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6
POWER PROTECTION FUNCTIONS
To be able to trip with any of the protection functions, the setting Function Enable must be set to a value
different to No. We have 2 different options: Alarm or Trip.
In both cases the function will trip, but only if the Function Enable is set to Trip the protection function
will participate in the GENERAL TRIP.
6.1 Function 32. Directional overpower
This protection function can be set by using the following parameters:
Function
Description
Minimum
Maximum
Step
Unit
Default
32_1
32_2
32_3
32_4
Directional overpower
Function Enable
-
-
No/Alarm/Trip
-
No
Activation Level
0.02
2.00
0.01
xSn
1.20
Operating Angle
0
359
1
degrees
120
Time Delay
0.020
300.000
0.001
s
0.200
The time delay is independent from the measured phase apparent power through the relay, if any phase
apparent power exceeds the adjusted 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 measured value of the
phase apparent power drops below the activation level pick-up.
The function activates at 100% of the preset input and deactivates at 95%. The reset time is
configurable.
The accuracy of the Time Delay is equal to the set time delay ±30ms or ±0.5% (whichever is greater).
This protection function has a hysteresis for its activation: it takes a minimum of 6.5 volts for 32 functions
to be operational. If the measured voltage is less than 6.5 volts the protection function will not act.
Apparent power is defined as S=V*Iconjugated.
The intervention sector is defined in the following way: the characteristic angle is rotated anticlockwise
along the active power axis, which gives us the maximum torque direction. A straight line is drawn
perpendicular to this maximum torque direction at the adjusted pickup point, to establish two half-planes
to define the operating and non-operating zones.
The directional power protection function operates in accordance with the following characteristic:
Summary of Contents for SIL-G
Page 1: ...USER S MANUAL USER S MANUAL SIL G Feeder Relay...
Page 8: ...www fanox com Rev 01 8 151 2 3 Connection diagrams 2 3 1 Analog current connections...
Page 10: ...www fanox com Rev 01 10 151 3 VT configuration phase neutral...
Page 11: ...www fanox com Rev 01 11 151 3 VT configuration phase neutral residual voltage...
Page 12: ...www fanox com Rev 01 12 151 3VT configuration phase phase residual voltage...
Page 13: ...www fanox com Rev 01 13 151 2VT configuration phase phase residual voltage...
Page 14: ...www fanox com Rev 01 14 151 3 VT configuration phase neutral phase B line voltage...
Page 27: ...www fanox com Rev 01 27 151 Dimensions 175x175x150 3 3 Functional diagram...
Page 28: ...www fanox com Rev 01 28 151...
Page 69: ...www fanox com Rev 01 69 151 General trip...
Page 88: ...www fanox com Rev 01 88 151...
Page 89: ...www fanox com Rev 01 89 151...
Page 90: ...www fanox com Rev 01 90 151...
Page 95: ...www fanox com Rev 01 95 151 Time Minutes Seconds Milliseconds...
Page 150: ...www fanox com Rev 01 150 151 NOTES...
Page 151: ...www fanox com Rev 01 151 151...
