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When the logic signal
‘
50BF Star
’
is activated, it starts the pickup of the function. To monitor the circuit
breaker opening the current measurement via the three phases is used. When the current via the three
phases is less than 0.8% of the rated current, the circuit breaker is considered open and the function
resets itself.
If the phase current exceeds its predetermined value for an equal or greater amount of time than this
preset value, the protection function activates (trips) and does not reset itself until the average value of
the phase drops below the point of current pickup (0.8%In).
4.15 Function 74TCS. Trip circuit supervision
This control function can be set by using the following parameters:
Group
Description
Minimum
Maximum
Step
Unit
Default
74TCS (*)
Trip circuit supervision
Function Enable
-
-
Yes/No
-
No
Time Delay
0.020
300.000
0.001
s
2.000
(*) Optional depending on model
This function allows to monitor the circuit breaker trip circuits. This is performed verifying the continuity
of the trip circuit, in both circuit breaker positions, both open and closed.
A weak injected current shall flow from the relay to the circuit breaker switch trip coil. Finally, to avoid
spurious components this must be appropriately time delayed.
It is verified the continuity of the coils with the following scheme:
4.16 Function CLP. Cold Load Pickup
This protection function can be set by using the following parameters:
Function
Description
Minimum
Maximum
Step
Unit
Default
CLP
Cold Load Pickup
Function Enable
-
-
Yes/No
-
No
Settings group
1
4
1
-
4
No Load time
0.020
300.000
0.001
s
15.000
Cold Load Time
0.020
300.000
0.001
s
15.000
Содержание SIL-A A Series
Страница 8: ...www fanox com Rev 04 8 112 2 1 2 Case dimensions The dimensions are in mm...
Страница 9: ...www fanox com Rev 04 9 112 2 1 3 Connection diagrams 2 1 3 1 Analog connections...
Страница 12: ...www fanox com Rev 04 12 112 2 2 SILA with short circuitable current terminals 2 2 1 Front view...
Страница 13: ...www fanox com Rev 04 13 112 2 2 2 Case dimensions The dimensions are in mm...
Страница 14: ...www fanox com Rev 04 14 112 2 2 3 Connection diagrams 2 2 3 1 Analogic connections...
Страница 22: ...www fanox com Rev 04 22 112 3 3 Functional diagram...
Страница 34: ...www fanox com Rev 04 34 112 4 10 4 Thermal protection curves This is the thermal curve for 3 minutes...
Страница 61: ...www fanox com Rev 04 61 112...
Страница 63: ...www fanox com Rev 04 63 112...
Страница 64: ...www fanox com Rev 04 64 112...
Страница 65: ...www fanox com Rev 04 65 112...
Страница 111: ...www fanox com Rev 04 111 112 11 APPENDIX NOTES...
