High Voltage Three Phase Asynchronous Motors

The designing, manufacturing and testing of medium & high voltage squirrel cage induction motors supplied by EMT are according with IEC standard, we supply high quality cast iron and steel fabricated motors with high performance and good appearance, they are widely used in various industries, like mine, pump, compressor, wind machinery etc.

Product Range:
T20 TEFC cast iron frame, 6kV IP55, IC411, 2141618PoIe, output 185kW-1600kW, frame size 355--56013kV, 33kV, 6.6kV on request.
T21 TEFC cast iron frame, 10kV IP55, IC411, 2/4/6/8Pole, output 220kW - 1400kW, frame size 400-560.
T30 TEFC steel fabricated frame, 6kV IP44 IP55, air-air cooling (IC611) or air-water cooling, 2/4/6/8/10/12 Pole, output 185kW - 2240kW, frame size 355 - 630.
T31 TEFC,10kV IP44 IP55, air-air cooling (IC611) or air-water cooling, 2/4/6/8/10/12 Pole, output 200kW - 1400kW, frame size 400-630.
T40 steel fabricated frame, ODP, 6kV IP23, IC01, 2/4/6/8/10/12 Pole, output 185kW - 2800kW, frame size 355 - 630.
T41 steel fabricated frame, ODP 6kV IP23, IC01, 2/4/6/8/10/12 Pole, output 185kW - 2240kW, frame size 400-630.

Basic:
Protection Class:IP55 IP44 IP23
Cooling Method: IC01 1C411 IC611
Mounting Type: B3, B35, V1
Duty: 51

Ambient:
Ambient temperature -20-40'C
Ambient relative humidity less than 90%
Altitude:less than 1000m above sea level
Ambient condition: no causticity gas, no dust, no heavy metal pollution, no flame,no salty,no crystal.

Application:
Supply Power:Voltage variable f 10% frequency variable +5% combined voltage and frequency variable +5%.
2 pole motor is only used in coupling direct drive.
Motors can rotate in both directions (except for 2 pole motor).
Starting Method: direct start at full voltage, or start by no less than 85%full voltage.

The following as options on customer's request:
Space Heater
Vibration Detector
Special Mounting dimension and special shaft-end dimension
Low vibration and low noise
Bearing thermometer PT100
Winding thermometer PT100
Special Coating
Others

Information for ordering:
Please specify the rated output synchronous speed, voltage, frequency, mounting type, rotation (from shaft extension). If any special requirement for example, non-standard output, non-standard voltage, non-standard frequency, non-standard mounting dimension, non-standard altitude, special ambient, high locked-rotor torque, second shaft-end, water cooling, vertical mounting, very big axial force and etc, please specify when in enquiry.

EMT has a strong R&D team, and has extensive experience, after long time to validate and improve calculation program combining with perfect Quality Assurance System, the designing value and actual data are highly match each other (for example, electromagnetic calculation, intension calculation, rotor critical speed calculation and so on), all the above ensures the product performance of the new designing motor can meet the customers' demand.

EMT applies high quality cast iron or steel plate, optimize the construction design to ensure the requirement of the rigidity and intensity of the construction.

Cold-rolled lamination steel is used in stator core and rotor core, it has advantage of good insulation on surface, low loss which ensures the higher efficiency.

High quality mica tape as insulation material with VPl (Vacuum Pressure Impregnation) combining the perfect insulation system which making the insulation completely and without clearance, high rigidity of the winding end, it can endure switching and reversing intensity,F class insulation makes the motor with higher heat stability and longer service life.

In general, we make copper bar rotor and copper end ring as the construction of the squirrel cage, and use high quality silver soldering for connecting the copper bar and end ring to prevent fatigue failure, meanwhile lower the loss and improve the efficiency.

The rotor balancing technology including static balance, dynamic balance, overall balance in operating, all EMT motors are matching or better than vibration requirement of the International standard, the rotor balancing has an inseparable relationship with the life of bearing.

The bearing and motor construction designing are made after considering the motor type, force on the motor, speed, lubricate type, including roller bearing and sleeve bearing, designing of oil seal and lubricant, it has advantage of credible performance and easy maintenance. Regreasing can be done during running.

Perfect primer ensures the motors with good appearance and the motors are durable, the standard coating color is RAL7031, and we can also use special corrosion protection coating.

QC, We have experienced employees to make sure the quality management system, for example, visual inspection, inspection during manufacturing and so on, we make sure that every process can be in professional control and managing for the production quality, first class professional equipment and constant trained employees make every production process in high quality, Our perfect after-sales service team and excellent engineering team to be a strong back for our product.

Test, routine test and type test according with the International standard to ensure the quality of the products.