Thytronic NC20 - Page 61

61
NC2 0 - Manual - 01 - 2015
FUNCTION CHARACTERISTICS
Fun_46_S2.ai
I
2
RESET
t
2>>def
0T
≥1
Start I2>>
Trip I2>>
CB-State
ON≡Inhibit (from I2>>element)
ON≡Enable I2> unbalance current element
(Pickup within CLP)
(Pickup outside CLP)
I2>inhibition
&
T0
t
2CLP>>
I2CLP>>Mode
I
2CLP >>def
t
2CLP>>
TRIPPING MATRIX (LED+RELAYS)
A
B
C
A =“1”A =“0 or OFF”
Output
t
2CLP>>
I2>> Enable
t
2CLP>
CB State CB OPEN CB CLOSED CB OPEN
Output t
2CLP>>
t
0.1 s
HIGH THRESHOLD/
BLOCK
LOW THRESHOLD/
UNBLOCK
HIGH THRESHOLD/
BLOCK
A = ON - Change setting
B = OFF
C = ON - Element blocking
I2>>ALTR-K
I2>>ALTR-L
I2>>ST-L
I2>>ST-K
≥1
CLP I2>>
I
2
≥ I
2
>>
def
I
2
>>
def
I
2
≥ I
2CLP
>>
def
t
2>>def
Phase unbalance current (46) - second element logic diagram (I2>>)
Block1, Block2
I2>> element (46) block diagram