FUNCTION CHARACTERISTICS
189
NVA100X-D - Manual - 02 - 2016
fault-64REF
menu.
[1]
The following block criteria are available:
Logical block (Block1)
If the
64REF-BLK1
enabling parameter is set to
ON
and a binary input is designed for logical block
(Block1), the element is blocked off whenever the given input is active.
[2]
The enabling parameters
are available inside the menu
Set \ Profi le A(or B) \ Low impedance restricted ground fault - 64REF
menu, 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.
Selective block (Block2)
For the protective element the output selective block may be set.
The logic selectivity function may be performed by means any combination of the following I/O:
One committed pilot wire output (BLOUT1).
One or more output relays designed for output selective block.
Only when the committed pilot wire are used the continuity check of the pilot wire link is active.
Use of committed pilot wire output BLOUT1:
The information about phase or phase+earth block may be select programming the
ModeBLOUT1
parameter (
OFF - ON IPh - ON IPh/IE - ON IE
) inside
Set \ Profi le A(or B) \ Selective block-
BLOCK2 \ Selective block OUT
menus.
Use of output relay (K1...K6):
If the
64REF-BLK2OUT
enable parameter is set to
ON
and a output relay is designed for selective
block (Block2), the protection issues a block output by phase elements (BLK2OUT-Iph) or by any pro-
tection element (BLK2OUT-Iph/IE), whenever the given element (Start 64REF) becomes active. The
enable
64REF-BLK2OUT
parameter (
ON
or
OFF
) is available inside the
Set \ Profi le A(or B) \ Low
impedance restricted ground fault - 64REF
, while the
BLK2OUT-Iph-K, BLK2OUT-Iph/IE-K
and/or
BLK2OUT-IE-K
output relays and LEDs (
BLK2OUT-Iph-L, BLK2OUT-Iph/IE-L
e/o
BLK2OUT-IE-L
) must be select inside the
Set \ Profi le A(or B) \ Selective block-BLOCK2 \ Selec-
tive block OUT
menu.
Note 1 The common settings concerning the Breaker failure protection are adjustable inside the
Breaker Failure - BF
menu.
Note 2 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_49_AL.ai
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)
64REF-BLK1
Block1
Block1
Block1
Block1
Pilot wire output
TRIP
P
ING
M
ATRIX
(LED
+R
EL
AY
S
)
ModeBLOUT1
A
B
C
D
BLOUT1
Block2 output
≥
1
t
F-IPh
t
F-IPh/IE
t
F-IE
ST-Iph BLK2
ST-IE BLK2
T
0
t
F-IPh/IE
T
0
t
F-IPh
T
0
t
F-IE
BLK2OUT-Iph
BLK2OUT-Iph/IE
BLK2OUT-IE
&
Block2 output
(ON
≡
Enable)
64REF-BLK2OUT
Start
64REF
64REF
Block2 OUT
A = OFF
B = ON IPh
C = ON IPh/IE
D = ON IE
BLK2OUT-IPh-K
BLK2OUT-IPh-L
BLK2OUT-IPh/IE-K
BLK2OUT-IPh/IE-L
BLK2OUT-IE-K
BLK2OUT-IE-L
R E S E T
t
REF
>
0
T
t
REF
>
Start 64REF>
Trip 64REF>
ON
≡
Enable
&
64REF-ST-K
64REF-ST-L
64REF-T
К
-K
64REF-T
К
-L
TR
IP
P
ING
M
ATR
IX
(LED
+R
EL
AY
S
)
64REF-Enable
Start 64REF>
Start 64REF>
Trip 64REF>
I
R E F
>
I
E S
≤
4
I
R E F
>
I
E1 ≥
I
REF
> ·
I
ES
+ [
I
REF
>/[1-(
I
ES
/4 ·
I
REF
>)
20
]
I
E 1
I
E C H
BLK1IE>>
&
&
All other BLK2OUT outputs
of ground elements
(see BLK2OUT chapter)
≥
1
All BLK2OUT outputs
of phase elements
(see BLK2OUT chapter)
≥
1
Restricted earth fault protection - logic diagram (46REF)
