7SR210 Settings Guide
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3.5.6. Inrush Detector
Description Range Default
Gn 81HBL2 Element
Selects whether the phase inrush detector 81HBL2 is enabled
Disabled, Enabled Disabled
Gn 81HBL2 Bias
Selects the bias method used for magnetising inrush. Phase –
Segregated, each phase blocks itself. Cross – Blocked, each phase can
block the operation of other phases. Sum - Of Squares, each phase
blocks itself using the square root of the sum of squares of the 2nd
harmonic.
Phase, Cross, Sum Cross
Gn 81HBL2 Setting
The magnetising inrush detector operates when the 2nd harmonic current
exceeds a set percentage of the fundamental current
0.1, 0.11 ... 0.49, 0.5 0.2 xI
3.6. Control & Logic
3.6.1. Autoreclose Prot’n
Description Range Default
Gn 79 P/F Inst Trips
Selects which phase fault protection elements are classed as
Instantaneous elements and start an autoreclose sequence. These will be
blocked from operating during Delayed autoreclose sequences. See
autoreclose section of manual for detail of what elements can cause only
Delayed protection to be used.
Combination of ( 51-1, 51-2, 50-1,
50-2 )
----
Gn 79 E/F Inst Trips
Selects which earth fault protection elements are classed as
Instantaneous elements and start an autoreclose sequence. These will be
blocked from operating during Delayed autoreclose sequences. See
autoreclose section of manual for detail of what elements can cause only
Delayed protection to be used.
Combination of ( 51N-1, 51N-2,
50N-1, 50N-2, 51G-1, 51G-2, 50G-
1, 50G-2 )
--------
Gn 79 SEF Inst Trips
Selects which sensitive earth fault protection elements are classed as
Instantaneous elements and start an autoreclose sequence. These will be
blocked from operating during Delayed autoreclose sequences. See
autoreclose section of manual for detail of what elements can cause only
Delayed protection to be used.
Combination of ( 51SEF-1, 51SEF-
2, 50SEF-1, 50SEF-2 )
----
Gn 79 P/F Delayed Trips
Selects which phase fault protection are classed as Delayed elements,
any selected elements operating will start an autoreclose sequence.
Combination of ( 51-1, 51-2, 50-1,
50-2 )
51-1, 51-2, 50-1,
50-2
Gn 79 E/F Delayed Trips
Selects which earth fault protection are classed as Delayed elements,
any selected elements operating will start an autoreclose sequence.
Combination of ( 51N-1, 51N-2,
50N-1, 50N-2, 51G-1, 51G-2, 50G-
1, 50G-2 )
51N-1, 51N-2,
50N-1, 50N-2,
51G-1, 51G-2,
50G-1, 50G-2
Gn 79 SEF Delayed Trips
Selects which sensitive earth fault elements are classed as Delayed
elements, any selected elements operating will start an autoreclose
sequence.
Combination of ( 51SEF-1, 51SEF-
2, 50SEF-1, 50SEF-2 )
51SEF-1, 51SEF-
2, 50SEF-1,
50SEF-2
Gn 79 P/F HS Trips
Selects which phase fault elements are classed as High Set elements,
any selected elements operating will start an autoreclose sequence.
Combination of ( 50-1, 50-2 ) --
Gn 79 E/F HS Trips
Selects which earth fault elements are classed as High Set elements, any
selected elements operating will start an autoreclose sequence.
Combination of ( 50N-1, 50N-2,
50G-1, 50G-2 )
----
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