Settings - Siemens 6MD85 Manual

Protection and Automation Functions
7.17 Undervoltage Protection with Any Voltage
Parameter Value
on
off
NOTE
i
i
Because of the flexible setting options of the voltage measurand, the function itself does not determine the
current associated with the voltage. A suitable current-flow monitoring function must be created by the
user with the Continuous Function Chart (CFC), and connected to the binary input signal >Current
flow-criterion.
Operation as Supervision Function
If you want the tripping stage to have a reporting effect only, generation of the operate indication and fault
logging can be disabled via the Operate & flt.rec. blocked parameter.

Settings

7.17.5
Addr.
General
_:2311:101
Stage 1
_:571:1
_:571:2
_:571:9
_:571:8
_:571:3
_:571:4
_:571:6
Stage 2
_:572:1
_:572:2
822
Description
Because of the application, it makes sense that the stage is only active (that
is, not blocked) when a certain current flow is present (see note).
Current flow monitoring does not make sense for the application.
Parameter C
General:Current-flow
criterion
Stage 1:Mode
Stage 1:Operate &
flt.rec. blocked
Stage 1:Measured value
Stage 1:Method of
measurement
Stage 1:Threshold
Stage 1:Dropout ratio
Stage 1:Operate delay
Stage 2:Mode
Stage 2:Operate &
flt.rec. blocked
Setting Options
•
off
•
on
•
off
•
on
•
test
•
no
•
yes
•
VA measured
•
VB measured
•
VC measured
•
VAB measured
•
VBC measured
•
VCA measured
•
VAB calculated
•
VBC calculated
•
VCA calculated
•
V0 calculated
•
fundamental comp.
•
RMS value
0.300 V to 340.000 V
1.01 to 1.20
0.00 s to 60.00 s
•
off
•
on
•
test
•
no
•
yes
SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017
Default Setting
on
off
no
VA measured
fundamental
comp.
80.000 V
1.05
3.00 s
off
no