Fun_67S2.ai
I
L1
I
L1
∙cos
≥1
≥1
≥1
ON≡Inhibit (fromIPD>>> and/or IPD>>>> element)
ON≡Enable IPD>> directional overcurrent element
IPD> inhibition
&
&
&
&
&
I
PDCLP>>def
I
PDCLP>>inv
≥
I
PDCLP
>>
A
B
C =“2/3”
C
Non-directional
(from 74VT)
Non-directional
D =“1/3”
A = Directional
B = Non-directional
Logic67
C
D
IPD> Enable
≥1
CB-State
Start I
2ndh>
Block1, Block2, Block4
T 0
t
PDCLP
>>
&
2nd harmonic restraint enable (ON≡Enable)
I>2ndh-REST
IPDCLP>>Mode
t
PDCLP
>>
A
B
C
A =“1”
IPD> overcurrent directional element (67) block diagram
A = ON - Change setting within CLP
B = OFF - CLP disabled
C = ON - Element blocking within CLP
≥1
CLP IPD>>
IPD> inhibition
&
State
I
PD>>inv
≥
I
PD>>def
≥
I>>
inv
I
PD>>def
Settore
ThetaP>
Settore
Settore
&
State
Mode67
I
L2
I
L2
∙cos
I
L3
I
L3
∙cos
I
L1
I
L2
I
L3
≥1
I
PDCLP>>def
I
PDCLP>>inv
≥
I
PDCLP>
&
State
I
PD>>inv
≥
I
PD>>def
≥
I>>
inv
I
PD>>def
&
State
≥1
Block by 74VT (ON≡Block)
Internal or external
OFF
74VT
74VTint/ext67
A =“0 or OFF”
t
PD>RES
T0
RESET
t
PD>>
0T
t
PD>>inv
t
PD>>RES
IPD>disby IPD>>
Start IPD>>
Start IPD>>
Trip IPD>>
TRIPPING MATRIX
(LED+RELAYS)
I
PD>>
Curve
0T
IPD>>TR-K
IPD>>TR-L
IPD>>ST-L
IPD>>ST-K
t
PD>>def
D
A
B
Input U
31
Input U
23
Input U
12
Phase directional overcurrent (67) - Second element logic diagram (IPD>>)
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