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Variable Speed Compressors
- Low starting current
- High efficiency
- Minimises power wastage
- Energy saving
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Compressors equipped with an in-built Variable Frequency Drive (VFD), also referred to as Variable Speed Drive (VSD), matches the compressor output to the system air demand by varying motor speed, hence the power consumption of the compressor reduces in line with the reduction in demand. The VFD eliminates frequent load-unload cycles and minimises power wastage thereby reducing energy costs. For compressed air systems with fluctuating demand patterns the return on capital investment due to energy saved with an in-built VFD can be within a few months.
A fixed speed compressor operates on a load-unload band of at least 0.5 bar (g) around the working pressure whereas with VFD technology a compressor can be operated within a band of 0.1 bar (g). Since the compressor is not operated under higher than working pressure requirements, there is a substantial energy saving as approximately, for every 0.1 bar (g) reduction in operating pressure there is a 1% power saving.
EN Series: Models with VSD technology: EN5X V, EN7 V, EN11 V, EN15 V
EG Series: Models with VSD technology: EG11 V, EG15 V, EG18 V, EG22 V, EG26 V, EG30 V, EG37 V, EG45 V, EG55 V, EG75 V, EG90 V, EG90-P V, EG110 V, EG110-P V, EG132 V, EG132-P V, EG160 V, EG160-P V, EG200 V, EG250 V
OF Series: Models with VSD technology: OF55A V, OF75A V, OF90 V, OF90A V, OF110 V, OF110A V, OF135 V, OF135A V, OF145 V, OF145A V, OF170 V, OF170A V, OF200 V, OF210 V, OF250 V, OF265 V, OF275 V, OF300 V, OF400 V, OF450 V
AB Series: Models with VSD technology: AB30 V, AB37 V, AB45 V, AB55 V, AB75 V, AB90 V
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