The directional function is voltage polarized.
NS4PTOC can be set directional or non-directional independently for each of the
steps.
6.5.3 Function block
GUID-8EDB8B12-0D86-4F6B-A1FB-F5D0C72AA545 v2
NS4PTOC
I3P*
I3PDIR*
U3P*
BLOCK
BLKTR
BLKST1
BLKST2
BLKST3
BLKST4
ENMULT1
ENMULT2
ENMULT3
ENMULT4
TRIP
TR1
TR2
TR3
TR4
START
ST1
ST2
ST3
ST4
STFW
STRV
IEC10000054-2-en.vsd
IEC10000054 V2 EN-US
Figure 49: NS4PTOC function block
6.5.4 Signals
PID-4151-INPUTSIGNALS v4
Table 60: NS4PTOC Input signals
Name
Type Default Description
I3P GROUP
SIGNAL
- Group connection for operate current
I3PDIR GROUP
SIGNAL
- Group connection for directional current
U3P GROUP
SIGNAL
- Group connection for polarizing voltage
BLOCK BOOLEAN 0 General block
BLKTR BOOLEAN 0 Block of trip
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)
ENMULT1 BOOLEAN 0 When activated, the current multiplier is in use for
step1
ENMULT2 BOOLEAN 0 When activated, the current multiplier is in use for
step2
ENMULT3 BOOLEAN 0 When activated, the current multiplier is in use for
step3
ENMULT4 BOOLEAN 0 When activated, the current multiplier is in use for
step4
1MRK 505 384-UEN A Section 6
Current protection
Breaker protection REQ650 2.2 IEC 127
Technical manual