Tech Tips

1. Tech Tips Induction vs. ECM Motors with Pumps in variable flow applications

2. M Standard AC Motor Family of Performance Curves P R % f f E s p m A s t t a W

3. M P Motor/Rotor with Control R % f f E s p m A s t t a W

4. M P R % f f E s p m A s ECM Motor With Magnetized Rotor and Control t t a W

5. ) . t f ( d a e H Standard AC Motor Now with Pump Attached M P R % f f E s p m A s t t a W 2 4 6 8 10 14 16 18 20 22 GPM

6. Constant Speed Curve H(ft) P (W) Q (GPM)

7. Constant Speed Curve H(ft) P (W) Q (GPM)

8. Constant Speed Curve – Induction Motor 35 H(ft) 27 20 11.5 P (W) 50 80 110 140 Q (GPM)

9. Constant Speed Curve – Induction Motor 35 Eff. 36.7 % 1.1 kW H(ft) 27 Eff. 44.0 % 1.14 kW Eff. 39.9 % 1.21 kW 20 Eff. 25.1 % 1.22 kW 11.5 P (W) 50 80 110 140 Q (GPM)

10. Constant Speed Curve – ECM Motor 35 Eff. 54.9 % .6 kW H(ft) 27 Eff. 67.0 % .61 kW Eff. 66.2 % .61 kW 20 Eff. 48.6 % .61 kW 11.5 P (W) 50 80 110 140 Q (GPM)

11. Constant Speed Curve – Induction vs. ECM Motor Savings of 54.5% H(ft) Savings of 53.5% Savings of 50.4% Savings of 50% P (W) Q (GPM)

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