CYG PRS-7367 - Page 180

Protection Functions
172 PRS-7367
0ms
15s
&
&
1
&
&
SIG
BPAS2_Chg_Ok
BPAS2_Ena=1
SET
BPAS2_DisCharge
SIG
CB01_Open
CB02_Open
CB03_Open
CB_Aft_Cls_Ena=0
SET
CB02_Aft_Cls
CB03_Aft_Cls
AND_Bus1_Live_Vol
AND_Bus2_Live_Vol
SIG
SIG
SIG
SIG
SIG
SIG
SIG
SIG
BPAS_Ena
SIG
1
L1_Vol_Ena=0
SET
L1_Live_Vol
SIG
Figure 3.34-11 Diagram of the charge condition of BPAS2
Operation Process
The diagrams of the operation process of BPAS2 is shown in Figure 3.34-12.
&
BPAS2_Chg_Ok
SIG
L2_Live_Cur
SIG
Bus2_Dead_Vol
SIG
0ms
CB02_Trip_T
SIG
BPAS2_Trip_CB2
Bus1_Dead_Vol
SIG
SIG
BPAS2_Trip_Success
&
SIG
BPAS2_Trip_Fail
&
3ms
5s
CB02_Open
SIG
L1_Live_Vol
SIG
L1_Vol_Ena=0
SET
1
&
BPAS2_Chg_Ok
SIG
CB01_Open
SIG
0ms
CB01_Close_T
BPAS2_Trip_Success
SIG
SIG
BPAS2_Success
&
SIG
BPAS2_Close_Fail
&
3ms
5s
Figure 3.34-12 Diagram of the operation process of BPAS2
3.34.2.4 Backup power automatic switching of busbar 1 (BPAS3)
The logic diagram of the discharge condition of BPAS is shown in Figure 3.34-13.