Thytronic NC20 User Manual

86
86
NC2 0 - Manual - 01 - 2015
FUNCTION CHARACTERISTICS
Fun_50-51S1.ai
I
L1RMS
I
L2RMS
I
L3RMS
t
>RES
T0
RESET
t
>
0T
≥1
≥1
≥1
t
>def
t
>inv
t
>RES
Start I>
Trip I>
CB-State
ON≡Inhibit (from I>> and/or I>>> overcurrent element)
ON≡Enable I> overcurrent element
(Pickup within CLP)
(Pickup outside CLP)
I> inhibition
Block1, Block2
&
T0
t
CLP>
ICLP>Mode
I
CLP >def
t
CLP >
I
CLP >inv
BF Enable (ON≡Enable)
I>BF
towards BF logic
I> BF
&
Trip I >
TRIPPING MATRIX (LED+RELAYS)
I> Curve
0T
A
B
C
A =“1”A =“0 or OFF”
Output t
CLP>
I> Enable
I> overcurrent element (50/51RMS) block diagram
t
CLP>
CB State CB OPEN CB CLOSED CB OPEN
Output t
CLP>
t
0.1 s
HIGH THRESHOLD/
BLOCK
LOW THRESHOLD/
UNBLOCK
HIGH THRESHOLD/
BLOCK
A = ON - Change setting
B = OFF
C = ON - Element blocking
I>TR-K
I>TR-L
I>ST-L
I>ST-K
≥1
CLP I>
&
State
I>
inv
I
L1RMS
≥ I>
def
I
L1RMS
≥ I>
inv
I
L1RMS
≥ I
CLP
>
(def/inv)
I>
def
&
State
Phase overcurrent (50/51 RMS) - First element logic diagram (I>)
&
(ON≡
Inhibit )
Start I>
I>AL inhibition
I>AL disbyl>

Thytronic NC20 Specifications

General

Brand	Thytronic
Model	NC20
Category	Power distribution unit
Language	English