Permanent magnet variable-speed screw
Two-stage PM-VSD screw air compressors
Two-stage compression combined with an IE5 permanent magnet motor and variable-speed drive for industrial plant air.

The compression is split into two stages with cooling in between, and the whole air end is driven by an IE5 permanent magnet motor on a variable-speed drive. The result is a compressor built for continuous duty on industrial plant air.
- Two-stage compression + IE5 permanent magnet motor.
- Inter-stage cooling with oil-mist spray.
- Folded oil-separator element for a larger filtration area.
- Permanent magnet motor: no rotor copper loss, low inrush current, stable under frequent starts and stops.
- Neodymium-iron-boron permanent magnets; PTC thermal protection linked to the controller.
Series
- TVD+
- A Series
- SED / SED+
How it works
Air enters the first-stage chamber through the air filter, mixes with a small amount of lubricant and is compressed to the inter-stage pressure. The gas then passes through a cooling channel where it meets oil mist and its temperature drops substantially. The cooled gas enters the second-stage rotor for final compression and leaves through the discharge flange.
Specifications
Power ranges, pressures and model list: Contact us for specifications.
Certificates
Certificates available on request.
Certificates are valid for the models and scope stated on the original documents. For the current certificate for a specific model, please contact us, or see Certifications.
Related products
Tell us your flow, pressure and air-quality requirement
We will come back with a suitable configuration and the specifications you need. We reply within 2 business days.