IGS-NT Combi, SW Version 3.0,   ©ComAp – May 2013                    
IGS-NT-Combi-3.0 Reference Guide.PDF 
 
 
Island operation (MCB is opened, GCB is closed) 
Mains is present (MCB is closed, GCB is opened) 
Gen-set is synchronizing (MCb is closed, GCB is opened) 
Gen-set is in parallel with mains (MCB is closed, GCB is closed) 
GEN-SET EXTERNAL CONDITIONS