13.8.6.5
Setting parameters
Table 469:
LCNSPTOV (47) Group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Operation
Disabled
Enabled
-
-
Disabled
Operation Enable/Disable
VBase
0.05 - 2000.00
kV
0.05
400
Base setting for voltage in kV
Pickup2
1 - 200
%VB
1
10
Negative sequence over voltage start value in
%VBase
tV2
0.000 - 120.000
s
0.001
2.000
Time delay to operate
13.8.6.6
Technical data
Table 470:
LCNSPTOV (47)technical data
Function
Range or value
Accuracy
Operate value, negative
sequence overvoltage
(1-200)% of VBase
± 0.5% of V
n
at V<V
n
± 0.5% of V at V>V
n
Reset ratio, negative
sequence overvoltage
>95%
-
Operate time, start
20 ms typically at 0 to 2xV
set
-
Reset time, start
25 ms typically at 2 to 0xV
set
-
Critical impulse time,
negative sequence
overvoltage
10 ms typically at 0 to 2xV
set
-
Impulse margin time,
negative sequence
overvoltage
15 ms typically
-
Timers
(0.000-120.000) s
± 0.5% ± 10 ms
13.8.7
Zero sequence overvoltage protection LCZSPTOV (59N)
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Zero sequence overvoltage protection
LCZSPTOV
-
59N
13.8.7.1
Introduction
Zero sequence components are present in all abnormal conditions involving ground.
They can reach considerably high values during ground faults.
Section 13
1MRK505222-UUS C
Scheme communication
846
Technical reference manual
Summary of Contents for Relion 670 series
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