Energy Conservation Techniques in Motor

Sr. No.

Case

Technique

1.

Motor running with 30%  loaded condition but sometimes rises to 50%
loading condition.

1. Convert to Y connection for lightly
loaded.

2. Use APFC or
IPSC for better p.f. improvement.  

3. Use cooling fans for motor.

4. If possible use low capacity motor.

2.

Motor running 70% in loaded condition.

1. Use APFC or IPSC for better p.f.
improvement.

2. Use cooling fans for motor.

3.

Motor runs continuously under no-load
condition.

1. Convert △ → Y for highly
loaded motor.

2. Switch off the
motor.

3. Use low capacity motor.

4. Use cooling fans for motor.

5. Use APFC or IPSC for better p.f.
improvement.

4.

Motor is continuously loaded at 50%

1.  Convert △ → Y for highly loaded motor.

2.Use cooling fans.

3.Use APFC or IPSC for better p.f.
improvement.