VSD Compressor Product NamePM VSD Screw Air compressor Model No.HWV-22A Motor Power22kw/30hp Working Pressure7/8/10/12 bar Start MethodVariable frequency soft start Free Air Delivery3.7/3.6.3.2/2.8 m3/min Dimension1380*850*1180 mm Weight518 kg Oil content8-12 liters Hengchaowin permanent magnet variable frequency screw air compressor(PM VSD SCRW TYPE AIR COMPRESSOR) is a combination of permanent magnet rare earth synchronous motor (PM motor) and high-efficiency inverter to achieve 20-30% energy saving than ordinary screw air compressors. The permanent magnet motor uses high-performance neodymium iron boron permanent magnets, no loss of magnetism at 200 鈩? and a service life of up to 15 years. In addition, the screw air end and the PM motor share the same main shaft. The motor has no bearings. The rotor with permanent magnets is directly mounted on the extended shaft of the male rotor, and the transmission efficiency is 100%. This structure eliminates the fault points of the traditional motor bearing and realizes the maintenance-free motor. The power from 7.5kw(10hp) to 315kw(355hp) How To Save Energy? 1. Hengchaowin PM VSD screw type air compressor has an automatic tracking system air consumption system, and uses PID (proportional, differential, integral) fangshi to precisely adjust the speed of the air compressor to keep the system pressure stable. 2. Using IE3 motor and adopts the frequency conversion soft start method, which greatly reduces the impact of the current on the machine when the air compressor is turned on, thereby saving energy and prolonging the service life. 3. It adopts high-efficiency, well-known brand inverter (Denmark HOLIP), which is more stable and energy-saving than ordinary frequency converters. Installation: Application: Certificate: Choosing us, we have: 1. 24/7 after sales service support in different languages; 2. Guidance of installation and commissioning on site can be provided by factory-trained technicians or local Authorized Service Center; 3. Technical training for customers in HENGCHAOWINO air compressor factory or working site; 4. Plenty of original spare parts with proven quality are all available from our central stocks in Jiangsu Province and all distributors'depots; 5. All kinds of technical documents in different languages. For brand, OEM is available.VSD Compressor website:http://www.hengchaowin-technology.com/rotary-screw-air-compressor/vsd-compressor/