Thytronic NV10B - Undervoltage Protection First Threshold Logic

CHARACTERISTICS
47
NV10B - Manual - 04 - 2022
Fun-F27_S1.ai
Logic diagram concerning the first threshold (U<) of the undervoltage element - 27
U< Inhibition
(ON≡ Inhibit )
&
U< Curve
0T
RESET
t
U<
0T
TRIPPING MATRIX (LED+RELAYS)
t
U<def
t
U<inv
Start U<
U<ST-K
Start U<
U<TR-K
U<ST-L
U<TR-L
Trip U<
Trip U<
Trip U<
BF Enable (ON≡ Enable)
U<BF
towards BF logic
&
BLK1U<
U< BF
&
&
&
Enable (ON≡ Enable)
Block1 input (ON≡ Block)
U<BLK1
Block1
Block1
Logic27
≥1
&
U
L1
U
L2
U
L3
Binary input INx (x=1...8-16)
T 0
Logic
INx t
ON
INx t
ON
INx t
OFF
T0
n.o.
n.c.
INx t
OFF
≥ 1
&
State
U<
inv
U ≤ U<
def
U ≤ U<
inv
U<
def
&
State
ON≡ Enable U< undervoltage element
U< Enable