All four steps in OC4PTOC (51/67) can be blocked from the binary input BLOCK. The
binary input BLKx (x=1, 2, 3 or 4) blocks the operation of respective step.
a
b
a>b
OR
|I
OP
|
STx
AND
Pickupx
Characteristx=DefTime
DirModeSelx=Disa bled
DirModeSelx=Non-dire ctional
DirModeSelx=Forward
DirModeSelx=Reverse
AND
AND
FORWARD_Int
REVERSE_Int
OR
OR
STAGE x_DIR_Int
ANSI12000008-3-en.vsd
AND
AND
Characteristx=Inve rse
Inve rse
ANSI12000008-3-en.vsd
0
0-tx
0
0-txMin
PUx
ANSI12000008 V3 EN
Figure 52:
Simplified logic diagram for OC4PTOC
1MRK 511 365-UUS A
Section 8
Current protection
Phasor measurement unit RES670 2.1 ANSI
185
Technical manual
Summary of Contents for Relion 670 Series RES670
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