ABB Relion 670 series - Technical data; Phase preference logic PPLPHIZ; Introduction

Name Values (Range) Unit Step Default Description
IphPickup 1 - 100 %IB 1 20 Current level for detection of dead line in % of
IBase
UVPickup 1 - 100 %VB 1 70 Voltage level for detection of dead line in % of
VBase
tDuration 0.000 - 60.000 s 0.001 0.020 Time delay for VI detection (s)
tSOTF 0.000 - 60.000 s 0.001 1.000 Drop off delay time of switch onto fault function
tDLD 0.000 - 60.000 s 0.001 0.200 Delay time for activation of dead line detection
6.14.6 Technical data
Table 178: ZCVPSOF technical data
Parameter Range or value Accuracy
Operate voltage, detection of dead line (1–100)% of
VBase
± 0.5% of V
n
Operate current, detection of dead line (1–100)% of
IBase
± 1.0% of I
n
Delay following dead line detection input before
Automatic switch into fault logic function is
automatically enabled
(0.000–60.000) s ± 0.5% ± 10 ms
Time period after circuit breaker closure in which
Automatic switch into fault logic function is active
(0.000–60.000) s ± 0.5% ± 10 ms
6.15 Phase preference logic PPLPHIZ
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Phase preference logic PPLPHIZ - -
6.15.1 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
Section 6 1MRK505222-UUS C
Impedance protection
372
Technical reference manual