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FUNCTION CHARACTERISTICS
245
NVA100X-D - Manual - 02 - 2016
Block2out diagram
Pilot wire output
BLOUT1
TRIP
P
ING
M
ATRIX
(
LE
D
+R
E
LA
Y
S
)
ModeBLOUT1
A
B
C
D
≥
1
t
F-IPh
t
F-IPh/IE
t
F-IE
ST-Iph BLK2
ST-IE BLK2
≥
1
T
0
t
F-IPh/IE
T
0
t
F-IPh
T
0
t
F-IE
BLK2OUT-Iph
BLK2OUT-Iph/IE
BLK2OUT-IE
&
xxBLK2OUT
Start
xx
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
87T
Block2 OUT
Start
87T
&
Block2 output
(ON
≡
Enable)
87TBLK2OUT
Block4-in-out-diagram
Logic diagram of the logic blocking signals
(Block4)
t
FI-Iph
ST-IE BLK4
ST-Iph BLK4
≥
1
≥
1
t
FI-IE
Block4 OUT
≥
1
T
0
t
FI-Iph
T
0
t
FI-IE
xx
Block4 OUT
Block4
A = IN
B = OFF
C = OUT
B
C
“0”
“0”
A = IN
B = OFF
C = OUT
87TBLK4
Start
87T
C
B
A
“0”
“0”
Block4 enable
A = IN
B = OFF
C = OUT
xxBLK4
Start
xx
C
B
A
“0”
“0”
xxBLK4
A
87T
Block4
All other BLK2OUT outputs
of ground elements
(see BLK2OUT chapter)
≥
1
All BLK2OUT outputs
of phase elements
(see BLK2OUT chapter)
All BLK4 I/O
of phase elements
(see BLK4chapter)
All BLK4 I/O
of ground elements
(see BLK4chapter)
Differential protection (87G-87M-87T) - Logic diagram of the blocking signals