Table of Contents

ABB / Directional phase overcurrent protection, four steps (OC4PTOC) _ Setting & highlights _ AB2035

Table of Contents

Overview

The “Directional phase overcurrent protection, four steps (OC4PTOC)” function has an inverse or definite time delay for each step.
All IEC and ANSI inverse time characteristics are available together with an optional user defined time characteristic.

For more detailed information on “Directional phase overcurrent protection, four steps (OC4PTOC)” function, refer to ABB, Relion 670 Series manuals.

To see other supported functions, click here.


OC4PTOC Identification

Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Directional phase overcurrent protection, four steps OC4PTOC 4(3I>)
4I–c–I
4I—–I
51_67

Signals & Setting Parameters


OC4PTOC function block

OC4PTOC function block

OC4PTOC Input signals

OC4PTOC Input signals
Name Type Default Description
I3P GROUP SIGNAL Group signal for current input
U3P GROUP SIGNAL Group signal for voltage input
BLOCK BOOLEAN 0 Block of function
BLKTR BOOLEAN 0 Block of trip
BLKST1 BOOLEAN 0 Block of Step1
BLKST2 BOOLEAN 0 Block of Step2
BLKST3 BOOLEAN 0 Block of Step3
BLKST4 BOOLEAN 0 Block of Step4
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

OC4PTOC Output signals

OC4PTOC Output signals
Name Type Description
TRIP BOOLEAN Trip
TR1 BOOLEAN Common trip signal from step1
TR2 BOOLEAN Common trip signal from step2
TR3 BOOLEAN Common trip signal from step3
TR4 BOOLEAN Common trip signal from step4
TRL1 BOOLEAN Trip signal from phase L1
TRL2 BOOLEAN Trip signal from phase L2
TRL3 BOOLEAN Trip signal from phase L3
TR1L1 BOOLEAN Trip signal from step1 phase L1
TR1L2 BOOLEAN Trip signal from step1 phase L2
TR1L3 BOOLEAN Trip signal from step1 phase L3
TR2L1 BOOLEAN Trip signal from step2 phase L1
TR2L2 BOOLEAN Trip signal from step2 phase L2
TR2L3 BOOLEAN Trip signal from step2 phase L3
TR3L1 BOOLEAN Trip signal from step3 phase L1
TR3L2 BOOLEAN Trip signal from step3 phase L2
TR3L3 BOOLEAN Trip signal from step3 phase L3
TR4L1 BOOLEAN Trip signal from step4 phase L1
TR4L2 BOOLEAN Trip signal from step4 phase L2
TR4L3 BOOLEAN Trip signal from step4 phase L3
START BOOLEAN General start signal
ST1 BOOLEAN Common start signal from step1
ST2 BOOLEAN Common start signal from step2
ST3 BOOLEAN Common start signal from step3
ST4 BOOLEAN Common start signal from step4
STL1 BOOLEAN Start signal from phase L1
STL2 BOOLEAN Start signal from phase L2
STL3 BOOLEAN Start signal from phase L3
ST1L1 BOOLEAN Start signal from step1 phase L1
ST1L2 BOOLEAN Start signal from step1 phase L2
ST1L3 BOOLEAN Start signal from step1 phase L3
ST2L1 BOOLEAN Start signal from step2 phase L1
ST2L2 BOOLEAN Start signal from step2 phase L2
ST2L3 BOOLEAN Start signal from step2 phase L3
ST3L1 BOOLEAN Start signal from step3 phase L1
ST3L2 BOOLEAN Start signal from step3 phase L2
ST3L3 BOOLEAN Start signal from step3 phase L3
ST4L1 BOOLEAN Start signal from step4 phase L1
ST4L2 BOOLEAN Start signal from step4 phase L2
ST4L3 BOOLEAN Start signal from step4 phase L3
ST2NDHRM BOOLEAN Second harmonic detected
DIRL1 INTEGER Direction for phase1
DIRL2 INTEGER Direction for phase2
DIRL3 INTEGER Direction for phase3
STDIRCND INTEGER Binary coded start and directional information

OC4PTOC Group settings (basic)

OC4PTOC Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Off
On
Off Operation Off / On
AngleRCA 40 – 65 Deg 1 55 Relay characteristic angle (RCA)
AngleROA 40 – 89 Deg 1 80 Relay operation angle (ROA)
StartPhSel 1 out of 3
2 out of 3
3 out of 3
1 out of 3 Number of phases required for op (1 of 3, 2 of 3, 3 of 3)
DirMode1 Off
Non-directional
Forward
Reverse
Non-directional Directional mode of step 1 (off, nodir, forward, reverse)
Characterist1 ANSI Ext. inv.
ANSI Very inv.
ANSI Norm. inv.
ANSI Mod. inv.
ANSI Def. Time
L.T.E. inv.
L.T.V. inv.
L.T. inv.
IEC Norm. inv.
IEC Very inv.
IEC inv.
IEC Ext. inv.
IEC S.T. inv.
IEC L.T. inv.
IEC Def. Time
Reserved
Programmable
RI type
RD type
ANSI Def. Time Selection of time delay curve type for step 1
I1> 5 – 2500 %IB 1 1000 Operating phase current level for step 1 in % of IBase
t1 0.000 – 60.000 s 0.001 0.000 Def time delay or add time delay for inverse char of step 1
k1 0.05 – 999.00 0.01 0.05 Time multiplier for the inverse time delay for step 1
IMin1 1 – 10000 %IB 1 100 Minimum operate current for step1 in
% of IBase
t1Min 0.000 – 60.000 s 0.001 0.000 Minimum operate time for inverse curves for step 1
I1Mult 1.0 – 10.0 0.1 2.0 Multiplier for current operate level for step 1
DirMode2 Off
Non-directional
Forward
Reverse
Non-directional Directional mode of step 2 (off, nodir, forward, reverse)
Characterist2 ANSI Ext. inv.
ANSI Very inv.
ANSI Norm. inv.
ANSI Mod. inv.
ANSI Def. Time
L.T.E. inv.
L.T.V. inv.
L.T. inv.
IEC Norm. inv.
IEC Very inv.
IEC inv.
IEC Ext. inv.
IEC S.T. inv.
IEC L.T. inv.
IEC Def. Time
Reserved
Programmable
RI type
RD type
ANSI Def. Time Selection of time delay curve type for step 2
I2> 5 – 2500 %IB 1 500 Operating phase current level for step 2 in % of IBase
t2 0.000 – 60.000 s 0.001 0.400 Def time delay or add time delay for inverse char of step 2
k2 0.05 – 999.00 0.01 0.05 Time multiplier for the inverse time delay for step 2
IMin2 1 – 10000 %IB 1 50 Minimum operate current for step2 in
% of IBase
t2Min 0.000 – 60.000 s 0.001 0.000 Minimum operate time for inverse curves for step 2
I2Mult 1.0 – 10.0 0.1 2.0 Multiplier for current operate level for step 2
DirMode3 Off
Non-directional
Forward
Reverse
Non-directional Directional mode of step 3 (off, nodir, forward, reverse)
Characterist3 ANSI Ext. inv.
ANSI Very inv.
ANSI Norm. inv.
ANSI Mod. inv.
ANSI Def. Time
L.T.E. inv.
L.T.V. inv.
L.T. inv.
IEC Norm. inv.
IEC Very inv.
IEC inv.
IEC Ext. inv.
IEC S.T. inv.
IEC L.T. inv.
IEC Def. Time
Reserved
Programmable
RI type
RD type
ANSI Def. Time Selection of time delay curve type for step 3
I3> 5 – 2500 %IB 1 250 Operating phase current level for step 3 in % of IBase
t3 0.000 – 60.000 s 0.001 0.800 Def time delay or add time delay for inverse char of step 3
k3 0.05 – 999.00 0.01 0.05 Time multiplier for the inverse time delay for step 3
IMin3 1 – 10000 %IB 1 33 Minimum operate current for step3 in
% of IBase
t3Min 0.000 – 60.000 s 0.001 0.000 Minimum operate time for inverse curves for step 3
I3Mult 1.0 – 10.0 0.1 2.0 Multiplier for current operate level for step 3
DirMode4 Off
Non-directional
Forward
Reverse
Non-directional Directional mode of step 4 (off, nodir, forward, reverse)
Characterist4 ANSI Ext. inv.
ANSI Very inv.
ANSI Norm. inv.
ANSI Mod. inv.
ANSI Def. Time
L.T.E. inv.
L.T.V. inv.
L.T. inv.
IEC Norm. inv.
IEC Very inv.
IEC inv.
IEC Ext. inv.
IEC S.T. inv.
IEC L.T. inv.
IEC Def. Time
Reserved
Programmable
RI type
RD type
ANSI Def. Time Selection of time delay curve type for step 4
I4> 5 – 2500 %IB 1 175 Operating phase current level for step 4 in % of IBase
t4 0.000 – 60.000 s 0.001 2.000 Def time delay or add time delay for inverse char of step 4
k4 0.05 – 999.00 0.01 0.05 Time multiplier for the inverse time delay for step 4
IMin4 1 – 10000 %IB 1 17 Minimum operate current for step4 in
% of IBase
t4Min 0.000 – 60.000 s 0.001 0.000 Minimum operate time for inverse curves for step 4
I4Mult 1.0 – 10.0 0.1 2.0 Multiplier for current operate level for step 4

OC4PTOC Group settings (advanced)

OC4PTOC Group settings (advanced)
Name Values (Range) Unit Step Default Description
IMinOpPhSel 1 – 100 %IB 1 7 Minimum current for phase selection in % of IBase
2ndHarmStab 5 – 100 % 1 20 Operate level of 2nd harmonic curr in
% of fundamental curr
I1>Min 5 – 2500 %IB 1 5 Minimum used operating phase current level for step 1 in % of IBase, if I1> is less than I1>Min then I1> is set to I1>Min
I1>Max 5 – 2500 %IB 1 2500 Maximum used operating phase current level for step 1 in % of IBase, if I1> is greater than I1>Max then I1> is set to I1>Max
ResetTypeCrv1 Instantaneous
IEC Reset
ANSI reset
Instantaneous Selection of reset curve type for step 1
tReset1 0.000 – 60.000 s 0.001 0.020 Constant reset time for step 1
tPCrv1 0.005 – 3.000 0.001 1.000 Parameter P for customer programmable curve for step 1
tACrv1 0.005 – 200.000 0.001 13.500 Parameter A for customer programmable curve for step 1
tBCrv1 0.00 – 20.00 0.01 0.00 Parameter B for customer programmable curve for step 1
tCCrv1 0.1 – 10.0 0.1 1.0 Parameter C for customer programmable curve for step 1
tPRCrv1 0.005 – 3.000 0.001 0.500 Parameter PR for customer programmable curve for step 1
tTRCrv1 0.005 – 100.000 0.001 13.500 Parameter TR for customer programmable curve for step 1
tCRCrv1 0.1 – 10.0 0.1 1.0 Parameter CR for customer programmable curve for step 1
HarmBlock1 Off
On
Off Enable block of step 1 from harmonic restrain
I2>Min 5 – 2500 %IB 1 5 Minimum used operating phase current level for step 2 in % of IBase, if I2> is less than I2>Min then I2> is set to I2>Min
I2>Max 5 – 2500 %IB 1 2500 Maximum used operating phase current level for step 2 in % of IBase, if I2> is greater than I2>Max then I2> is set to I2>Max
ResetTypeCrv2 Instantaneous
IEC Reset
ANSI reset
Instantaneous Selection of reset curve type for step 2
tReset2 0.000 – 60.000 s 0.001 0.020 Constant reset time for step 2
tPCrv2 0.005 – 3.000 0.001 1.000 Parameter P for customer programmable curve for step 2
tACrv2 0.005 – 200.000 0.001 13.500 Parameter A for customer programmable curve for step 2
tBCrv2 0.00 – 20.00 0.01 0.00 Parameter B for customer programmable curve for step 2
tCCrv2 0.1 – 10.0 0.1 1.0 Parameter C for customer programmable curve for step 2
tPRCrv2 0.005 – 3.000 0.001 0.500 Parameter PR for customer programmable curve for step 2
tTRCrv2 0.005 – 100.000 0.001 13.500 Parameter TR for customer programmable curve for step 2
tCRCrv2 0.1 – 10.0 0.1 1.0 Parameter CR for customer programmable curve for step 2
HarmBlock2 Off
On
Off Enable block of step 2 from harmonic restrain
I3>Min 5 – 2500 %IB 1 5 Minimum used operating phase current level for step 3 in % of IBase, if I3> is less than I3>Min then I3> is set to I3>Min
I3>Max 5 – 2500 %IB 1 2500 Maximum used operating phase current level for step 3 in % of IBase, if I3> is greater than I3>Max then I3> is set to I3>Max
ResetTypeCrv3 Instantaneous
IEC Reset
ANSI reset
Instantaneous Selection of reset curve type for step 3
tReset3 0.000 – 60.000 s 0.001 0.020 Constant reset time for step 3
tPCrv3 0.005 – 3.000 0.001 1.000 Parameter P for customer programmable curve for step 3
tACrv3 0.005 – 200.000 0.001 13.500 Parameter A for customer programmable curve for step 3
tBCrv3 0.00 – 20.00 0.01 0.00 Parameter B for customer programmable curve for step 3
tCCrv3 0.1 – 10.0 0.1 1.0 Parameter C for customer programmable curve for step 3
tPRCrv3 0.005 – 3.000 0.001 0.500 Parameter PR for customer programmable curve for step 3
tTRCrv3 0.005 – 100.000 0.001 13.500 Parameter TR for customer programmable curve for step 3
tCRCrv3 0.1 – 10.0 0.1 1.0 Parameter CR for customer programmable curve for step 3
HarmBlock3 Off
On
Off Enable block of step 3 from harmonic restrain
I4>Min 5 – 2500 %IB 1 5 Minimum used operating phase current level for step 4 in % of IBase, if I4> is less than I4>Min then I4> is set to I4>Min
I4>Max 5 – 2500 %IB 1 2500 Maximum used operating phase current level for step 4 in % of IBase, if I4> is greater than I4>Max then I4> is set to I4>Max
ResetTypeCrv4 Instantaneous
IEC Reset
ANSI reset
Instantaneous Selection of reset curve type for step 4
tReset4 0.000 – 60.000 s 0.001 0.020 Constant reset time for step 4
tPCrv4 0.005 – 3.000 0.001 1.000 Parameter P for customer programmable curve for step 4
tACrv4 0.005 – 200.000 0.001 13.500 Parameter A for customer programmable curve for step 4
tBCrv4 0.00 – 20.00 0.01 0.00 Parameter B for customer programmable curve for step 4
tCCrv4 0.1 – 10.0 0.1 1.0 Parameter C for customer programmable curve for step 4
tPRCrv4 0.005 – 3.000 0.001 0.500 Parameter PR for customer programmable curve for step 4
tTRCrv4 0.005 – 100.000 0.001 13.500 Parameter TR for customer programmable curve for step 4
tCRCrv4 0.1 – 10.0 0.1 1.0 Parameter CR for customer programmable curve for step 4
HarmBlock4 Off
On
Off Enable block of step 4 from harmonic restrain

OC4PTOC Non group settings (basic)

OC4PTOC Non group settings (basic)
Name Values (Range) Unit Step Default Description
MeasType DFT
RMS
DFT Selection between DFT and RMS measurement
GlobalBaseSel 1 – 12 1 1 Selection of one of the Global Base Value groups

OC4PTOC Monitored data

OC4PTOC Monitored data
Name Type Values (Range) Unit Description
DIRL1 INTEGER 1=Forward
2=Reverse
0=No direction
Direction for phase1
DIRL2 INTEGER 1=Forward
2=Reverse
0=No direction
Direction for phase2
DIRL3 INTEGER 1=Forward
2=Reverse
0=No direction
Direction for phase3
IL1 REAL A Current in phase L1
IL2 REAL A Current in phase L2
IL3 REAL A Current in phase L3

Logics & highlights


Functional overview of OC4PTOC

Functional overview of OC4PTOC

Directional characteristic of the phase overcurrent protection

Directional characteristic of the phase overcurrent protection

Simplified logic diagram for OC4PTOC

Simplified logic diagram for OC4PTOC

OC4 directional release block diagram

OC4 directional release block diagram

Logic for limitation of used operation current value

Logic for limitation of used operation current value

Second harmonic blocking

Second harmonic blocking

Code description for STDIRCND output signal

Code description for STDIRCND output signal
STDIRCND Description
bit 0 (1) General start
bit 1 (2) Direction detected in forward
bit 2 (4) Direction detected in reverse
bit 3 (8) Start in phase L1
bit 4 (16) Forward direction detected in phase L1
bit 5 (32) Reverse direction detected in phase L1
bit 6 (64) Start in phase L2
bit 7 (128) Forward direction detected in phase L2
bit 8 (256) Reverse direction detected in phase L2
bit 9 (512) Start in phase L3
bit 10 (1024) Forward direction detected in phase L3
bit 11 (2048) Reverse direction detected in phase L3

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