ABB Relion 650 Series Technical Manual page 160

Section 6
Current protection
6.3.2 Functionality
The four step phase overcurrent protection function OC4PTOC (51/67) has independent inverse
time delay settings for step 1 and 4. Step 2 and 3 are always definite time delayed.
All IEC and ANSI inverse time characteristics are available.
The directional function is voltage polarized with memory. The function can be set to be
directional or non-directional independently for each of the steps.
6.3.3 Function block
OC4PTOC (51_67)
I3P*
V3P*
BLOCK
BLK1
BLK2
BLK3
BLK4
ANSI08000002 V1 EN-US
Figure 86: OC4PTOC (51/67) function block
6.3.4 Signals
Table 71:
Name
I3P
V3P
BLOCK
BLK1
BLK2
BLK3
BLK4
154
TRIP
TRST1
TRST2
TRST3
TRST4
PICKUP
PU_ST1
PU_ST2
PU_ST3
PU_ST4
PU_A
PU_B
PU_C
ANSI08000002-1-en.vsd
OC4PTOC (51_67) Input signals
Type Default
GROUP
SIGNAL
GROUP
SIGNAL
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
© Copyright 2011 ABB Power Grids. All rights reserved
Description
- Three phase group signal for current inputs
- Three phase group signal for voltage inputs
0 Block of function
0 Block of step 1
0 Block of step 2
0 Block of step 3
0 Block of step 4
1MRK 506 326-UUS B
M12846-3 v9
M12609-3 v5
PID-1800-INPUTSIGNALS v5
Line distance protection REL650
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