FUNCTION CHARACTERISTICS
107
NVA100X-D - Manual - 02 - 2016
Logical block (Block1)
If the
I2AL>BLK1
and/or
I2>>BLK1
enabling parameters are set to
ON
and a binary input is
designed for logical block (Block1), the concerning element is blocked off whenever the given input
is active.
[1]
The enabling parameters are available inside the
Set \ Profi le A(or B) \ Negative se-
quence overcurrent - 46G \
I2AL> Element
(
I2>> Element)
menus, while the
Block1
function must
be assigned to the selected binary input inside the
Set \ Board1(2) inputs \ Binary input IN1-1...INx-x
menus.
All the parameters can be set separately for
Profi le A
and
Profi le B
.
Block3
The 46G element is disabled (with start of cooling timer) when:
the measured frequency becomes lower than 20 Hz or higher than 70 Hz or
all the phase voltages
U
L1
,
U
L2
,
U
L3
are lower than 1%
E
n
or
all the phase currents
I
L1
,
I
L2
,
I
L3
are lower than 15%
I
n
.
Note 1 The exhaustive treatment of the logical block (Block 1) function may be found in the “Logic Block” paragraph inside
CONTROL AND MONITOR-
ING
section
•
•
•
Fun-F46G_AL.ai
I
2
>≥
I
AL
>
&
RESET
t
2AL>def
0
T
TR
IP
P
ING
M
ATR
IX
(LED
+R
EL
AY
S
)
I
2AL>def
t
2AL>def
I2AL> Start
I
2AL
>ST-K
I
2AL
>TR-K
I
2AL
>>TR-L
I
2AL
>ST-L
I
2AL
> Start
I
2AL
> Trip
I2AL> Trip
≥
1
(ON
≡
Inhibit)
Block3
I2AL> Block1
I
2
I2>> Trip
=0 if 20≤f≤70 Hz
&
&
&
Enable (ON
≡
Enable)
Block1 input (ON
≡
Block)
Block1
Block1
Block1
Binary input INx
T
0
Logic
INx
t
ON
INx
t
ON
INx
t
OFF
T
0
n.o.
n.c.
INx
t
OFF
ON
≡
Enable
I
AL
> element
I
2AL
> Enable
Logic diagram concerning the Alarm threshold of the negative sequence overcurrent element - 46G
Fun-F46G_S1.ai
I
2
≥
I
2
>>
inv
&
≥1
TRIP
P
ING
M
ATRIX
(LED
+R
EL
AY
S
)
I
2
>>
inv
I2>> Start
I2>> Start
I2>> Trip
Block3
I
2
I
2
=0 if 20≤f≤70 Hz
Reset LEDs
I2>> Start=OFF
I2>> Start=ON
I
2
>>
inv
RESET
K
heat
t
2max
I
B
t
2min
0
T
0
T
K
cool
Binary input INx
T
0
Logic
INx
t
ON
INx
t
ON
INx
t
OFF
T
0
n.o.
n.c.
INx
t
OFF
I
>>ST-K
I
>>TR-K
I
>>TR-L
I
>>ST-L
ON
≡
Enable
I
2
>> element
I
2
>> Enable
BF Enable (ON
≡
Enable)
I2>>BF
I2>> BF
&
I2>> Trip
towards BF logic
Logic diagram concerning the trip threshold of the negative sequence overcurrent element - 46G
I2>> Start
I2>> Trip
I2>> Block1
Binary input INx
T
0
Logic
INx
t
ON
INx
t
ON
INx
t
OFF
T
0
n.o.
n.c.
INx
t
OFF
&
&
&
Enable (ON
≡
Enable)
I2>>BLK1
Block1
Block1
Block1
