ABB REC650 ANSI User Manual

EF4PTOC (51N/67N) can also be used to provide a system back-up for example, in the
case of the primary protection being out of service due to communication or voltage
transformer circuit failure.
Directional operation can be combined together with corresponding communication logic
in permissive or blocking teleprotection scheme. Current reversal and weak-end infeed
functionality are available as well.
6.4.3 Function block
ANSI08000004-2-en.vsd
EF4PTOC (51N_67N)
I3P*
V3P*
I3PPOL*
I3PDIR*
BLOCK
BLK1
BLK2
BLK3
BLK4
TRIP
TRST1
TRST2
TRST3
TRST4
BFI_3P
PU_ST1
PU_ST2
PU_ST3
PU_ST4
PUFW
PUREV
2NDHARMD
ANSI08000004 V2 EN
Figure 36: EF4PTOC (51N/67N) function block
6.4.4 Signals
Table 43: EF4PTOC Input signals
Name
Type Default Description
I3P GROUP
SIGNAL
- Three phase group signal for current inputs
U3P GROUP
SIGNAL
- Three phase group signal for polarizing voltage inputs
I3PPOL GROUP
SIGNAL
- Three phase group signal for polarizing current inputs
I3PDIR GROUP
SIGNAL
- Three phase group signal for operating directional
inputs
BLOCK BOOLEAN 0 Block of function
BLKST1 BOOLEAN 0 Block of step 1 (start and trip)
BLKST2 BOOLEAN 0 Block of step 2 (start and trip)
BLKST3 BOOLEAN 0 Block of step 3 (start and trip)
BLKST4 BOOLEAN 0 Block of step 4 (start and trip)
1MRK 511 287-UUS A Section 6
Current protection
99
Technical manual

ABB REC650 ANSI Specifications

General

Brand	ABB
Model	REC650 ANSI
Category	Controller
Language	English