62
FUNCTION CHARACTERISTICS
Breaker failure (BF)
Each thresholds (U/f>, U/f>>) can be associated to BF protection by activating the relative param-
eter in the matrices “Selection of function tripping for BF” in relevant BF menus
2
:
• Set \ Profile A (or B or C or D)\ Breaker failure
Fun-F24_S3.ai
U/f > (U/f)>
&
RESET
t
U/f>>
0T
TRIPPING MATRIX
(LED+RELAYS)
U/f>>
U/f>> Trip
t
U/f>>
&
(ON≡
Inhibit
)
U/f> Inhibition
&
(ON≡
Inhibit
)
U/fAL Inhibition
U/f>> Start
Alarm inhibition
1st element inhibition
U/f
F24S2 Block3
IF Start
=0 if 20≤f≤70 Hz
U/f>> Block1
U/f>> Start
U/f>> Trip
U/f>> Start
U/f>> Trip
&
&
&
Enable (ON≡Enable)
Block1
Block1
Block1
Binary input INx (x=1...8-16)
T 0
Logic
INx
t
ON
INx
t
ON
INx
t
OFF
T0
n.o.
n.c.
INx
t
OFF
Overfluxing protection (24) - Second element logic diagram
XMR-T EQUIPMENT MANUAL
Ed. 2.9 - 02/2021
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