ABB Relion 670 series, Technical Reference Manual

Page: 294 / 1232

6.7.5 Setting parameters
Table 139: ZSMGAPC Group settings (basic)
Name Values (Range) Unit Step Default Description
IBase 1 - 99999 A 1 3000 Base value for current measurement
VBase 0.05 - 2000.00 kV 0.05 400.00 Base value for voltage measurement
PilotMode Disabled
Enabled
- - Disabled Pilot mode Disable / Enable
Zreach 0.1 - 3000.0 ohm 0.1 38.0 Line impedance
IMinOp 10 - 30 %IB 1 20 Minimum operating current for SIR
measurement
Table 140: ZSMGAPC Group settings (advanced)
Name Values (Range) Unit Step Default Description
DeltaI 0 - 200 %IB 1 10 Current change level in %IB for fault inception
detection
Delta3I0 0 - 200 %IB 1 10 Zero seq current change level in % of IB
DeltaV 0 - 100 %VB 1 5 Voltage change level in %VB for fault
inception detection
Delta3V0 0 - 100 %VB 1 5 Zero seq voltage change level in % of VB
SIRLevel 5 - 15 - 1 10 Settable level for source impedance ratio
6.8 Faulty phase identification with load encroachment
FMPSPDIS (21)
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Faulty phase identification with load
encroachment for mho
FMPSPDIS
S00346 V1 EN
21
6.8.1 Introduction
The operation of transmission networks today is in many cases close to the stability
limit. Due to environmental considerations the rate of expansion and reinforcement of
the power system is reduced, for example difficulties to get permission to build new
power lines. The ability to accurate and reliable classifying the different types of fault
Section 6
1MRK505222-UUS C
Impedance protection
288
Technical reference manual