ABB Relion 670 Series Application Manual page 40

Section 4
Analog and binary signal transfer for line differential protection
Setting
IdMinHigh
IntervIdMinHig
Idunre
CrossBlock
I2/I1Ratio
I5/I1Ratio
NegSeqDiff
IminNegSeq
NegSeqROA
AddDelay
ImaxAddDelay
CurveType
DefDelay
IDMTtMin
TD
p
a
b
c
34
IED 1 IED 2
IBase
2.00 · 2.00 ·
30.000 s 30.000 s
IBase
5.50 · 5.50 ·
1 1
15% 15%
25% 25%
On On
IBase
0.04 · 0.04 ·
60.0 deg 60.0 deg
Off Off
IBase
1.00 · 1.00 ·
15 15
0.100 s 0.100 s
0.010 s 0.010 s
0.00 0.00
0.02 0.02
0.14 0.14
1.00 1.00
1.00 1.00
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Description
IBase
Temporarily
decreased sensitivity
used when the
protected circuit is
connected to a power
source (note 4)
Time interval when
IdMinHig is active
(note 5)
IBase
Unrestrained operate
(differential) current
limit (note 6)
CrossBlock logic
scheme applied (note
7)
Second to
fundamental
harmonic ratio limit
Fifth to fundamental
harmonic ratio limit
Internal/external fault
discriminator enabled
(default)
IBase
Minimum value of the
negative-sequence
current
Operate angle (ROA)
for Internal/external
fault discriminator
(default)
Additional delay
disabled (default)
IBase
Not applicable in this
case (default)
Not applicable in this
case (default)
Not applicable in this
case (default)
Not applicable in this
case (default)
Not applicable in this
case (default)
Not applicable in this
case (default)
Not applicable in this
case (default)
Not applicable in this
case (default)
Not applicable in this
case (default)
Communication set-up, 670/650 series
1MRK 505 382-UEN E
Application Guide