Variable Speed Screw Air Compressor
BESTRAND develops its variable speed screw compressors to be high energy efficiency. At full load, the variable speed compressors will produce the most air using the least energy. Even more important,
BESTRAND will guarantee these efficiencies down to loads as low as 25%. A conventional , fixed-speed air compressor is controlled by a suction control valve that modulatesbetween open and closed positions. But using the suction valve to meet system air demand results in extreme pressure fluctuations and wasted energy, greatly reducing efficiency whenever the compressor operates outside its optimum performance range. Using a frequency inverter and the variable-frequency motor, BESTRAND compressors deliver the only true variable speed drive. With a true VSD, air is delivered at a constant pressure, regardless ofdemand, at maximum efficiency. Remarkably, BESTRAND compressors achieve constant pressure and maximum efficiency across their entire operating range, from 100% loaded down to as low as 25% loaded.
Frequency changer advantages
Reduce the motor working voltage and realize the energy-saving effect under small
gas consumption by reducing the operating frequency.
Reach the balance quickly by increasing or decreasing the operating frequency.
Under large consumption, air compressor can achieve maximum rated discharge
capacity; Ifsmall, it can reduce exhaust emission that is still enough users.
Motor starts smoothly, little impact on the power grid, small damage on motor itself.