FUNCTION CHARACTERISTICS
205
NVA100X-D - Manual - 02 - 2016
Fun_67NS2-3.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
E D C L P >>
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 2
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
R E S E T
t
ED>>def/inv
0
T
t
ED>>RES
Start IED>>
Trip IED>>
TRIP
P
ING
M
ATRIX
(LED
+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 2
Common configurations
Insens-Zone
O F F
O N
U
E
U
E C
3Votype67N
3 V
o
I
I ∙ c o s
Mode67N
≥
M∙threshold
M
Ground directional overcurrent (67N) - Second element logic diagram (IED>>) (sheet 3 of 4)
