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High-quality medium-voltage motors

These large industrial motors are available up to 40,000KW and are operated with medium voltage. As a rule These are usually customised motors that are manufactured according to customer specifications. The number of pole pairs is between 2 and 20 poles. The degree of protection is available in the ranges IP23, IP55 to IP65.

Medium-voltage motors with air cooling

Medium-voltage motor with air cooling

Medium-voltage motors - cooling types

IC 411, fin-cooled
IC 611, with air-to-air heat exchanger
IC 81W, with air-water heat exchanger
IC 01, through-ventilated



Slip ring rotor - Medium-voltage motors


Slip ring rotor - Medium-voltage motor

Common nominal voltages

50 Hz: 2000V / 3000V / 3300V / 5000V / 5500V / 6000V / 6300V / 6600V / 10000V / 10500V / 11000V
60 Hz: 4160 V / 13800 V. The permissible voltage tolerance is ± 5%. Special voltages and voltage tolerances are available on request.

Tests

The following optional motor tests are carried out at the factory:
High-voltage test, direction of rotation check, winding resistance measurement, insulation resistance test, No-load test, short-circuit test, vibration severity measurement, shaft voltage measurement, functional check of accessories, noise measurement, visual inspection and documentation. Full load test if required, Heating test, shock pulse test and dissipation factor measurement are possible.

Rib-cooled medium-voltage motor with terminal box on top
Motor protection / monitoring
The high-quality medium-voltage motors can be supplied with temperature monitoring for winding and bearing e.g. 6 x Pt100 resistance thermometers in the stator winding and 2 x Pt100 Resistance thermometers in the A + B side bearings. The connection terminals of the thermometersare designed in a separate terminal box. In addition, a wide range of further Sensors are available on request. Most of the motors are supplied with a standstill heater.

SEO=Individual medium-voltage motors