Thytronic Pro-N NVA100X-D - Page 148

148
NVA100X-D - Manual - 02 - 2016
FUNCTION CHARACTERISTICS
t
-I/U>RES
t
-I/U>def
I-I/U> ST-K
I-I/U> TR-K
I-I/U> TR-L
I-I/U> ST-L
F_51V-VC_S1.ai
U
12
U
23
≤U
-I/U
<
U
23
I
L1L
I
L2L
U
31
I
L1L
> threshold
I
L2L
> threshold
“U ≤ U
-I/U
<” “U > U
-I/U
<”
U
-I/U
<
I
-I/U>def
K
KI
-I/U
>
I
-I/U
>
from I-51V>> element (ON≡Inhibit)
I-51V> inhibition
&
&
&
t
-I/U>RES
T0
RESET
t
-I/U>def
0T
I-I/U> Start
I-I/U> Trip
74VT Block
VT fault (74VT)
(=0 without fault)
I-I/U> Trip
BF Enable (ON≡Enable)
BF Element
towards BF logic
I-I/U> _OUT
&
TRIPPING MATRIX (LED+RELAYS)
U
31
≤U
-I/U
<
U
12
≤U
-I/U
<
≥1
≥1
Block1, Block2
I-I/U> element (51V) Block diagram
I
L3L
I
L3L
> threshold
Voltage controlled overcurrent (51V) - First element logic diagram