13.8.7.5
Setting parameters
Table 473:
LCZSPTOV (59N) Group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Operation
Disabled
Enabled
-
-
Disabled
Operation Disabled/Enabled
VBase
0.05 - 2000.00
kV
0.05
400
Base setting for voltage in kV
3V0PU
1 - 200
%VB
1
10
Zero sequence voltage start value in % of
VBase
t3V0
0.000 - 120.000
s
0.001
2.000
Time delay to operate
13.8.7.6
Technical data
Table 474:
LCZSPTOV (59N)technical data
Function
Range or value
Accuracy
Operate value, zero
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, zero
sequence overvoltage
>95%
-
Operate time, start
25 ms typically at 0 to 1.5xV
set
-
Reset time, start
25 ms typically at 1.5 to 0xV
set
-
Critical impulse time, zero
sequence overvoltage
10 ms typically at 0 to 1.5xV
set
-
Timers
(0.000-120.000) s
± 0.5% ± 10 ms
13.8.8
Negative sequence overcurrent protection LCNSPTOC (46)
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Negative sequence overcurrent
protection
LCNSPTOC
-
46
13.8.8.1
Introduction
Negative sequence components are present in all types of fault condition. They can
reach considerably high values during abnormal operation.
Section 13
1MRK505222-UUS C
Scheme communication
848
Technical reference manual
Summary of Contents for Relion 670 series
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