NR Electric PCS-9611, Instruction Manual

Page: 60 / 300

3 Operation Theory
PCS-9611 Feeder Relay
3-24
Date: 2014-04-08
“I
012
” is the 2
nd
harmonic of the No.1 zero sequence current.
3.5.5 Zero Sequence Overcurrent Protection Settings
For the information about the common explanation of the settings, see Section 7.3 .
All the settings of the No.1 zero sequence overcurrent protection are listed in the following table.
No. Menu text Explanation Range Step
1 50/51G.RCA
The relay characteristic angle for the No.1
directional zero sequence overcurrent protection
-180°~179° 1°
2 50/51G.En_VTS_Blk
The logic setting of the function which blocks the
1ROC protection related voltage measurement
when the voltage transformer is failed
0~1 1
3 50/51G.K_Hm2
The percent setting of the harmonic blocking
element for the No.1 ROC protection
0.05~1.00 0.001
4 50/51G.3I0_Rls_HmBlk
The current setting for releasing the harmonic
blocking element of the No.1 ROC protection
0.05In~30In 0.001A
5 50/51G1.3I0_Set
The current s etting of the No.1 stage 1 zero
sequence overcurrent protection
0.05In~30In 0.001A
6 50/51G1.t_Op
The time s etting of the No.1 stage 1 zero
sequence overcurrent protection
0~100s 0.001s
7 50/51G1.Opt_Dir
The setting is used to select the directional mode
for the No.1 ROC1 protection, see Section 3.5.3
0~2 1
8 50/51G1.En_Hm_Blk
The logic setting of the harmonic blocking element
for the No.1 ROC1 protection
0~1 1
9 50/51G1.En
The logic setting of the No.1 stage 1 zero
sequence overcurrent protection
0~1 1
10 50/51G1.OutMap
The output matrix setting of the No.1 stage 1 zero
sequence overcurrent protection
0x00000 ~
0xFFFFF
1
11 50/51G2.3I0_Set
The current s etting of the No.1 stage 2 zero
sequence overcurrent protection
0.05In~30In 0.001A
12 50/51G2.t_Op
The time s etting of the No.1 stage 2 zero
sequence overcurrent protection
0~100s 0.001s
13 50/51G2.Opt_Dir
The setting is used to select the directional mode
for the No.1 ROC2 protection, see Section 3.5.3
0~2 1
14 50/51G2.En_Hm_Blk
The logic setting of the harmonic blocking element
for the No.1 ROC2 protection
0~1 1
15 50/51G2.En
The logic setting of the No.1 stage 2 zero
sequence overcurrent protection
0~1 1
16 50/51G2.OutMap
The output matrix setting of the No.1 stage 2 zero
sequence overcurrent protection
0x00000 ~
0xFFFFF
1
17 50/51G3.3I0_Set
The current s etting of the No.1 stage 3 zero
sequence overcurrent protection
0.05In~30In 0.001A