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Supervision Functions
9.3 Supervision of the Secondary System
Resetting:
The broken wire suspected is reset by phase current flowing again or by a binary input signal. Binary resetting
can be useful during laboratory tests among other applications.
Indication
If the broken-wire detection has not been reset within 10 ms, it will be indicated. The indication is held stable
for the duration of at least 3 periods.
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.
9.3.9.4
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.
9.3.9.5
Settings
Addr.
Brk.wire det.
_:1
9.3.9.6
Information List
No.
Brk.wire det.
_:82
_:54
_:52
_:53
_:301
_:302
_:303
_:304
_:305
_:306
_:307
_:308
9.3.10
Current-Balance Supervision
9.3.10.1
Overview of Functions
In healthy network operation, a certain balance between currents can be assumed.
The Current-balance supervision function detects the following errors:
•
Unbalance of phase currents in the secondary circuit
•
Connection errors during commissioning or short circuits and interruptions in the secondary circuit
1272
Parameter
Brk.wire det.:Mode
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
Brk.wire det.:Broken wire suspected
Brk.wire det.:Broken wire confirmed
wire break indication is set. The measured values
C
Setting Options
•
off
•
on
•
test
SIPROTEC 5, Overcurrent Protection, Manual
Default Setting
off
Data Class
Type
(Type)
SPS
I
SPS
O
ENS
O
ENS
O
SPS
O
SPS
O
SPS
O
SPS
O
SPS
O
SPS
O
SPS
O
SPS
O
C53000-G5040-C017-8, Edition 07.2017
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