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Rev.04
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4.17 Function 60CTS. Phase CT Supervision
This protection function can be set by using the following parameters:
Function
Description
Minimum
Maximum
Step
Unit
Default
60CTS (*)
Phase CT Supervision
Function Enable
-
-
Yes/No
-
No
Time Delay
0.020
300.000
0.001
s
5
(*) Optional depending on model
Current transformer supervision is provided to detect the loss of
one
of the phases.
If a current lower than 0.8% of the nominal current is detected in one phase during more than 40ms, the
adjusted time starts to count, and the trip occurs after the set time delay.
The reset is instantaneous when a current higher than 0.8% of nominal current is detected.
The accuracy of the time delay is equal to the initial 40ms plus the preset time ±30ms or ±0.5%
(whichever is greater).
4.18 Function TB. Trip Block protection for switch disconnector
This protection function can be set by using the following parameters:
Group
Description
Minimum
Maximum
Step
Unit
Default
TB (*)
Trip block protection for the switchgear
Function Enable
-
-
Yes/No
-
No
Current Tap
1.500
30.000
0.001
I nominal
7.000
(*) Optional depending on model
Some transformation centers use a combination of switchgear and fuses for cutting out.
Switchgears have a limited opening current, so the fuses are responsible for cutting out the circuit for
high current short circuits, as the switchgear would be destroyed if opened in this situation. In order to
deal with these situations, tripping is blocked when the phase current exceeds a pre-set value.
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...