RU94035347A - Induction motor - Google Patents

Abstract

FIELD: electrical engineering; metal-working, chemical, oil, gas, mine industries, power engineering, and transport. SUBSTANCE: squirrel-cage induction motor has its stator winding built up of naked bars made of oxidized aluminium, placed in slots, and shorted out with first aluminium ring. Second ends of bars are directly soldered to secondary windings of single-phase transformers made of naked oxidized aluminium conductors connected in star by means of second aluminium ring. Primary windings of mentioned transformers are wound of naked oxidized aluminium conductors with glass fabric interlayer insulation. Odd-numbered primary phase windings of transformers over ring are connected in star and grouped to be connected to three-phase supply mains; even-numbered ones are connected in delta and also connected to supply mains. EFFECT: enlarged functional capabilities. 1 dwg

Claims (1)

The invention relates to the field of electrical engineering and can be used in the metallurgical, chemical, oil, gas, mining, energy and transport. In an induction motor, the rotor winding is a well-known "squirrel cage", the stator winding is made in the form of bare rods of oxidized aluminum, laid in grooves and shorted by the first aluminum ring. The second ends are directly soldered to the secondary windings of single-phase transformers made of bare oxidized aluminum and connected to a star by means of a second aluminum ring. The primary windings of these transformers are wound with bare aluminum oxidized wire with interlayer insulation of fiberglass. Moreover, the odd phase primary windings of the transformers are connected to a star and connected in groups to a three-phase network, and even ones to triangles and also connected to this network.