Thytronic NC020 - Page 36

FUNCTION CHARACTERISTICS
36
NC020 - Manual - 05 - 2022
46N-S1.ai
I
NC
RESET
t
IN>def
0T
Start IN>
Trip IN>
CB-State
ON≡Enable IN> unbalance current element
(Pickup within CLP)
(Pickup outside CLP)
&
T 0
t
INCLP>
INCLP>
I
NCLP >def
t
INCLP>
TRIPPING MATRIX (LED+RELAYS)
A
B
C
A =“1”A =“0 or OFF”
Output
t
INCLP>
IN> Enable
t
INCLP>
CB State CB OPEN CB CLOSED CB OPEN
Output t
INCLP>
t
0.1 s
HIGH THRESHOLD/
BLOCK
LOW THRESHOLD/
UNBLOCK
HIGH THRESHOLD/
BLOCK
A = ON - Change setting
B = OFF
C = ON - Element blocking
IN>TR-K
LED 2
IN>ST-L
IN>ST-K
I
NC
≥ I
N
>
def
I
N
>
def
I
NC
≥ I
NCLP >def
t
IN>def
Neutral unbalance current (46N) - First element logic diagram (IN>)
46N-S2.ai
I
NC
RESET
t
IN>>def
0T
Start IN>>
Trip IN>>
CB-State
ON≡Enable IN>> unbalance current element
(Pickup within CLP)
(Pickup outside CLP)
&
T 0
t
INCLP>>
INCLP>>
I
NCLP >>def
t
INCLP>>
TRIPPING MATRIX (LED+RELAYS)
A
B
C
A =“1”A =“0 or OFF”
Output
t
INCLP>>
IN>> Enable
t
INCLP>>
CB State CB OPEN CB CLOSED CB OPEN
Output t
INCLP>>
t
0.1 s
HIGH THRESHOLD/
BLOCK
LOW THRESHOLD/
UNBLOCK
HIGH THRESHOLD/
BLOCK
A = ON - Change setting
B = OFF
C = ON - Element blocking
IN>>TR-K
LED 2
IN>>ST-L
IN>>ST-K
I
NC
≥ I
N
>>
def
I
N
>>
def
I
NC
≥ I
NCLP >>def
t
IN>>def
Neutral unbalance current (46N) - Second element logic diagram (IN>>)