Classification of A.C. Motors

The classification of A.C motors is mainly showcased in 5 sections. They are:

Grouping as per speed

• Variable speed
• Adjustable speed
• Constant speed

Grouping as per asynchronous motors

1. Commutator motors:
2. Compensated

• Inductively
• Conductivity

1. Series

• Universal
• Single phase

1. Induction motors
2. External resistance or Slip ring
3. Squirrel cage

• Single
• Double

Grouping as per current type

• 3 phase
• Single phase

Grouping as per principle of operation

(Existing together)or Synchronousmotors

• Super
• Plain

Grouping as perstructural features

• Splash proof
• Riveted frame eye
• Fan cooled and totally enclosed
• Water proof
• Explosion proof
• Semi-enclosed
• Enclosed
• Open
• Pipe-ventilated
• Ventilated