ABB Relion 670 series - Setting parameters; Technical data; Zero sequence overvoltage protection LCZSPTOV (59 N); Introduction

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