Thytronic NV10P - Page 76

76
76
NV10P - Manual - 01 - 2015
CHARACTERISTICS
Logic diagram concerning the fourth threshold (f<<<<) of the underfrequency element - 81U
RESET
t
f
<<<<
def
0T
TRIPPING MATRIX (LED+RELAYS)
t
f
<<<<
def
f<<<< Start
f<<<< Start
f<<<< Trip
f<<<< Trip
f<<<< Trip
BF Enable (ON≡Enable)
towards BF logic
&
f<<<< Block1
f<<<< BF
&
&
&
Enable (ON≡Enable)
Block1 input (ON≡Block)
Block1
Block1
Binary input INx
T0
Logic
INx t
ON
INx t
ON
INx t
OFF
T0
n.o.
n.c.
INx t
OFF
&
(ON≡
Inhibit )
f<< inhibition
f<<disbyf<<<<
&
(ON≡
Inhibit )
f<<< inhibition
f<<<disbyf<<<<
&
(ON≡
Inhibit )
f< inhibition
f<disbyf<<<<
f <<<<
def
f<<<<BF
Fun-F81U_S4.ai
f<<<< ST-K
f<<<< ST-L
f<<<< TR-K
f<<<< TR-L
f<<<<BLK1
&
f < f <<<<
def
U
L1
,U
L2
,U
L3
Max(U
L1...
U
L3
) ≥20%U
n
≥1
(1≡DDI closed)
DDI state
(1≡upstream)
f<<<disbyCB_OPEN
Min(f
UL1,
f
UL2,
f
UL3
)f
UL1,
f
UL2,
f
UL3