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Discerning compressed air users expect maximum availability and efficiency, even from smaller compressors. In addition, there is growing demand for seamless connectivity with master control systems, so that users can benefit from the enhanced efficiency and load distribution that this technology has to offer compared with simple, stand-alone systems.
Featuring energy-saving SIGMA Profile airend rotors and the latest internal SIGMA Control 2 compressor controller as standard, HPC Kaeser’s new SK series rotary screw compressors meet all of these needs. Moreover, users will be impressed by their significantly increased free air delivery and even greater efficiency.
A further important efficiency-enhancing component is the new SIGMA Control 2 internal controller: This advanced system not only enables demand-oriented performance matching and dependable monitoring, but ensures even greater flexibility through its numerous interfaces and innovative plug-in communication modules. Therefore, connection to energy-saving master control systems, computer networks and / or remote diagnostics and monitoring systems could not be easier. A large display and an RFID reader located on the control panel make on-site communication with the system simple.
The new SK series models are able to deliver up to 2.5 m³ of compressed air per minute at 7.5 bar (11 and 15 kW versions). Therefore, depending on the particular model, these figures represent an increase of 11% or even 14%, compared with their predecessors. This impressive performance boost has been achieved both through airend optimisation and the minimisation of internal pressure losses. In turn, these improvements have lead to a reduction in specific power of up to 5 percent. The use of premium efficiency IE3 electrical motors has also contributed to additional energy savings.
In addition, the enclosure features four inlet openings for separate airflow cooling of the compressor, the motor and the switching cabinet and for compressor intake air. HPC Kaeser’s unique cooling system is equipped with a patented premium-efficiency dual-flow fan with separate cooling air flows for the motor and compressor.
This not only achieves optimum cooling performance, low compressed air discharge temperatures and minimal sound levels, but also promotes efficient air compression. The SK series’ modular design concept provides further advantages: In addition to the standard versions, which have a compact footprint of only 0.65 m², the SK22 and SK25 are available as “T” models that feature an integrated, thermally shielded refrigeration dryer. SK series 11 and 15 kW versions with an integrated frequency converter (Sigma Frequency Control – SFC) are also available for variable demand applications suited to speed control.
Users that require not just an efficient compressor, but an all-in-one, compact compressed air system need look no further than an SK Aircenter. This space-saving combination of a compressor, refrigeration dryer and horizontal air receiver provides dependable and efficient compressed air production, treatment and storage within a smart, compact single unit. The SK Aircenter is the ideal choice for smaller businesses and workshops where space is at a premium, or for decentralised compressed air supply applications.
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