Thytronic NA20, Manual, Page: 53 / 208

FUNCTION CHARACTERISTICS
53 NA20 - Manual - 04 - 2022
Binary input INx
T 0
Logic
INx t
ON
INx t
ON
INx t
OFF
T 0
n.o.
n.c.
INx t
OFF
Binary input INx
T 0
Logic
INx t
ON
INx t
ON
INx t
OFF
T 0
n.o.
n.c.
INx t
OFF
Binary input INx
T 0
Logic INx t
ON
INx t
ON
INx t
OFF
T 0
n.o.
n.c.
INx t
OFF
Binary input INx
T 0
Logic INx t
ON
INx t
ON
INx t
OFF
T 0
n.o.
n.c.
INx t
OFF
Block2 IPh
Block2 IPh/IE
ModeBLIN1
T 0
t
B-Iph
46S1_BL-diagram.ai
≥
1
≥ 1
≥ 1
≥ 1
t
B-Iph
t
B-IE
BLK1I2>
&
&
BLK2IN I2>
&
&
Enable (ON
≡
Enable)
I2>BLK1
Block2 input enable (ON ≡ Enable)
Pilot wire input
&
I2>BLK2IN
Block1
BLK2IN-Iph
Start I
2
>
Trip I
2
>
Iph Block2
IE Block2
BLK2IN-IE
tB timeout
Block2 input
tB-K
tB-L
Block1
FROM ANY PROTECTIONS
FROM PHASE PROTECTIONS
OFF
ON IPh
ON IPh/IE
ON IE
BLIN1
I 2> Block2 OUT
I 2>> Block2 OUT
Block1
T 0
t
B-IE
Block2 IE
≥ 1
Block1, Block2
TR
IP
PIN
G
M
AT
RIX
(
LE
D+R
EL
AY
S)
≥ 1
≥
1
Negative sequence overcurrent (46) - Logic diagram of the blocking signals concerning the first element (I2>)
Pilot wire output
TR
IP
PIN
G
M
AT
RIX
(
LE
D+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
&
Block2 output
(ON
≡ Enable)
I2>BLK2OUT
Start I
2
>
≥ 1
T 0
t
F-IPh/IE
T 0
t
F-IPh
T 0
t
F-IE
I > Block2 OUT
BLK2OUT-Iph
BLK2OUT-Iph/IE
BLK2OUT-IE
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
FROM EARTH FAULT PROTECTIONS
I >> Block2 OUT
I >>> Block2 OUT
DthAL1 Block2 OUT
DthAL2 Block2 OUT
Dth Block2 OUT
≥ 1
I
E
>> Block2 OUT
I
E
> Block2 OUT
I
E
>>> Block2 OUT