True Oil-free Air at Class 0 Level
Air purity class of the discharge air from Hitachi Oil-free Screw air compressor (DSP) is proved to be the highest level “Class 0” from the test result which was conducted by the renowned TÜV institute, in accordance with ISO8573-1.
ISO8573-1:2010 CLASS 0 TÜV Certification
TÜV (The Technische Überwachungs Verein), a Germany based international test service provision third-party on aspects of technical safety and quality evaluation, is globally well-reputed on its neutrality and expertise as well as its strictness in testing.
Increased air capacity is realised by newly developed air-End.
Constant Pressure Control (V type)
Since Constant Pressure Control allows highly precise pressure control within range of ±0.01MPa, supply of compressed air at necessary pressure is possible with high efficiency.
ECOMODE (Fixed Speed Series)
Responding to the load ratio of compressor, unnecessary compression is avoided by automatically lowering the unload start-up pressure. Energy-Saving is achieved. Taking 75kW water-cooled, 0.7MPa SPEC, Fixed Speed model as an example, in case of 70% load ratio 11.3MWh is saved annually, and in case of 90% load ratio 28MWh is saved annually.
(Calculation condition: air receiver tank of 2.26m3 is installed, 8,000h/year operation)
Direct connection of new developed high efficiency DCBL motor and air-end.
Hitachi original Cascade vector control (patented) achieves high reliability.
Standard Up to 45°C (22-120kW)
Thanks to new internal structure which minimizes the internal temperature rise, continuous operation under ambient temperature up to 45°C is possible.
Overhaul Cycle 6 years
By using the precise special bearings, overhaul interval is 6 years or 48,000 hours, whichever comes first.
Large Air Inlet Filter
Large cartridge type air inlet filter enables the high filtering efficiency and high reliability.
*Necessary to prepare a USB flash memory device (5.5cm or smaller) on user’s side.
*Operation data for one day is approximately 400kB. (For reference)
*Necessary to prepare a Bluetooth® USB dongle on your side.
*For setting changes, part of the items are applicable.
Open network serial communication Modbus®/RTU is supported as standard.
*Modbus®/TCP support is optional.