Zero Sequence Overcurrent Protection Settings - NR Electric PCS-9611 Instruction Manual

7 Settings
42 50/51P4.OutMap
43 50/51P4.Opt_Curve
44 50/51P4.TMS
45 50/51P4.tmin
46 50/51P4.K
47 50/51P4.C
48 50/51P4.Alpha
49 50/51P5.I_Set
50 50/51P5.t_Op
51 50/51P5.En
52 50/51P6.I_Set
53 50/51P6.t_Op
54 50/51P6.En
55 50/51P.I_CCE
56 50/51P.En_CCE
NOTE!
1. The setting [50/51Px.Opt_Dir] (x: 1~4) is used to select the directional mode for the stage x (x:
1~4) overcurrent protection respectively. "0" is the non-directional mode; "1" is the forward
directional mode; and "2" is the reverse directional mode.

7.3.2 Zero Sequence Overcurrent Protection Settings

The No.1 zero sequence overcurrent protection settings (in the submenu "EF1 Settings") are
used to determine the characteristic of the No.1 zero sequence overcurrent protection.
The No.2 zero sequence overcurrent protection settings (in the submenu "EF2 Settings") are
used to determine the characteristic of the No.2 zero sequence overcurrent protection.
All the settings of the No.1 zero sequence overcurrent protection are listed in the following table.
7-6
The output matrix setting of the stage 4
overcurrent protection
The setting is for selecting the inverse time
characteristic curve for OC4 protection
The time multiplier setting of the stage 4 ID MT
overcurrent protection
The minimum operation time setting of the stage 4
IDMT o vercurrent protection
Constant "k" for the stage 4 ID MT o vercurrent
protection, see Section 3.3.2
Constant "C" for the stage 4 IDMT overcurrent
protection, see Section 3.3.2
Constant "α" for the stage 4 IDMT o vercurrent
protection, see Section 3.3.2
The current s etting of the stage 5 overcurrent
protection
The time setting of the stage 5 overcurrent
protection
The logic setting of the stage 5 overcurrent
protection
The current s etting of the stage 6 overcurrent
protection
The time setting of the stage 6 overcurrent
protection
The logic setting of the stage 6 overcurrent
protection
The current setting of the heavy current blocking
element for the overcurrent protection
The logic setting of the heavy current blocking
element for the overcurrent protection
Date: 2014-04-08
0x00000 ~
1
0xFFFFF
0~13 1
0.05~100.0 0.001
0~100s 0.001s
0.001~120.0 0.0001
0.00~1.00 0.0001
0.01~3.00 0.0001
0.05In~30In 0.001A
0~100s 0.001s
0~1 1
0.05In~30In 0.001A
0~100s 0.001s
0~1 1
0.05In~30In 0.001A
0~1 1
PCS-9611 Feeder Relay