22-75 kW   7,5-8,5-10 bar  1,03-16 m³/min


Oil Injected, Two-Stage, Direct Coupled, Variable Speed

Rotary Screw Air Compressors

Next gen compact compressors maximize your energy saving, minimize your total cost of own.

 General Features 

 IE5 efficiency-class IPM electric motors

 Two-stage screw block

 Water cooling (37 kW and above)

 Soft start with variable speed power transmission

 Operating with low noise level

 Integrated dryer (optional)

 Heat recovery (optional)

 Screw Block

Two-stage screw produces energy efficiency by up to 10%

Higher flow rate by up to 10%.

Thanks to low compression rate low axial and compression forces

Zero transmission losses by compact direct power transmission

No requirement for a power transmission element results in a compact design

Low axial and compression forces due to low compression ratio between screw blocks

Thanks to low rotor speeds, a long service life

Thanks to two-stage compression, low noise and vibration levels

 Electric Motor

Ultra Premium IE5 energy efficiency-class electric motors

• Internal Permanent Magnet Motor (IPM)

• Compact design

• F-class insulation

Optimum oil cooling at all speeds for high efficiency

Low noise levels

Grease-free lubricated motor bearings


 Electric Motor Drive

The drive and IPM meet the requirements of IES2 (EN50598)

Functionality in a single unit

Uses fewer components

Long service life helps minimize environmental impact.

 Oil Filter

Non-metallic, environmentally friendly and recyclable oil filter

Aluminium housing

Easy maintenance

Compact design


 Water Separator

• Compact, integrated, and unique design

• Separation performance is %99 even in very hot and humid conditions

High energy efficiency with minimal pressure loss

 Air Filter

Two-stage filtration (Initial filtration/precision filtration)

99.9% efficiency in particle separation down to microns

Low pressure loss (starting pressure fall<3mbar)

Easy maintenance

Long service life


 Cooling System

• High cooling efficiency in compact air and oil heat exchangers

Suitable design for operating up to 45°C

Radial fan for high cooling efficiency (37 kW and above)

• Low noise level with low speed radial fans

Cooling fan driver for maximum energy efficiency

 Controller

7” LED Display

Group operation of up to 4 compressors

Possibility to choose Master/Slave compressor

Fast communication with ModbusTCP

Ability to connect to customer DCS system via ModbusTCP

Compact construction with integrated driver and controller

Weekly scheduler for starting/stopping the machine at 2 different time intervals can be individually set for each day of the week

Dual PID feature can run simultaneous PID for temperature and pressure

Pressure PID ensures energy-efficient operation by maintaining the pressure at the desired level

Temperature PID controls the fan speed to maintain the screw block’s most efficient operating temperature

All inverter and compressor control data are managed from a single point

Ability to determine co-aging times of the system with selectable parameters

Built-in phase sensor

User-friendly on-screen interface

 22-75 kW   7,5-8,5-10 bar  1,03-16 m³/min

TECHNICAL  SPECIFICATIONS

Model Pressure Capacity* Motor Power Connection Size Dimensions (mm) Weight Noise Level
Minimum Maximum
bar psi m³/min cfm m³/min cfm kW/HP Length Width Height kg dB (A)
IMPETUS VSD 22 7,5 110 1,03 36 4,35 154 22/30 G 1  1/4" 1095 955 1580 750 72
8,5 125 1,04 37 4,17 147 1095 955 1580
10 145 1,03 36 3,76 133 1095 955 1580
IMPETUS VSD 30 7,5 110 1,64 58 6,36 225 30/40 G 1  1/4" 1095 955 1580 875 72
8,5 125 1,62 57 5,91 209 1095 955 1580
10 145 1,59 56 5,41 191 1095 955 1580
IMPETUS VSD 37 7,5 110 1,79 63 7,76 274 37/50 G 1  1/2" 1250 1195 1860 1220 71
8,5 125 1,79 63 7,27 257 1250 1195 1860
10 145 1,77 63 6,52 230 1250 1195 1860
IMPETUS VSD 45 7,5 110 2,33 82 9,3 329 45/60 G 1  1/2" 1250 1195 1860 1400 72
8,5 125 2,31 82 8,73 308 1250 1195 1860
10 145 2,30 81 8,01 283 1250 1195 1860
IMPETUS VSD 55 7,5 110 2,62 93 11,6 410 55/75 G 2" 1450 1400 1965 1620 72
8,5 125 2,56 90 10,85 383 1450 1400 1965
10 145 2,55 90 9,54 337 1450 1400 1965
IMPETUS VSD 75 7,5 110 3,57 126 16,01 565 75/100 G 2" 1450 1400 1965 1850 72
8,5 125 3,63 128 15,27 539 1450 1400 1965
10 145 3,55 125 13,22 467 1450 1400 1965

- Unit performances measured in reference conditions which are 1 bar absolute air Pressure, %0 relative humidity, 20°C inlet air temperature, 71°C thermostatic valve set temperature and use of Smartoil.
- Hertz Kompressoren reserves its rights to make changes in its products and specifications without prior notice.
* Refers to free air delivery measured according to ISO 1217:2009, Annex E standard.