Thytronic NA30

FUNCTION CHARACTERISTICS
105
NA30 - Manual - 04 - 2022
Fun_67NS4-3.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
T0
RESET
t
ED>>>>def
0T
t
ED>>>>RES
Start IED>>>>
Trip IED>>>>
TRIPPING MATRIX (LED+RELAYS)
IED>>>>TR-K
IE>>>>TR-L
IED>>>>ST-L
IED>>>>ST-K
t
ED>>>>def
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) - Fourth element logic diagram (IED>>>>) (sheet 3 of 4)