Where no time grading and therefore no displacement of the characteristic curve is required, leave the
Time
dial
parameter at
1
(default setting).
Parameter:
Reset
•
Default setting
(_:4891:131) Reset
=
disk emulation
You can use the
Reset
parameter setting to define whether the stage decreases according to the dropout
characteristic curve (in accordance with the behavior of a disk emulation = rotor disk) or instantaneously.
Parameter Value
Description
disk emulation
Select this setting if the device is coordinated with electromechanical
devices or other devices which perform a dropout after a disk emula-
tion.
instantaneous
Select this setting if the dropout does not have to be performed after a
disk emulation and an instantaneous dropout is desired instead.
Settings
Addr.
Parameter
C
Setting Options
Default Setting
General
_:4891:1
Inverse-T 1:Mode
•
off
•
on
•
test
off
_:4891:2
Inverse-T 1:Operate &
flt.rec. blocked
•
no
•
yes
no
_:4891:111
Inverse-T 1:Directional
mode
•
forward
•
reverse
forward
_:4891:8
Inverse-T 1:Method of
measurement
•
fundamental comp.
•
RMS value
fundamental
comp.
_:4891:110
Inverse-T 1:Directional
comparison
•
no
•
yes
no
_:4891:112
Inverse-T 1:Release via
input signal
•
no
•
yes
no
_:4891:10
Inverse-T 1:Blk. by
meas.-volt. failure
•
no
•
yes
yes
_:4891:26
Inverse-T 1:Dynamic
settings
•
no
•
yes
no
_:4891:27
Inverse-T 1:Blk. w. inrush
curr. detect.
•
no
•
yes
no
_:4891:3
Inverse-T 1:Threshold
1 A @ 100 Irated 0.030 A to 35.000 A
1.200 A
5 A @ 100 Irated 0.15 A to 175.00 A
6.00 A
1 A @ 50 Irated
0.030 A to 35.000 A
1.200 A
5 A @ 50 Irated
0.15 A to 175.00 A
6.00 A
1 A @ 1.6 Irated
0.001 A to 1.600 A
1.200 A
5 A @ 1.6 Irated
0.005 A to 8.000 A
6.000 A
_:4891:130
Inverse-T 1:Type of char-
acter. curve
_:4891:114
Inverse-T 1:Min. time of
the curve
0.00 s to 1.00 s
0.00 s
_:4891:131
Inverse-T 1:Reset
•
instantaneous
•
disk emulation
disk emulation
_:4891:101
Inverse-T 1:Time dial
0.00 to 15.00
1.00
_:4891:115
Inverse-T 1:Additional
time delay
0.00 s to 60.00 s
0.00 s
7.7.6.3
Protection and Automation Functions
7.7 Directional Overcurrent Protection, Ground
726
SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017
Summary of Contents for 6MD85
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