10.4.3.2 Functionality
The interlocking for busbar earthing switch (BB_ES) function is used for one busbar
earthing switch on any busbar parts according to figure 131.
IEC04000504 V1 EN
Figure 131: Switchyard layout BB_ES
10.4.3.3 Function block
BB_ES
QC_OP
QC_CL
BB_DC_OP
VP_BB_DC
EXDU_BB
QCREL
QCITL
BBESOPTR
BBESCLTR
IEC09000071_1_en.vsd
IEC09000071 V1 EN
Figure 132: BB_ES function block
10.4.3.4 Logic diagram
EXDU_BB
en04000546.vsd
VP_BB_DC
BB_DC_OP
1
QCREL
QCITL
&
BBESOPTR
BBESCLTR
QC_OP
QC_CL
BB_ES
IEC04000546 V1 EN
10.4.3.5 Signals
Table 201: BB_ES Input signals
Name
Type Default Description
QC_OP BOOLEAN 0 Busbar earthing switch QC is in open position
QC_CL BOOLEAN 0 Busbar earthing switch QC is in closed position
BB_DC_OP BOOLEAN 0 All disconnectors on this busbar part are open
VP_BB_DC BOOLEAN 0 Status for all disconnectors on this busbar part are
valid
EXDU_BB BOOLEAN 0 No transmission error from any bay containing all
disconnectors on this busbar part
Section 10 1MRK 511 287-UEN A
Control
266
Technical manual