Siemens 6MD85, Manual

Page: 793 / 1256

With the
Additional time delay
parameter, you define a definite-time delay in addition to the inverse-
time delay.
If the setting is left on its default value of 0 s, only the inverse-time delay is operative.
Parameter:
Reset time
•
Default setting
(_:107) Reset time
=
0.00 s
With the
Reset time
parameter, you define the reset time delay which is started when the voltage falls
below the dropout threshold. Set the parameter
Reset time
to 0 s when instantaneous reset is desired.
Under network conditions of intermittent faults or faults which occur in rapid succession, Siemens recom-
mends setting the
Reset time
to an appropriate value (> 0 s) to ensure the operation. Otherwise Siemens
recommends to keep the default value to ensure a fast reset of the function.
Settings
Addr. Parameter C Setting Options Default Setting
Inverse-T #
_:1 Inverse-T #:Mode
•
off
•
on
•
test
off
_:2 Inverse-T #:Operate &
flt.rec. blocked
•
no
•
yes
no
_:9 Inverse-T #:Measured
value
•
phase-to-ground
•
phase-to-phase
phase-to-phase
_:8 Inverse-T #:Method of
measurement
•
fundamental comp.
•
RMS value
fundamental
comp.
_:108 Inverse-T #:Pickup mode
•
1 out of 3
•
3 out of 3
1 out of 3
_:3 Inverse-T #:Threshold 0.300 V to 340.000 V 110.000 V
_:101 Inverse-T #:Pickup factor 1.00 to 1.20 1.10
_:102 Inverse-T #:Charact.
constant k 0.00 to 300.00 1.00
_:103 Inverse-T #:Charact.
constant α 0.010 to 5.000 1.000
_:104 Inverse-T #:Charact.
constant c 0.000 to 5.000 0.000
_:105 Inverse-T #:Time dial 0.05 to 15.00 1.00
_:106 Inverse-T #:Additional
time delay 0.00 s to 60.00 s 0.00 s
_:107 Inverse-T #:Reset time 0.00 s to 60.00 s 0.00 s
Information List
No. Information Data Class
(Type) Type
Inverse-T #
_:81 Inverse-T #:>Block stage SPS I
_:54 Inverse-T #:Inactive SPS O
_:52 Inverse-T #:Behavior ENS O
_:53 Inverse-T #:Health ENS O
_:55 Inverse-T #:Pickup ACD O
7.13.9
7.13.10
Protection and Automation Functions
7.13 Overvoltage Protection with 3-Phase Voltage
SIPROTEC 5, High-Voltage Bay Controller, Manual 793
C53000-G5040-C015-9, Edition 11.2017