Siemens 6MD85, Manual

Page: 1031 / 1256

Parameter:
Threshold
•
Default setting
(_:104) Threshold
=
1000
You use the
Threshold
parameter to define the threshold of residual switching cycles with rated normal
current. A warning signal is generated when the statistic is less than the
Threshold
.
Example
Here is an example that shows you how to set the
Threshold
parameter. Assuming a circuit breaker with the
same technical data as provided in the example for residual switching cycles, 50 breaking operations with
rated short-circuit breaking current are permitted.
A warning signal should be issued when the number of possible breaking operations with rated short-circuit
breaking current is less than 3. For that condition, you set the
Threshold
value based on the following calcu-
lation:
[FoCBW2P4-301012-01.tif, 1, en_US]
Settings
Addr. Parameter C Setting Options Default Setting
2P-method
_:1 2P-method:Mode
•
off
•
on
•
test
off
_:101 2P-method:Switching
cycles at Ir 100 to 1000000 10000
_:102 2P-method:Rated short-
circ.cur. Isc 10 A to 100000 A 25000 A
_:103 2P-method:Switching
cycles at Isc 1 to 1000 50
_:104 2P-method:Threshold 0 to 10000000 100
Information List
No. Information Data Class
(Type) Type
2P-method
_:54 2P-method:Inactive SPS O
_:52 2P-method:Behavior ENS O
_:53 2P-method:Health ENS O
_:301 2P-method:Endur.A INS O
_:302 2P-method:Endur.B INS O
_:303 2P-method:Endur.C INS O
_:304 2P-method:Warning ACT O
9.6.5.3
9.6.5.4
Measured Values, Energy Values, and Supervision of the Primary System
9.6 Circuit-Breaker Wear Monitoring
SIPROTEC 5, High-Voltage Bay Controller, Manual 1031
C53000-G5040-C015-9, Edition 11.2017