METHOD AND DEVICE FOR CONDUCTING TESTING OF CAST WINDING OF ROTOR OF ELECTRIC ENGINE Russian patent published in 1995 - IPC

FIELD: electric engineering. SUBSTANCE: U-shaped magnetic circuit provided with winding is disposed at side surface of the rotor fastened at centers in plane being perpendicular to its axis in such a manner that side cores of magnetic circuit are disposed in opposition to teeth of rotor. Winding of magnetic circuit is brought into interaction with rotor and quality of rotor winding is measured according to reactor of the winding. Pitch of side cores of magnetic circuit is chosen to be equal to two pitches of grooves of the rotor; then rods and teeth are engaged. After that, all the teeth of the rotor are brought into interaction. Yoke of magnetic circuit is made in form of an arc. Side rods are removable and mounted for movement along the yoke. EFFECT: improved truth of testing of cast squirrel cages. 2 cl, 1 dwg