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
wire break
indication is set. The measured values
display remains unaffected.
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.
Settings
Addr. Parameter C Setting Options Default Setting
Brk.wire det.
_:1 Brk.wire det.:Mode
•
off
•
on
•
test
off
Information List
No.
Information Data Class
(Type)
Type
Brk.wire det.
_:82 Brk.wire det.:>Block function SPS I
_:54 Brk.wire det.:Inactive SPS O
_:52 Brk.wire det.:Behavior ENS O
_:53 Brk.wire det.:Health ENS O
_:301 Brk.wire det.:Phs A BW suspected SPS O
_:302 Brk.wire det.:Phs B BW suspected SPS O
_:303 Brk.wire det.:Phs C BW suspected SPS O
_:304 Brk.wire det.:Phase A broken wire SPS O
_:305 Brk.wire det.:Phase B broken wire SPS O
_:306 Brk.wire det.:Phase C broken wire SPS O
_:307 Brk.wire det.:Broken wire suspected SPS O
_:308 Brk.wire det.:Broken wire confirmed SPS O
Current-Balance Supervision
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
9.3.9.4
9.3.9.5
9.3.9.6
9.3.10
9.3.10.1
Supervision Functions
9.3 Supervision of the Secondary System
1272 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
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