Delay failure indication
If it falls below the balance factor
Threshold min/max
and at the same time the maximum phase-to-phase
voltage exceeds the
Release threshold
, the delay of the failure indication begins, (parameter:
Delay
failure indication
). If both conditions persist during this time, the indication
Failure
is generated.
Blocking the Function
The following blockings reset the picked up function completely:
•
Externally or internally via the binary input signal
>Block function
•
A protection pickup
The pickup signal of a protection function blocks the
Failure
indication.
Application and Setting Notes
Parameter: Threshold min/max
•
Recommended setting value
(_:102) Threshold min/max
=
0.75
The
Threshold min/max
parameter is used to set the ratio between the minimum (V
min
) and the maximum
(V
max
) phase-to-phase voltage. Siemens recommends using the default setting.
Parameter: Release threshold
•
Recommended setting value
(_:101) Release threshold
=
50 V
With the
Release threshold
parameter you set the lower limit of the maximum phase-to-phase voltage
(V
max
). Siemens recommends using the default setting.
Parameter: Delay failure indication
•
Recommended setting value
(_:6) Delay failure indication
=
5.00 s
Set the
Delay failure indication
parameter so that overfunctions due to disturbing influences (such as
switching operations) are avoided. Siemens recommends using the default setting.
Settings
Addr.
Parameter
C
Setting Options
Default Setting
Supv. balan. V
_:1
Supv. balan. V:Mode
•
off
•
on
•
test
off
_:101
Supv. balan. V:Release
threshold
0.300 V to 170.000 V
50.000 V
_:102
Supv. balan. V:Threshold
min/max
0.58 to 0.95
0.75
_:6
Supv. balan. V:Delay
failure indication
0.00 sto 100.00 s
5.00 s
Information List
No.
Information
Data Class
(Type)
Type
Supv. balan. V
_:82
Supv. balan. V:>Block function
SPS
I
_:54
Supv. balan. V:Inactive
SPS
O
_:52
Supv. balan. V:Behavior
ENS
O
8.3.2.4
8.3.2.5
8.3.2.6
Supervision Functions
8.3 Supervision of the Secondary System
374
SIPROTEC 5, Fault Recorder, Manual
C53000-G5040-C018-5, Edition 11.2017
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