GHS 350 VSD+ 3Ph 380-460 V 50/60 Hz, air-cooled, synthetic oil, 7" HMI, IE4 motor; built in Qingdao, no CE/UL marking

Atlas Copco GHS 350 VSD+ – variable-speed screw pump with HEX@ controller

The GHS 350 VSD+ achieves a nominal pumping speed of 400 m³/h (data sheet: maximum displacement 483 m³/h) and an ultimate pressure of 0.35 mbar(a). The motor is rated at 5.5 kW; the frequency converter works in the range 20–116 Hz (600–3500 rpm at the motor shaft). All four sizes share the same canopy of 1266 × 934 × 1083 mm (L × W × H); according to the brochure the GHS 350 VSD+ weighs 495 kg (data sheet: 500 kg air-cooled, 568 kg water-cooled). The gas inlet is DN 80, the gas outlet DN 60. According to the brochure the noise level lies between 51 and 65 dB(A); the oil capacity is 16 l.

Only as much power as needed

The pump delivers the lowest possible flow and follows the vacuum actually required. Atlas Copco quotes potential energy savings of 50 % or more compared with conventional fixed-speed vacuum technologies, with a control range of 10 to 100 %. The HEX@ controller allows remote monitoring and multi-pump operation via HEX@GRID; since March 2026 Atlas Copco supplies the GHS 350–900 VSD+ built in Qingdao with the Genius Box for remote monitoring as standard.

Applications of the series

Atlas Copco recommends the GHS 350–900 VSD+ for applications in plastics, glass, bottling, canning, wood, packaging, printing and paper as well as meat packaging.

Versions of the GHS 350 VSD+

Ehrler & Beck offers the GHS 350 VSD+ in 29 versions. The 12 article numbers with the prefix 8153 come from the Antwerp plant and carry the CE marking (IEC, UL/cUL); they differ in oil (mineral, synthetic or food-grade oil), operation (controls on the front panel or 7" HMI touchscreen), Humid version for processes with a high water vapour content (always with synthetic oil), stainless steel version and version with test report. The 5 article numbers with the prefix 1950 8138 are the versions with IE4 motor built in Qingdao since June 2024 (air- or water-cooled, mineral or synthetic oil, standard or Humid); the 12 article numbers with the prefix 1950 8134/8135 are the Qingdao versions with IE3 motor that Atlas Copco has been phasing out since 2024. According to Atlas Copco the pumps built in Qingdao carry no CE/UL marking. All versions are designed for 3Ph 380-460 V 50/60 Hz; 220 V and 575 V are available on request according to the brochure.

Features of the GHS 350–900 VSD+

• Variable speed drive (VSD+) with a control range of 10 to 100 %
• HEX@ controller with remote monitoring; multi-pump operation via HEX@GRID
• Oil carry-over below 3 mg/m³
• Air-cooled standard version; water-cooled versions from Qingdao (cooling water demand per data sheet 10 l/min, connection DN 80 PN 6)
• Plug-and-play installation on a small footprint
• Electrical cabinet IP54, CSA/UL (Antwerp)

Pumping speed 50Hz	400
Pumping speed 60Hz	400
Ultimate pressure	0.35
Rated motor power 50Hz	5.5
Rated motor power 60Hz	5.5
Motor efficiency class	IE4
Weight	495
Length	126.6
Width	93.4
Height	108.3
Inlet connection flange	DN 80
Outlet connection flange	DN 60
Noise level	65 dB(A)
Cooling method	Air cooling, Water cooling
Oil type	VACUUM FLUID BASIC

Additional technical data