reliable Bearing Construction
Bearings are available in rolling and plain types. Electric motors usually use rolling bearings. But if operating conditions-like rotational speed, load capacity, or service requirements.Go beyond the specified limits, plain bearings are used instead. Standard design motors H500-2 (3kV, 6kV, 10kV) and H560-2 (3kV, 6kV, 10kV) employ end-cover spherical plain bearings with forced lubrication. The H500-2 may also be configured with self-lubricating plain bearings. All other motors utilise rolling bearings and incorporate non-stop oil injection and drainage systems.
The rolling bearing structure employs a dual-bearing configuration. The rolling bearing assembly has components like an end cover, bearing sleeve, outer cover, bearing, oil-throwing ring, water-blocking ring, uninterruptible oil injection/drainage system, and bearing temperature monitoring device. Lubrication options are an oil-filling cup or lithium-based grease. Every assembly features V-type seals that block dust and water ingress, ensuring longer service life and extended lubrication intervals. The theoretical bearing life of high-power high-voltage motor, based on calculations, exceeds 100,000 hours.
Sliding bearings are generally selected based on operating conditions or user requirements. The bearing structure comprises a thrust cover, end cover, bearing bushings, and bearing temperature monitoring devices.
Depending on the load conditions, either natural cooling via heat radiation and conduction with an oil ring self-lubrication system, or forced lubrication may be employed. The self-lubrication method can be readily converted to forced lubrication without any modifications.
Both the drive and non-drive ends employ end-cover spherical plain bearings, with the non-shaft-extension end bearing incorporating insulation. The permissible axial movement in the free state is +5mm. Under these conditions, the motor rotor and shaft assembly must be axially positioned via a 'limit device' fitted to the driven equipment.
3.VPI Vacuum Pressure Impregnation
The insulation system employed in our company's high-power high-voltage motors has been proven over many years. Integrating new experience with modern manufacturing techniques and technologies, we have progressively increased the proportion of mica. This insulation system continues to evolve and improve. We equip the stator windings with Class 155 (F) insulation. The coil ends are securely fixed and bound. In production, they pass multiple inter-turn impulse voltage tests and withstand voltage tests to ground. On top of that, there's VPI vacuum pressure impregnation-a solvent-free process.
This results in high electrical strength, mechanical robustness, and excellent corrosion and moisture resistance. The coil core undergoes specialized anti-corona treatment, which allows for safe operation at higher altitudes
Low-loss, high-efficiency silicon steel laminations are employed for the stamped core, reducing losses while enhancing motor efficiency and operational reliability.
The magnetic slot wedges are selected. With suitable magnetic slot wedges, iron loss drops by an average of 20%. Efficiency increases by over 0.3%, the power factor improves, and the stator temperature rise decreases too.
4. Lifting and Safety
For safe handling and installation of high-power high-voltage motor, you need to fit two lifting rings diagonally across the base frame.These lifting rings spin a full 360°, and their hinges can rotate 180°-they automatically adjust to the direction the lifting rope pulls.
The base feet feature lifting bolt holes for installation, enabling height adjustment during motor mounting.
Large-section earthing terminals are provided on both sides of the base bottom and both inside and outside the terminal box.
For more information, please contact us as follows:
Hot Tags: high power high voltage motor, China high power high voltage motor manufacturers, suppliers, factory, high voltage motor for motor drive, high voltage motor for motor engineering, high voltage motor for motor housing, high voltage motor for motor resistor, high voltage motor for motor safety, high voltage motor for motor shipping
