IM, IMC, IMB switch;
PM fused switch;
QM fuse-switch combination;
DM1-A, DM1-D, single-isolation SF6 type circuit breaker;
DM2 double-isolation SF6 type circuit breaker;
CM, CM2 voltage transformers;
SM disconnector;
GBC-A, GBC-B current and/or voltage measurements;
GIM intermediate bus unit;
GBM connection unit,!-[10 ]