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The MCSA Interpreter® gives you Key Knowledge on Shorted Turns Case Histories          

Faulty Stator

Case History ST1
3-ph, 415 V, 50 Hz, 14.75 h.p./11 kW, 20.5 A, 1440 r.p.m., SCIM (Squirrel-Cage Induction Motor), One/Two Shorted turns in one coil, short circuit current limited - no failure, 3-Tier Random wound concentric 4-pole winding.

Case History ST2
3-ph, 415 V, 50 Hz, 14.75 h.p./11 kW, 20.5 A, 1440 r.p.m., SCIM Induction Motor, 20% Shorted turns in one coil, 3-Tier Random wound concentric 4-pole winding prior to failure and burn out.

Case History ST3
3-ph, 415 V, 50 Hz, 14.75 h.p./11 kW, 20.5 A, 1440 r.p.m., SCIM Induction Motor, Shorted coil, Lap wound 4-pole winding prior to failure and burn out.

Case History ST4
3-ph, 415 V, 50 Hz, 5.4 h.p./4 kW, 3490 r.p.m., SCIM, Induction Motor, Shorted coil, 3-Tier Random wound concentric 2-pole winding, prior to failure and burn out.

Case History ST5
3-ph, 415 V, 50 Hz, 14.75 h.p./11 kW, 20.5 A, 1470 r.p.m., PWM SCIM Induction Motor, Shorted coil - current limited to prevent burn out, Lap wound 4-pole winding.

 

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