CYG PRS-7367 User Manual

Protection Functions
PRS-7367 83
block the 46N_Str signals. The binary input 46N_Blk_Op can be used to block the 46N_Op
signals.
3.10.3 46N Application Scope
The negative sequence current quantities are not present during normal condition. The negative
sequence overcurrent protection elements can be set for faster and more sensitive operation than
the normal phase overcurrent protection for fault conditions occurring between two phases. The
negative sequence overcurrent protection also provides a back-up protection functionality for the
feeder earth-fault protection in solid and low resistance earthed networks.
3.10.4 46N Settings
Table 3.10-3 46N settings
No.
Name
Values(Range)
Unit
Step
Default
Description
1
46N_Cur_Str
0.04-20.00In
A
0.01In
20
Current start value
2
46N_Mult_Cur_Str
0.8 - 10.0
0.1
1
Multiplier Current start value
3
46N_Curve_Type
0~5
-
1
0
0 Definite time
1 IEC Normal inverse
2 IEC Very inverse
3 IEC Extremely inverse
4 IEC Long-time inverse
5 Programmable
user-defined
4
46N_Curve_ParaA
0.000~120.000
s
0.001
0
Curve parameter A
5
46N_Curve_ParaB
0.000~9.000
s
0.001
0
Curve parameter B
6
46N_Curve_ParaC
0.0~1.0
-
0.1
1.0
Curve parameter C
7
46N_Curve_ParaP
0.02~2.00
-
0.01
2.00
Curve parameter P
8
46N_Curve_ParaK
0.05-100
-
0.01
1.00
Curve parameter k
9
46N_Min_Op_T
0.000 -60.000
s
0.001
60.000
Minimum operate time for
IDMT curves
10
46N_Reset_T
0~1
1
0
Selection of reset curve type
11
46N_Ena
0.04-20.00In
A
0.01In
20
Operation Enable/Disable
3.11 Three-phase overvoltage protection 59
3.11.1 59 Overview
This relay provides a two-stage of overvoltage protection with definite time (DT) or inverse definite

CYG PRS-7367 Specifications

General

Brand	CYG
Model	PRS-7367
Category	Control Unit
Language	English