Rotary Screw Air Compressors Variable Speed Drive Increase Energy Efficiency

Editor: Dr. Jörg Kempf |

Ingersoll Rand has introduced new models to its line of Next Generation R-Series compressors which incorporate the latest advancements in variable speed drive (VSD) technology to increase air flow output by up to 15 percent, reduce energy costs by up to 35 percent compared to a fixed speed and increase system reliability, the company says.

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The compressors are designed to withstand harsh plant conditions.
The compressors are designed to withstand harsh plant conditions.
(Source: Ingersoll Rand)

With the launch of the RS30n and RS37n VSD models, the engineers have designed a streamlined system which maximizes the latest advancements in rotor dynamics coupled with Totally Enclosed, Fan Cooled (TEFC) high-performance motors. At the heart of the compressor is the airend Ingersoll Rand designed to significantly improve overall system efficiency by ensuring low pressure drops. It delivers specific energy output and premier airflow capacity for each compressor application.

The compressors are designed to withstand harsh plant conditions and can run continuously in ambient temperatures of up to 46 °C. The starter panel meets Nema 12/IP54 protection ratings to provide protection against circulating dust, falling dirt, and dripping or splashing liquids.

In addition to matching output based on the demand, the RS30n and RS37n compressors also decrease energy use during start-up, which can draw up to 270 percent of the full load current. RS30n and RS37n limit the in-rush current during start-up, minimizing peak power charges and lowering energy usage.

All Next Generation R-Series air compressors are equipped with Xe-series controllers which allow easy access to, and control of, the compressed air system.