30-100 hp   100-125-150 psi  30-535 cfm


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

Rotary Screw Air Compressors

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

 General Features 

IE4 efficiency-class electric motors in fixed speed models

IE5 efficiency-class IPM electric motors in variable speed models

• Two-stage screw block

Water cooling (37 kW and above)

Variable and fixed speed motor power options

Soft start with variable speed power transmission

Heat recovery (optional)

Operating with low noise level

Integrated dryer (optional)

 Screw Block

Direct coupled

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

Higher flow rate by up to 10% with two-stage screw

With two-stage compression near isothermal compression

Compact design with no power transmission element requirement in variable speed models

Zero transmission losses by compact direct power transmission in variable speed models

Thanks to low compression rate low axial and compression forces between screw blocks

Thanks to low rotor speeds, a long service life

Reliable operation thanks to elastomer coupling on fixed speed models

Low noise and vibration levels

 Electric Motor

In Fixed Speed Models;

IE4 energy efficiency-class electric motors

Optimised air cooling

Motors have B-class temperature increase

In Variable Speed Models;

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

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.

*Applicable for variable speed models.

 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

In Fixed Speed Models;

Without the need for an external main controller, ability to work synchronized for up to 5 compressors

Weekly scheduler for starting / stopping the machine at 3 different time intervals can be individually set for each day of the week

Internal ModBus communication

User-friendly on-screen interface

Alarm log records the last 20 alarms

Periodic maintenance warnings and log records

In Variable Speed Models;

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

 30-100 hp   100-125-150 psi  30-535 cfm

TECHNICAL  SPECIFICATIONS

Model Pressure Capacity* Motor Power Connection  Dimensions (in,) Weight Noise
psi bar cfm m3/min hp/kW Length Width Height lbs dB (A)
IMPETUS 22 100 7,5 140 3,96 30/22  NPT 1 1/4" 65,7 35,4 62,2 2326 70
125 8,5 130 3,68
150 10,3 112 3,17
175 13 88 2,49
IMPETUS 30 100 7,5 214 6,05 40/30 NPT 1 1/4" 65,7 35,4 62,2 2690 70
125 8,5 179 5,06
150 10,3 159 4,5
175 13 136 3,85
IMPETUS 37 100 7,5 244 6,9 50/37 NPT 1 1/2" 75,1 53,4 73,2 3946 63
125 8,5 221 6,25
150 10,3 210 5,94
175 13 176 4,98
IMPETUS 45 100 7,5 320 9,06 60/45 NPT 1 1/2" 75,1 53,4 73,2 4542 63
125 8,5 280 7,92
150 10,3 240 6,79
175 13 207 5,86
IMPETUS 55 100 7,5 380 10,77 75/55 NPT 2" 87,4 61,6 77,4 4894 66
125 8,5 379 10,74
150 10,3 331 9,37
175 13 289 8,18
IMPETUS 75 100 7,5 535 15,15 100/75 NPT 2" 87,4 61,6 77,4 5710 70
125 8,5 500 14,16
150 10,3 466 13,2
175 13 394 11,16

- 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 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 C standard.

TECHNICAL  SPECIFICATIONS (VSD)

Model Pressure Capacity* Motor Power Connection Dimensions (in,) Weight Noise
Minimum Maximum
psi bar cfm m3/min cfm m³/min hp/kW Length Width Height Ibs dB (A)
IMPETUS VSD 22 100 6,9 36 1,02 152 4,31 30/22 NPT 1 1/4” 38 43 62 1654 72
125 8,6 35,3 1 138 3,91
150 10,3 30 0,85 123 3,47
IMPETUS VSD 30 100 6,9 61,4 1,74 220 6,22 40/30 NPT 1 1/4” 38 43 62 1929 72
125 8,6 55,1 0,56 203 5,76
150 10,3 52,3 1,48 181 5,12
IMPETUS VSD 37 100 6,9 62,5 1,77 271 7,68 50/37 NPT 1 1/2” 47 49 73 2690 71
125 8,6 57,9 1,64 242 6,85
150 10,3 60,4 1,71 214 6,05
IMPETUS VSD 45 100 6,9 81,6 2,31 327 9,26 60/45 NPT 1 1/2” 47 49 73 3087 72
125 8,6 74,9 2,12 291 8,25
150 10,3 72,7 2,06 250 7,08
IMPETUS VSD 55 100 6,9 98,2 2,78 410 11,61 75/55 NPT 2” 55 57 77 3572 72
125 8,6 92,2 2,61 369 10,46
150 10,3 78 2,21 323 9,15
IMPETUS VSD 75 100 6,9 121 3,42 571 16,16 100/75 NPT 2” 55 57 77 4079 72
125 8,6 120 3,41 512 14,49
150 10,3 120 3,39 449 12,71

- 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 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.