Thytronic NC020 - Page 45

FUNCTION CHARACTERISTICS
45
NC020 - Manual - 05 - 2022
Fun_59H-S1.ai
V
1
V
2
t
U
>
RES
T0
RESET
t
U
>
def
0T
t
U
>
def
t
U
>
RES
Start U>
Trip U>
CB-State
ON≡Enable U> overcurrent element
(Pickup within CLP)
(Pickup outside CLP)
&
T 0
t
UCLP>>
UCLP>Mode
U
CLP
>
def
t
UCLP >
ON≡Enable
BF Enable
towards BF logic
U> BF
&
Trip U>
TRIPPING MATRIX (LED+RELAYS)
A
B
C
A =“1”A =“0 or OFF”
Output
t
IECLP>
U> Enable
t
UCLP>
CB State
CB OPEN CB CLOSED CB OPEN
Output t
UCLP
>
t
0.1 s
HIGH THRESHOLD/
BLOCK
LOW THRESHOLD/
UNBLOCK
HIGH THRESHOLD/
BLOCK
A = ON - Change setting
B = OFF
C = ON - Element blocking
U>TR-K
LED 3
U>ST-L
U>ST-K
V
1
≥U >
def
V
1
≥U
CLP
>
def
U>
def
Peak overvoltage (59H) - U> element logic diagram
≥1
V
3