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Energy Savings Example |
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Drives provide additional savings by reducing the speed of the motor and therefore the horsepower required to operate. Additional savings will also be received due to longer motor life, improved power factor, reduced noise and greater flexibility. |
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VFD Features and Benefits |
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- Reduction in system energy losses
- Savings pays for the install cost
- Additional rebate programs for drive
- Less mechanical wear & longer component life
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Energy Efficiency Example |
| Horsepower: |
100 |
| Electrical Cost: |
0.08 $/kWh |
| Run Speed: |
80% Flow Volume |
| Hours of Use: |
6,000 Hours / Year |
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System
Premium |
Annual
Operating Cost |
Annual
Cost Savings |
| Standard-E Motor: |
94.5% Efficient |
$0 |
$34,700 |
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| Super-E Motor: |
95.4% Efficient |
$900 |
$33,450 |
$1,250 |
| VS1SP AC Drive: |
98% Efficient |
$7,600 |
$23,090 |
$11,610 |
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Energy Savings Equations |
| Kilowatts: |
Hp x 0.746 [1 / SYSEFF] |
| Energy Cost : |
Kilowatts x Hrs/Yr x $/kWh |
| HP: |
Motor full load horsepower |
| Hrs/Yr: |
Number of hours per year in operation |
| $/kWh: |
Cost of electricity per kilowatt hour |
| SYSEFF: |
System Efficiency |
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Click here to return to the AC Drives overview page.
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