CYG PRS-7367 User Manual

Protection Functions
92 PRS-7367
3.13.4 59G Settings
Table 3.13-3 59G settings
No.
Name
Values(Range)
Unit
Step
Default
Description
1
59G_Vol_Str
0.00 -100.00
V
0.01
3.00
Residual overvoltage start value
2
59G_Op_T
0.04 - 300.00
s
0.01
0.04
Operate delay time
3
59G_Ena
0-1
-
-
1
Operation Enable/Disable
4
59G_3U0_Cal
_Ena
0-1
-
1
1
Measured residual Voltage/calculated
residual Voltage
5
59G_Alm_Ena
0-1
-
1
0
59G alarm /59G Operation
3.14 Negative sequence overvoltage protection 59N
3.14.1 59N Overview
This relay provides a one-stage negative sequence overvoltage protection with definite time delay
characteristics.
On a healthy three-phase power system, the negative sequence voltage is nominally zero.
However, when an unbalance situation occurs on the primary system, the negative sequence
voltage is produced.
3.14.1.1 Function Block
The function block of the protection is as below.
U3P
59N
Blk
Blk_Op
Blk_Str
Op
Str
Figure 3.14-1 Function block
3.14.1.2 Signals
Table 3.14-1 Input Signals
Signal
Description

CYG PRS-7367 Specifications

General

Brand	CYG
Model	PRS-7367
Category	Control Unit
Language	English