The voltage and the frequence are in accordance with DIN/EN 60034-1. Within the first range, voltage has a maximum deviation of +/- 5% and frequency +/- 2%; within the second range the deviation of voltage is +/- 10% and frequency +3/-5 %. Electric motors are marked according to the IE2 standard:
- 230V / 400V 50Hz bzw. 265V / 460V 60Hz
- 400V / 690V 50Hz bzw. 460V / 795V 60Hz
Electric motor isolation
Standard electric motors have an isolation class of “F”.
In order to run the electric motors at constant rated power according to DIN/EN 60034-1, the electric motors need to be powered at the constant frequency of 50 Hz, be maintained within the temperature of -20 to +40 °C and not higher than 1000 m above sea level.
All electric motors are built in accordance with the IP 55/g DIN/EN 60529 protection class standard.
Electric motors with aluminium casing are built from die-cast aluminium, iron casing from cast iron. The position of the junction box can be changed with the help of the mounting feet (bolted mounting feet sizes 56-132).
Rotor of the electric motor is dynamically balanced; the level of vibration is in accordance with EN 60034-14 standard.
The ball bearings of the electric motors are high quality (manufactured by FAG, SKF, NSK, NTN, INA). Guaranteed 40 000 hours of operation through clutch, without physical force placed on the axis. Guaranteed 20 000 hours of operation with horizontal positioning and maximum stress allowed placed on the axis.
Electric motors are equipped with cooling fans that work regardless of the axis spin direction (IC 411 according to EN 60034-6). Cooling fan cover is made from steel sheet..
Electric motors are painted with RAL 7030 (gray). The lacquer is optimised for the usage within temperate climate range (IEC 721-2-1), both for indoors and outdoors usage.
Electric motors with aluminium casing are equipped with removable mounting feet, each of which is fastened with two screws. The screws mentioned are adjustable, which allow to change the placement of the junction box (left or right).