Thytronic DMC3S - Page 73

73
DMC3S - Manual - 08 - 2021
Fun_67NS1-3.ai
ON≡Enable IED> directional earth fault
&
IED> Enable
t
ED>RES
T0
RESET
t
ED>
0T
t
ED>RES
Start IED>
Trip IED>
TRIPPING MATRIX (LED+RELAYS)
I
ED>
Curve
0T
IED>TR-K
IE>TR-L
IED>ST-L
IED>ST-K
t
ED>inv
Mode67N
C
D
C
D
M
I
E
Insens-Zone
OFF
ON
U
E
U
EC
3Votype67N
3V
o
I
I∙cos
Mode67N
≥ M∙threshold
M
Common congurations
≥1
Start I
2ndh>
Block1, Block2
&
2nd harmonic restraint enable (ON≡Enable)
I>2ndh-REST
&
EnTcIED>def
t
ED>def
t
CIED>def
t
atcIED
>
def
t
atcIED
>
def
CB control
0 = t
ED>def
1 = t
CIED>def
ON≡Inhibit (from 74VT element)
74VT inhibition
“0”
“1”
CB control
tatcIPD>def
tcIPD>def
tPD>def tPD>def
BREAKER OPEN
Breaker state
Shrink time enable
Threshold timer
t
BREAKER CLOSED
OFF
Shrink time trip
ON
Functional diagram of the rst threshold (IED>) of the ground directional overcurrent function 67N (sheet 3 of 3)
D =“modulus” (page 1)
C =“projection” (page 2)