Three-phase squirrel-cage medium voltage high efficiency motors series Sh 355-560 Catalogue 2010 sheet no. 26h

High efficiency MV motors 2/ 8 BASIC EXECUTION - GENERAL CHARACTERISTICS Three-phase squirrel-cage high voltage motors in finned frame are characterized mainly by very high degree of energetic efficiency. Thanks to compact and stiff frame construction motors have very low vibration degree and low noise level. The basic scope of production includes motors of mechanical sizes from 355 to 450 of rated power 160-1800kW. Series / Frame size Sh 355 Sh 400 Sh 450 Sh 500 Sh560 Voltage and frequency 6000V ± 5%; 50Hz ± 2% Duty type continuous, S1 Class of insulation F (VPI) Ambient Temperature -20°C …...

High efficiency MV motors 3/ 8 CHANGES IN AMBIENT AND SUPPLY CONDITIONS Rated motor load is specified at ambient temperature +40°C and operational altitude up to 1000 m above sea level. When temperature and / or altitude changes motors output should be corrected according to the below characteristics. BALANCING AND ALLOWABLE VIBRATION LEVEL Motors’ rotor is balanced with half-key installed in free shaft extension. Permissible vibration speed of uncoupled motor is 2,8 mm/s rms. BEARINGS 2 pole motors (3000rpm) of mechanical size 450, 500 and 560 are equipped with sleeve bearings of RENK AG make....