Undervoltage Protection Settings - NR Electric PCS-9611 Instruction Manual

3 Operation Theory
[27P.Opt_Up/Upp] is the logic setting for deciding the voltage input mode;
[27P1.En] is the logic setting of the stage 1 undervoltage protection;
[27P1.En1] is the binary signal for enabling the stage 1 undervoltage protection;
[27P1.Blk] is the binary signal for blocking the stage 1 undervoltage protection;
[BI_52b] is the binary input from the auxiliary normally closed contact of the circuit breaker;
"27P1.LostVolt" denotes whether the system voltage is lost.

3.12.2 Undervoltage Protection Settings

All the settings of the undervoltage protections are listed in the following table. For the information
about the common explanation of the settings, see Section 7.3.
No. Menu text
1 27P.Opt_1P/3P
2 27P.Opt_Up/Upp
3 27P1.U_Set
4 27P1.t_Op
5 27P1.K_DropOut
6 27P1.En
7 27P1.OutMap
8 27P2.U_Set
9 27P2.t_Op
10 27P2.K_DropOut
11 27P2.En
12 27P2.OutMap
If the voltage is greater than [27Px.U_Set]×[27Px.K_DropOut] (x: 1~2), the corresponding
undervoltage protection will drop out. The dropout coefficient [27Px.K_DropOut] (x: 1~2) for
setting the dropout value of the corresponding undervoltage protection, and its typical value is
"1.03".
3-44
Explanation
The setting for s electing the undervoltage
protection calculation method
The setting for selecting the voltage input mode
for the undervoltage protection
The voltage setting of the stage 1 undervoltage
protection
The time s etting of the stage 1 undervoltage
protection
The dropout coefficient setting of the stage 1
undervoltage protection
The logic setting of the stage 1 undervoltage
protection
The output matrix setting of the stage 1
undervoltage protection
The voltage setting of the stage 2 undervoltage
protection
The time s etting of the stage 2 undervoltage
protection
The dropout coefficient setting of the stage 2
undervoltage protection
The logic setting of the stage 2 undervoltage
protection
The output matrix setting of the stage 2
undervoltage protection
Date: 2014-04-08
Range Step
0~1 1
0~1 1
2~120V 0.001V
0~100s 0.001s
1.03~3.0 0.001
0~1 1
0x00000 ~
1
0xFFFFF
2~120V 0.001V
0~100s 0.001s
1.03~3.0 0.001
0~1 1
0x00000 ~
1
0xFFFFF
PCS-9611 Feeder Relay