Thytronic NC020 - Page 43

FUNCTION CHARACTERISTICS
43
NC020 - Manual - 05 - 2022
Fun_50-51-S3.ai
I
EC
t
IE
>>
RES
T0
RESET
t
IE
>>
def
0T
I
E
>>
def
t
IE
>>
RES
Start IE>
Trip IE>>
CB-State
ON≡Enable IE>> overcurrent element
(Pickup within CLP)
(Pickup outside CLP)
&
T 0
t
IECLP>>
IECLP>>Mode
I
ECLP >>def
t
IECLP >>
ON≡Enable
BF Enable
towards BF logic
IE>> BF
&
Trip IE>>
TRIPPING MATRIX (LED+RELAYS)
A
B
C
A =“1”A =“0 or OFF”
Output
t
IECLP>>
IE>> Enable
t
IECLP>>
CB State
CB OPEN CB CLOSED CB OPEN
Output t
IECLP
>>
t
0.1 s
HIGH THRESHOLD/
BLOCK
LOW THRESHOLD/
UNBLOCK
HIGH THRESHOLD/
BLOCK
A = ON - Change setting
B = OFF
C = ON - Element blocking
IE>>TR-K
LED 2
IE>>ST-L
IE>>ST-K
I
EC
≥I
E
>>
def
I
EC
≥ I
ECLP
>>
def
I
E
>>
def
Residual overcurrent (50N/51N) - IE>> element logic diagram
Fun_50-51-S3.ai
I
EC
t
IE
>
RES
T0
RESET
t
IE
>
def
0T
t
IE
>
def
t
IE
>
RES
Start IE>
Trip IE>
CB-State
ON≡Enable IE> overcurrent element
(Pickup within CLP)
(Pickup outside CLP)
&
T 0
t
IECLP
>
IECLP>Mode
I
ECLP >def
t
IECLP >
ON≡Enable
BF Enable
towards BF logic
IE> BF
&
Trip IE>
TRIPPING MATRIX (LED+RELAYS)
A
B
C
A =“1”A =“0 or OFF”
Output
t
IECLP>
IE> Enable
t
IECLP>
CB State
CB OPEN CB CLOSED CB OPEN
Output t
IECLP
>
t
0.1 s
HIGH THRESHOLD/
BLOCK
LOW THRESHOLD/
UNBLOCK
HIGH THRESHOLD/
BLOCK
A = ON - Change setting
B = OFF
C = ON - Element blocking
IE>TR-K
LED 2
IE>ST-L
IE>ST-K
I
EC
≥I
E
>
def
I
EC
≥ I
ECLP
>
def
I
E
>
def
Residual overcurrent (50N/51N) - IE> element logic diagram