CYG PRS-7367 - Settings

Protection Functions
178 PRS-7367
disconnected. Upon the voltage drop of operational power supply, backup power automatic
switching device always trips incoming line breaker first after startup delay; backup power
automatic switching logic cannot go on unless this breaker is confirmed to be at tripping position.
This can prevent the closing of backup power automatic switching upon fault or inverse feeding of
backup power supply.
The purpose of backup power automatic switching delay is to steer by transient busbar
voltage drop; accordingly, backup power automatic switching delay should be greater than
maximum external fault clearing time. Backup power automatic switching shall not operate when
operational power supply is manually disabled. Backup power automatic switching shall not
operate when backup power supply fails to meet voltage condition.
3.34.4 Settings
Name
Values
（Range）
Unit
Step
Default
Description
BPAS1_Ena
0 - 1
-
1
0
Backup power automatic switching of
incoming line 1 (BPAS1) disable/enable
BPAS2_Ena
0 - 1
-
1
0
Backup power automatic switching of
incoming line 2 (BPAS2) disable/enable
BPAS3_Ena
0 - 1
-
1
0
Backup power automatic switching of
busbar 1 (BPAS3) disable/enable
BPAS4_Ena
0 - 1
-
1
0
Backup power automatic switching of
busbar 2 (BPAS4) disable/enable
L1_Vol_Ena
0 - 1
-
1
0
Checking incoming line 1 with normal
voltage disable/enable
L2_Vol_Ena
0 - 1
-
1
0
Checking incoming line 2 with normal
voltage disable/enable
CB_Aft_Cls_Ena
0 - 1
-
1
0
Checking CBs are in after-close status
disable/enable
Intertrip_Ena
0 - 1
-
1
0
Intertrip disable/enable
Bus_Live_Vol
10.00 - 100.00
V
0.01
100.00
Busbar live voltage setting value
Bus_Dead_Vol
10.00 - 100.00
V
0.01
100.00
Busbar dead voltage setting value
Line_Live_Vol
10.00 – 100.00
V
0.01
100.00
Incoming line live voltage setting value
L1_Live_Cur
0.02In - In
A
0.01In
In
Incoming line 1 live current setting value
L2_Live_Cur
0.02In - In
A
0.01In
In
Incoming line 2 live current setting value
CB01_Trip_T
0.01 - 30.00
s
0.01
30.00
Time delay for CB01 tripping
CB01_Close_T
0.01 - 30.00
s
0.01
30.00
Time delay for CB01 closing
CB02_Trip_T
0.01 - 30.00
s
0.01
30.00
Time delay for CB02 tripping
CB02_Close_T
0.01 - 30.00
s
0.01
30.00
Time delay for CB02 closing
CB03_Close_T
0.01 - 30.00
s
0.01
30.00
Time delay for CB03 closing