Forced-Cooled Motors
Omega forced-cooled motors: IE3 / IE4 three-phase motors with an independent fan for inverter-driven variable-speed duty, frames 80–355.
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- Brand
- Omega Motor
- Product group
- Electric Motors
In Omega forced-cooled motors cooling is provided by a separate fan that runs independently of the motor shaft. In variable-speed drives, the shaft-mounted fan does not cool enough at low speed, while at high speed fan losses and noise increase. An independent fan keeps cooling steady across the whole speed range.
They are available for all standard outputs from frame 80 to 355 in efficiency classes IE3 and IE4. The aluminium series can run on a drive without additional measures; in the cast iron series an insulated non-drive-end bearing or end shield is used from 110 kW upwards.
Applications
- Variable-speed (VFD) applications
- Conveyors
- Lifting equipment
- Geared drives
- Mixers and mills
- Pumps, fans and compressors
Custom manufacturing options
- Aluminium series: frames 80–225, inverter-ready without extra measures
- Cast iron series: frames 160–355
- Insulated NDE bearing or end shield from 110 kW
- Combination with encoder and brake
Technical specifications
- Efficiency class
- IE3 / IE4 (IEC 60034-30-1)
- Frame sizes
- 80 – 355
- Power range
- 0.55 – 500 kW
- Number of poles
- 2 - 4 - 6 - 8
- Cooling
- Independent fan (IC 416)
- Frequency
- 50 / 60 Hz
- Protection class
- IP55 (IP56, IP65 optional)
Related products
Standard Motors
Omega IE3 and IE4 squirrel-cage three-phase induction motors in frames 80–355, 0.55–500 kW, for direct-on-line (DOL) operation.
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Compact Motors
Omega compact motors: IE3 three-phase motors delivering the standard rated output in one frame size smaller, frames 80–315, 1.5–250 kW.
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Single-Phase Motors
Omega single-phase motors: permanent-capacitor designs for low vibration and noise, frames 80–112, 2 and 4 poles.
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Brake Motors
Omega brake motors: IE3 / IE4 three-phase motors with a spring-applied DC brake at the non-drive end, frames 80–250, 0.55–55 kW.
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