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. Motors Sh series are of general industrial use. They are used for driving various machines and devices which work is of continuous duty without frequent starting and reversing. Because of protection degree motors can work in dusty environment. However the dustiness of air should not extend 10 mg/m3. Ambient air can not contain chemically aggressive contaminants like acid or lye fumes. Ambient air mustn’t contain also explosive mixtures or very fine dust particles.
Motors can work in fast-switching automatic standby power systems. They can be restarted at 100% residual voltage and at full opposition of phases.
For outdoor operation it is recommended to place the motor under a roof protecting it against rain, snow and sunlight
