Models: SFC 8 to 315
Horsepower:
10 to 450 hp
(8 to 315 kW)
Capacities: 10 to 2232 cfm
Standard pressures: 80 to 217 psig
Kaeser's Sigma Frequency Control (SFC) compressors combine our Sigma Profile airends and revolutionary Sigma Control system with the latest in variable speed drive technology. Kaeser uses large, optimized airends turning at slower speeds for more efficient performance across the entire speed range.
Sigma Control
The compressor control system features an industrial-based PC with update capabilities, Intel® microprocessor, and real-time operating system. Five different control configurations are available to precisely match compressor performance to air demand. System can display status in any one of 30 selectable languages.
Precise pressure control
SFC compressors precisely control system pressure to ±2 psig using highly accurate sensors and the Sigma Control System to control motor speed. This eliminates "overpressurizing" and increases energy savings - after all every 2 psig saved in
overpressurizing reduces power consumption by 1%!
Superior drive system technology
SFC drive systems feature electromagnetic interface (EMI) filters, contactors for galvanic separation and line reactors for superior protection. Drive cabinet cooling fans maintain proper operating temperatures even under extreme ambient
conditions.
EMI filter
SFC drive systems are designed with an electromagnetic interference filter that eliminates or isolates all feedback, and prevents harmonic distortion from entering the plant's electrical grid.
Soft starts
SFC units offer a "soft rise" in motor starting current from zero to full load without current spikes or excess heat rise. This allows unlimited motor starts, and since the SFC drive yields a "near unity power factor," power factor penalties
are also eliminated.
