An industrial fan should not be ordered with only a motor power value. Electrical supply affects motor design, speed, current, controls, and the fan operating point, especially when the destination uses a different frequency.
Provide the complete power supply
- Nominal voltage and acceptable variation
- Frequency, usually stated in hertz
- Single-phase or three-phase supply
- Required motor power and speed
- Starting method, controls, or variable-frequency drive
Check more than voltage
Confirm motor efficiency class, insulation class, enclosure or IP protection, ambient temperature, altitude, duty cycle, terminal arrangement, and any project-specific certification requirement.
Frequency can change fan performance
A different supply frequency may change motor speed and therefore airflow, pressure, and absorbed power. Do not assume that a motor marked for one voltage-frequency combination can be used unchanged at another. The supplier should confirm both the motor and fan performance for the destination supply.