FUNCTION CHARACTERISTICS
93
NA30 - Manual - 04 - 2022
Fun_67NS1-3.ai
ON
≡
Enable IED> directional earth fault
&
BF Enable (ON
≡
Enable)
I
ED>
BF
towards BF logic
I
ED>
BF
&
Trip IED>
A
B
Non-directional
(from 74VT)
Non-directional
A = Directional B = Non-directional
IED> Enable
≥
1
CB-State
Block1, Block2, Block4
T
0
t
CLP>
IEDCLP>Mode
t
EDCLP>
A
B
C
A =“1”
A =“0 or OFF”
IED> overcurrent directional element (67N) block diagram (sheet 4)
A = ON - Change setting within CLP
B = OFF - CLP disabled
C = ON - Element blocking within CLP
≥
1
CLP IED>
I
E
I
EDCLP>def
≥
I
EDCLP
>def
&
State
≥
I
ED>def
I
ED>def
Block by 74VT
(ON
≡
Block)
Internal or external
OFF
74VT
74VTint/ext67N
t
ED>RES
T
0
RESET
t
ED>def/inv
0
T
t
ED>RES
Start IED>
Trip IED>
TR
IP
PIN
G
M
AT
RIX
(
LE
D+R
EL
AY
S)
I
ED>
Curve
0
T
IED>TR-K
IE>TR-L
IED>ST-L
IED>ST-K
t
ED>def
t
ED>inv
A
B
(sheet 1)
D =“modulo”
Mode67N
C
D
D =“modulo” C =“proiezione”
C
D
M
(sheet 2)
C =“proiezione”
I
E
Common configurations
Insens-Zone
OFF
ON
U
E
U
EC
3Votype67N
3V
o
I
I∙cos
Mode67N
≥
M∙threshold
M
Ground directional overcurrent (67N) - First element logic diagram (IED>) (sheet 3 of 4)
