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

Differential protection functions and protection functions that pick up on unbalanced currents are blocked.
Each individual protection function is responsible for the actual blocking and is described there, too.
When using the fast measuring transducer inputs as 4 mA to 20 mA inputs, broken-wire detection is active.
With a < 2 mA current, wire breaks are detected and the
display remains unaffected.
8.3.5.4

Application and Setting Notes

Parameter: Mode
•
Recommended setting value (_:1) Mode = off
The Mode parameter is used to switch the broken-wire detection to on, off and test.
Parameter: Mode of blocking
•
Recommended setting value (_:101) Mode of blocking = blocking
The Mode of blocking parameter enables you to define the blocking condition (see Blocking the protec-
tion). Siemens recommends using the default setting. The setting options are blocking, auto blocking
and not blocking.
Parameter: Delta value for autoblock
•
Recommended setting value (_:102) Delta value for autoblock = 1.00 I/IN
With the Delta value for autoblock parameter you can make the blocking decision for protection func-
tions dependent on the amount of the differential current.
8.3.5.5

Settings

Addr.
Brk.wire det.
_:1
_:101
_:102
8.3.5.6

Information List

No.
Brk.wire det.
_:82
_:54
_:52
_:53
_:301
_:302
_:303
_:304
_:305
_:306
SIPROTEC 5, Fault Recorder, Manual
C53000-G5040-C018-5, Edition 11.2017
Parameter
Brk.wire det.:Mode
Brk.wire det.:Mode of
blocking
Brk.wire det.:Delta value for
autoblock
Information
Brk.wire det.:>Block function
Brk.wire det.:Inactive
Brk.wire det.:Behavior
Brk.wire det.:Health
Brk.wire det.:Phs A BW suspected
Brk.wire det.:Phs B BW suspected
Brk.wire det.:Phs C BW suspected
Brk.wire det.:Phase A broken wire
Brk.wire det.:Phase B broken wire
Brk.wire det.:Phase C broken wire
wire break indication is set. The measured values
C Setting Options
•
off
•
on
•
test
•
blocking
•
auto blocking
•
not blocking
0.004 to 5.000
Supervision Functions
8.3 Supervision of the Secondary System
Default Setting
off
blocking
1.000
Data Class Type
(Type)
SPS I
SPS O
ENS O
ENS O
SPS O
SPS O
SPS O
SPS O
SPS O
SPS O
383