b3=
STL1 (startL1)
b4=
FWL1 (forwardL1)
b5=
REVL1 (reverseL1)
b6=
STL2 (startL2)
b7=
FWL2 (forwardL2)
b8=
REVL2 (reverseL2)
b9=
STL3 (startL3)
b10=
FWL3 (forwardL3)
b11=
REVL3 (reverseL3)
b12=
STN (startN)
b13=
FWN (forwardN)
b14=
REVN (reverseN)
The StartMatrix function contains two function: the START criteria and the
DIRECTION criteria, see Figure
The START criteria is to ensure that a forward and reverse signal shall come
together with a start signal to pass through the block. This is done individually for
each protection function connected to the StartMatrix via the
STDIRX
inputs, see
Figure
.
All
STDIROUT
signals are then connected via an OR gate, see Figure
.
The DIRECTION criteria allow either forward or reverse (phase-wise forward
FWLx
or forward neutral
FWN
or phase-wise reverse
REVLx
or reverse neutral
REVN
) to pass through to the general STDIR output. If both forward and reverse
are active phase-wise (e.g.
REVLx
=
FWLx
=
True
) or at neutral (e.g.
FWN
=
REVN
=
True
) at the same time, none will be shown, see Figure
1MRK 505 394-UEN A
Section 14
Logic
Line differential protection RED650 2.2 IEC
443
Technical manual
Содержание RED650
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