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4.5 Function 50N. Instantaneous calculated neutral overcurrent
This protection function can be set by using the following parameters:
Function
Description
Minimum
Maximum
Step
Unit
Default
50N
Instantaneous calculated overcurrent
Function Enable
-
-
No/Alarm/Trip/SHB Trip
-
No
Current Tap
0.050
30.000
0.001
xIn
5.000
Time Delay
0.000
300.000
0.001
s
0.200
The time delay is independent from the operating current flowing through the relay, so 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 pick-up.
The function activates at 100% of the preset input and deactivates at 95%. The reset is instantaneous.
The accuracy of the Time Delay is equal to the set time delay ±35ms or ±0.5% (whichever is greater).
4.6 Function 67G. Inverse time directional measured neutral overcurrent
This protection function can be set by using the following parameters:
Function
Description
Minimum
Maximum
Step
Unit
Default
67G-1
67G-2
Inverse time directional measured neutral overcurrent
Function Enable
-
-
No/Alarm/Trip/SHB Trip
-
No
Curve Type
-
-
(1)
-
IEC Standard Inverse
Time Dial (TMS)
0.05
25
0.01
(2)
1.00
Current Tap
0.010
20.000
0.001
xIn
5.000
Time Delay
0.000
300.00
0.001
s
0.200
Directionality
-
-
No/Forward/Reverse
-
No
Polarization voltage
0.08
2.00
0.01
xUn
0.5
Operating angle
0
359
1
degrees
90
Half-cone angle
10
170
1
degrees
90
“Un” will be
Nominal V. P-P setting/
√𝟑
(available in general settings) regardless the VT connection
type.
(1)
Definite time and 8 curves are included to be selected by the user:
Содержание SIL-G
Страница 1: ...USER S MANUAL USER S MANUAL SIL G Feeder Relay...
Страница 8: ...www fanox com Rev 01 8 151 2 3 Connection diagrams 2 3 1 Analog current connections...
Страница 10: ...www fanox com Rev 01 10 151 3 VT configuration phase neutral...
Страница 11: ...www fanox com Rev 01 11 151 3 VT configuration phase neutral residual voltage...
Страница 12: ...www fanox com Rev 01 12 151 3VT configuration phase phase residual voltage...
Страница 13: ...www fanox com Rev 01 13 151 2VT configuration phase phase residual voltage...
Страница 14: ...www fanox com Rev 01 14 151 3 VT configuration phase neutral phase B line voltage...
Страница 27: ...www fanox com Rev 01 27 151 Dimensions 175x175x150 3 3 Functional diagram...
Страница 28: ...www fanox com Rev 01 28 151...
Страница 46: ...www fanox com Rev 01 46 151 4 10 4 Thermal protection curves This is the thermal curve for 3 minutes...
Страница 69: ...www fanox com Rev 01 69 151 General trip...
Страница 88: ...www fanox com Rev 01 88 151...
Страница 89: ...www fanox com Rev 01 89 151...
Страница 90: ...www fanox com Rev 01 90 151...
Страница 95: ...www fanox com Rev 01 95 151 Time Minutes Seconds Milliseconds...
Страница 150: ...www fanox com Rev 01 150 151 NOTES...
Страница 151: ...www fanox com Rev 01 151 151...