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
246.
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 247.
All STDIROUT signals are then connected via an OR gate, see Figure
246.
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
248.
1MRK 506 382-UEN A Section 13
Logic
Line distance protection REL650 2.2 IEC 475
Technical manual
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