NOBEL Variable Speed Industrial Compressors
Compare 7.5–90 kW variable speed rotary screw compressors, including standard VSD and permanent magnet models with outputs from 21 to 562 CFM.
Choose the Right NOBEL Variable Speed Configuration
Start by deciding whether your site already has a suitable receiver and dryer, or whether these should be included as part of the compressor package.
Floor Mounted
Best where a suitable receiver and air-treatment system already exist or will be specified separately.
Floor Mounted + Dryer
Useful where an existing receiver can remain in service but integrated moisture reduction is required.
Receiver Mounted
A combined compressor and receiver package for sites that need local air storage without an integrated dryer.
Receiver + Dryer
The most complete package, combining variable speed compression, air storage and refrigerated drying.
NOBEL Variable Speed Series - Floor Mounted
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NOBEL Variable Speed Series - Floor Mounted with Dryer
View CategoryNOBEL Variable Speed Series - Receiver Mounted
View CategoryNOBEL Variable Speed Series - Receiver Mounted with Dryer
View CategorySee the NOBEL Variable Speed Series in Action
Quick overview of the range, key features, and what to expect from the NOBEL Variable Speed Series.
NOBEL Variable Speed Compressor Buying Guide
The NOBEL range covers two distinct variable speed technologies. The smaller 7.5–15 kW models use standard variable speed drive control, while the larger 18.5–90 kW range uses permanent magnet motor technology.
| Range | Power | Best Suited To | Key Difference |
|---|---|---|---|
| Standard NOBEL VSD | 7.5–15 kW | Workshops and smaller industrial systems with variable demand | Direct-drive variable speed control |
| NOBEL PM VSD | 18.5–90 kW | Larger production and industrial compressed air systems | Permanent magnet motor for high part-load efficiency |
When does a NOBEL VSD compressor make sense?
It is strongest where compressed air demand changes throughout the day. The compressor can reduce motor speed when less air is required instead of repeatedly running fully loaded and then off-load.
What is the difference between standard VSD and permanent magnet VSD?
Standard VSD models use variable speed control with a conventional motor, while the larger PM range uses a permanent magnet motor designed for high efficiency across a broad operating range.
Is variable speed always the best choice?
No. A correctly sized fixed-speed compressor may suit a site with stable, continuous demand. Variable speed is most valuable where demand genuinely changes.
How should I size the correct compressor?
Select from required free air delivery, working pressure, simultaneous demand, daily running hours, leakage and sensible future growth. Do not choose from kW alone.
Which pressure should I choose?
Choose the lowest pressure that reliably supports the application after losses through dryers, filters, pipework and regulators. Unnecessary pressure increases energy use.
Does a receiver increase the compressor's CFM?
No. A receiver stores compressed air and helps manage short demand peaks, but it does not increase the compressor's continuous delivered airflow.
What installation checks are required?
Confirm electrical supply, ventilation, service clearance, receiver capacity, dryer and filtration requirements, condensate management and pipework sizing.
NOBEL Variable Speed Compressor FAQs
What power range is available?
The NOBEL variable speed range covers 7.5 kW to 90 kW.
What configurations are available?
The range includes floor-mounted, floor-mounted with dryer, receiver-mounted and receiver-mounted with dryer options.
What is the difference between the smaller and larger NOBEL VSD models?
The 7.5–15 kW models use standard VSD technology, while the 18.5–90 kW models use permanent magnet motor technology.
Can Compressed Air Systems UK install and service NOBEL compressors?
Yes. Installation, pipework, commissioning, planned servicing, repairs and ongoing technical support are available subject to the equipment and site.
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