Siemens 7UT51

7UT51 v3
Settings Record
20
PRIM-2330C 215
1400
ADDITIONAL PROTECTED OBJECT DATA
1401
In VIRT OB
Nominal current of virtual object
1
-
100000 A 2000
1402
In CT
Rated primary current of CT
1
-
100000 A 2000
1404
In CT STPT
Rated primary current of star
-
point CT
1
-
100000 A 2000
1405
CT STARPT
Ground point of the CT currents
Same side X
Opposite sides
1600
TRANSFORMER DIFFERENTIAL PROTECTION SETTINGS
To configure 16xx settings, setting 7816 must first be set to “Existent.”.
1601
87 STATUS
Normal operational status of transformer
differential protection function (87 and
87HS).
OFF X
ON
Block Tripping
1603
87 PICKUP
87
-
Pick
-
Up value of diff protection
0.15
-
2.00 I/In 0.20
1604
87HS RMS
87HS
-
Highset Pick
-
up RMS value of diff
prot.
0.5
-
20.0 I/In 7.5
1606
87SLOPE 1
87
-
Slope 1 of operating characteristic
0.10
-
0.50 0.25
1607
87BASE PT2
87
-
Base point for slope 2 of operating
char.
0.0
-
10.0 I/In 2.5
1608
87SLOPE 2
87
-
Slope 2 of operating characteristic
0.25
-
0.95 0.50
1610
HARMN RSTR
87
-
State of 2nd harmonic restraint
ON X
OFF
1611
%2nd HARMN
87
-
2nd harm content in the different.
current
10
-
80 % 15
1612
X
-
BLK 2HRM
87
-
Time for cross
-
blocking with 2nd
harmonic
0
-
1000 cycles or ∞ 0
1613
n. HARMN
87
-
Choice a further (n
-
th) harmonic restr
5th harmonic X
4th harmonic
3rd harmonic
OFF
1614
%n. HARMN
87
-
n
-
th harmonic content in the diff.
current
10
-
80 % 80
1615
X
-
BLK nHM
87
-
Activ time for cross
-
blocking w/ n
-
th
harm
0
-
1000 cycles or ∞ 0
1616
IDIFFmax n
87
-
Limit IDIFFmax of n
-
th harmonic
restraint
0.5
-
20.0 I/In Trans 1.5
1617
T
-
SAT
-
BLK
87
-
Max. blocking time at CT saturation
2
-
250 cycles or ∞ 8
1618
SAT
-
RESTR.
87
-
Min. restr. current for blocking @CT
satur.
5.00
-
15.00 I/In
Trans
7.00
1625
87 DELAY
87
-
Trip time delay of diff. current stage
0.00
-
60.00 s or ∞ 0.00
Addr
LCD Line 1
WinDIGSI Description
Options or
Range and Unit
Default
Setting
Group A
Setting
Group B
Setting
Group C
Setting
Group D