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VSD Screw Air Compressor:, 1. Germany air end, 2. Double screw, 3. VSD screw air compressor, 4. Energy saving - details see: https://www.machineto.com/permanent-magnet-synchronous-vsd-screw-air-compressor-10210406

Permanent Magnet Synchronous VSD Screw Air Compressor:

Configurations:

Significant energy saving effect:
Permanent magnet synchronous variable air compressor is always running in the loaded state, no uninstall run phenomenon, and this no power wastage. Permanent magnet synchronous motor efficiency is very high compared with ordinary motor efficiency by at least 2%, with less power consumption and greater output torque, energy-saving effect is remarkable, fee energy consumption remained at the level of the most economical.

Introduction:
The permanent magnet synchronizing variable frequency compressor is a most recent compressor with excellent quality and high efficiency and energy saving at present. It is an advanced technique owned by only a few advanced countries and zones in the world. It is a high-end tendency for the future compressor development. The design concept and technical measure has broken through the tradition technical concept. It integrates the most sophisticated and energy saving technical factors.

Excellent quality of motors:
The permanent magnet synchronizing variable frequency compressor is equipped with high efficiency permanent magnet synchronizing motor (PM motor). Compared to normal motors, PM motor has smaller volume and more excellent energy saving. It will exert incomparable energy saving effect than normal inductive motor when installed with the special frequency converters. It uses high performance NdFeB magnets which will not loss magnet even at 120 degrees and service life can be up to 15 years. The stator winding can be of special corona resistant wire for frequency converters with excellent insulation performance. As the magneto conductivity of rotors is very high, the diameter is very small and able to be installed at the extending shaft of the male rotor, without use of bearing, thus eliminating the faults of motor bearing and improving the driving efficiency.

Air End:
The quality of air end of permanent magnet synchronizing variable frequency compressor is excellent. The advanced molded lines ensure the minimum specific power. It is designed in the FEM strength analysis, to ensure the stability and reliability of each part, and to realize long term operation with no faults, low noise and long life.

Strong support of frequency converter to compressor:
The permanent magnet synchronizing variable frequency compressor is equipped with special frequency converter with wider frequency converting rang. With the rapid development of techniques, the variable frequency compressor has become a high-grade machine int he energy saving area. It can realize maximum energy saving effect with the permanent magnet synchronizing motor.

The permanent magnet synchronizing variable frequency compressor is a competitive product among the high-grade machines.

Technical Data:

Model		ERC-30SA	ERC-30SW	ERC-50SA	ERC-50SW
Type of cooling		A-Air cooling W-Water cooling
Air delivery / Working pressure	m3/min/bar	0-3.2/8	0-3.2/8	0-6.2/8	0-6.2/8
Rotation speed	r/min	3900	3900	3600	3600
Variable frequency		0-66Hz	0-66Hz	0-62Hz	0-62Hz
Air delivery / Working pressure	m3/min/bar	0-3.2/10	0-3.2/10	0-5.7/10	0-5.7/10
Rotation speed	r/min	3500	3500	3200	3200
Variable frequency		0-60Hz	0-60Hz	0-54Hz	0-54Hz
Air delivery / Working pressure	m3/min/bar	0-2.8/12.5	0-2.8/12.5	0-4.6/12.5	0-4.6/12.5
Rotation speed	r/min	3200	3200	2900	2900
Variable frequency		0-54Hz	0-54Hz	0-50Hz	0-50Hz
Motor power	KW	22	22	37	37
Voltage	V/Hz	AC 380V/50Hz
Starting method		Variable frequency starting
Noise	dB(A)	72±5, tested according to the international standard GB/T4980-2003
Oil content of discharge air		<3 ppm
Outlet air temperature		Ambient temperature + 15 °C
Cooling air volume	m3/min	110		145
Cooling water volume	L/min		14.5		25
Pipe connection diameter		1”	1”	1 1/4”	1 1/4”
Dimension(mm)	L	1200	1200	1450	1450
	W	850	850	1000	1000
	H	1280	1280	1465	1465