Function Block - ABB Relion 670 Series Technical Reference Manual
Line differential protection ansi
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Also See for Relion 670 Series:
- Technical manual (1432 pages) ,
- Applications manual (944 pages) ,
- Technical reference manual (752 pages)
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1MRK505222-UUS C
6.15.3
Technical reference manual
VA
VB
VC
VCVA
Voltage and
IN
VN
Discrimination
PU27PN
PU27PP
Pickup_N
3VOPU
OperMode
RELAG
Phase Preference
RELBG
PHSEL
BLOCK
ANSI09000220 V1 EN
Figure 198:
Simplified block diagram for Phase preference logic
Function block
PPLPHIZ
I3P*
BFI_3P
V3P*
ZREL
BLOCK
RELAG
RELBG
RELCG
PHSEL
ANSI07000029-2-en.vsd
ANSI07000029 V2 EN
Figure 199:
PPLPHIZ function block
Current
Detect Cross-
Country fault
Evaluation
Section 6
Impedance protection
BFI_3P
AND
ZREL
AND
ANSI09000220-1-en.vsd
375
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