SIGMA is an integrated generator protection and control system. The system is of high quality, is cost effective and easy to use.

The SELCO S6100 SIGMA S/LS Module provides busbar monitoring, frequency stabilization, voltage stabilization, voltage matching, automatic synchronization and active/reactive load sharing. The S6100 has dedicated interfaces for both conventional and electronic governors and automatic voltage regulators (AVRs). Manual control is also possible though external push buttons.