Application And Setting Notes; Settings; Information List - Siemens SIPROTEC 5 Manual

The device calculates the fault voltage (V
VF = |VA+ VB + VC + Vph/VN • VN |, where Vph/VN forms the Matching ratio Vph / VN parameter.
The Matching ratio Vph / VN parameter takes into account the differing transformation ratios between
the residual voltage input and the phase-voltage inputs.
You can find more information in this respect in chapter
Delay failure indication
When the threshold value for the delay of the failure indication (parameter: Delay failure indication)
is exceeded, 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
•
A protection pickup
The pickup signal of a protection function blocks the
8.3.3.4

Application and Setting Notes

Parameter: Threshold
•
Recommended setting value (_:3) Threshold = 25 V
The Threshold parameter is used to set the voltage which the device uses to recognize the calculated fault
voltage (V ) as a failure of the voltage sums. Siemens recommends using the default setting.
F
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

8.3.3.5
Addr.
Supv. sum V
_:1
_:3
_:6
8.3.3.6

Information List

No.
Supv. sum V
_:82
_:54
_:52
_:53
_:71
SIPROTEC 5, Fault Recorder, Manual
C53000-G5040-C018-5, Edition 11.2017
) with the formula:
F
Parameter C
Supv. sum V:Mode
Supv. sum V:Threshold
Supv. sum V:Delay
failure indication
Information
Supv. sum V:>Block function
Supv. sum V:Inactive
Supv. sum V:Behavior
Supv. sum V:Health
Supv. sum V:Failure
8.3 Supervision of the Secondary System
8.3.3.1 Overview of Functions
>Block function
Failure indication.
Setting Options
•
off
•
on
•
test
0.300 V to 170.000 V
0.00 sto 100.00 s
Data Class
(Type)
SPS
SPS
ENS
ENS
SPS
Supervision Functions
).
Default Setting
off
43.300 V
5.00 s
Type
I
O
O
O
O
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