Marathon Motors
Replacing older motors in air handlers, pumps, and similar applications with highly efficient motors can save energy costs and improve equipment reliability.
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Marathon Motors
High efficiency permanent magnet (PM) motor compatible with appropriate variable-frequency drives (VFD).
Hub Highlights:
- Low noise
- Good efficiency at lower loads
- Compatible with more types of variable-frequency drives (VFD)
Last Edited on: March 31, 2023
| Drive Manufacturer | Schneider |
| Drive Model Number | ATV930 D11M3 |
| Date of Test | May-22 |
| Testing Results: | "System" includes the motor drive and motor itself. Airflow test points were chosen to assist users estimate fan energy savings in HVAC equipment. See picture for full results. Tests accurate within ±0.2% |
| System Efficiency at 100% Airflow | 89.5% |
| System Efficiency at 90% Airflow | 89.8% |
| System Efficiency at 80% Airflow | 89.0% |
| System Efficiency at 65% Airflow | 86.9% |
| System Efficiency at 50% Airflow | 81.2% |
| System Efficiency at 30% Airflow | 62.9% |
| Motor Efficiency at 100% Airflow | 93.2% |
| Motor Efficiency at 90% Airflow | 93.6% |
| Motor Efficiency at 80% Airflow | 93.1% |
| Motor Efficiency at 65% Airflow | 92.4% |
| Motor Efficiency at 50% Airflow | 90.1% |
| Motor Efficiency at 30% Airflow | 84.7% |
