Technical Data; Phase Preference Logic Pplphiz; Introduction - ABB Relion 670 Series Technical Reference Manual

Section 6
Impedance protection
Name Values (Range)
IphPickup 1 - 100
UVPickup 1 - 100
tDuration 0.000 - 60.000
tSOTF 0.000 - 60.000
tDLD 0.000 - 60.000
6.14.6
6.15
6.15.1
372
Unit Step
%IB 1
%VB 1
s 0.001
s 0.001
s 0.001

Technical data

Table 178: ZCVPSOF technical data
Parameter
Operate voltage, detection of dead line
Operate current, detection of dead line
Delay following dead line detection input before
Automatic switch into fault logic function is
automatically enabled
Time period after circuit breaker closure in which
Automatic switch into fault logic function is active

Phase preference logic PPLPHIZ

Function description
Phase preference logic

Introduction

Phase preference logic function PPLPHIZ is intended to be used in isolated or high
impedance grounded networks where there is a requirement to trip only one of the
faulty lines at cross-country fault.
Phase preference logic inhibits tripping for single phase-to-ground faults in isolated
and high impedance grounded networks, where such faults are not to be cleared by
distance protection. For cross-country faults, the logic selects either the leading or the
lagging phase-ground loop for measurement and initiates tripping of the preferred fault
Default Description
20 Current level for detection of dead line in % of
IBase
70 Voltage level for detection of dead line in % of
VBase
0.020 Time delay for VI detection (s)
1.000 Drop off delay time of switch onto fault function
0.200 Delay time for activation of dead line detection
Range or value
(1–100)% of
VBase
(1–100)% of
IBase
(0.000–60.000) s
(0.000–60.000) s
IEC 61850 IEC 60617
identification identification
PPLPHIZ
1MRK505222-UUS C
Accuracy
± 0.5% of V
n
± 1.0% of I
n
± 0.5% ± 10 ms
± 0.5% ± 10 ms
ANSI/IEEE C37.2
device number
- -
Technical reference manual