ABB Relion 670 series - Setting parameters; Technical data; Negative sequence overcurrent protection LCNSPTOC (46); Introduction

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