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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | m | | | | | | | | | | Paint finish | | | | | | Three-phase motors with squirrel-cage rotor, Transnorm version with surface ventilation, cooling method IC 411, degree of protection IP 55 | | | | | | | | | | aggressive atmospheres (chemical industries, sea environments) short-time up to 100 % relative air humidity at temperatures up to +35 °C, continuously up to 98 % relative air humidity at temperatures up to +30 °C. Finish system Size 56 - 112 - prime plastic paint, layer thickness > 30 um - finish coat 2K-varnish with layer thickness > 60 um Size 132 - 355 - prime coat plastic resin/zincphosphate, layer thickness > 30 urn - second coat on separate application base, layer thickness > 30 um - finish coat 2K-(separate-application)-polyurethane varnish, layer thickness > 30 um Standard colour RAL 7031 blue-grey Additional special coating systems - versions for excessive thermal stresses - versions for excessive chemical and radiation stresses - systems on customer's request | | | | | | Normal finish • adapted for group of climates 'moderate' acc. to IEC 721-2-1 Weather protected and non-weather protected locations, open-air-conditions, short-time up to 100% relative air humidity at temperatures up to +30 °C, continuously up to 80% relative air humidity up to +25 °C. Finish system Sizes 56 - 112 - all components except plastic parts (terminal box, fan cover) and aluminium terminal cases: prime plastic paint, layer thickness > 30 urn - finish coat water-soluble varnish with layer thickness > 30 urn - special version 2K-varnish, layer thickness > 30 urn Sizes 132 - 355 - prime coat plastic resin/zincphosphate, layer thickness > 30 um - finish coat 2K-(separate-application)-polyurethane varnish, layer thickness > 30 um Special finish • adapted for group of climates 'world wide' acc. to IEC 721-2-1 Non-weather protected locations, open-air-conditions, in | | | | | | | | | | | | | | Pole-changing motors | | | | | | | | | | Pole-changing motors are according to the load torque char-cteristics of driven machines designed for - drives with a constant load torque and - drives with a quadratically increasing load torque. The intended application is stated in the motor selection data list. The motors can only be designed for one operating voltage, e.g. 230 V 400 V or 660 V and are generally for direct connection via the pole sequence. 60 Hz version and special voltages according to IEC 38 are possible | | - two separate windings, both in a Dahlander circuit, e. g. 12-8-6-4 poles Whereas with the winding in a Dahlander circuit it is only possible to have a speed ratio of 1:2, two separate windings offer other speed variations, but with lower outputs in relation to the same basic version. Y or A circuits are used for separate windings, A/YY or Y/YY for windings according to the Dahlander principle. | | | | | | | | | | | | | | Pole-changing is achieved by - two separate windings in the stator, e. g. 6-4 poles - one winding in a Dahlander circuit, e. g. 8-4 poles | | The following circuits are obtained with the individual variations in the number of poles: | | | | | | | | | | | | | | | | | | | | | | Number of poles | Circuit | Basic version21 | | | | 4-2, 4-2L | A/YY, Y/YY | 4pole1) | | | | 8-4, 12-6 | A/YY | 6pole | | | | 8-4L, LF | Y/YY | 4pole | | | | 6-4 | Y/Y, A/A | 6pole | | | | 6-4LF, 6-4L | Y/Y, A/A | 4pole | | | | 8-4-2 | Y/A/YY | 6pole1) up to K11R 160M | | | | 8-4-2 | Y/A/YY | 4pole1) up to K11R 160L | | | | 8-6-4 | A/Y/YY | 6pole | | | | 12-8-6-4 | A/A/YY/YY | 6pole | | | | | | | | | | | | | | | | | | From K21R 132, these motors have the 2pole ventilation system. not always for K21R 63-112 | | Star-circuit for the highest pole number (lowest speed) is possible, if the operation circuit is A. Other pole number combinations are also possible. | | | | | | | | | | 19 | | 20 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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