5) Neutral Configurator :
Neutral configurator helps in customization of Neutral Sequence or Phase Sequence at the Air Circuit Breaker end.
Neutral Configurator can be connected with the breaker On-site. It enables user to customize the phase sequence
at breaker end without any design modication required in panel. In case of standard phase sequence the output of the
Breaker CTs directly connected to the MTX Release with the help of Wire harness. When Neutral Configurator
is being used it will be connected to the MTX Release and harness wire will be connected to the other end of the
Neutral Configurator. It can be used irrespective of Breaker frame sizes, Ratings and MTX Release types. Neutral
configurator is compatible with 100%N systems only.
N
o
t
e
1
:
W
h
i
l
e
N
e
u
t
r
a
l
C
o
n
f
i
g
u
r
a
t
o
r
i
s
b
e
i
n
g
u
s
e
d
f
o
r
i
n
t
e
r
c
h
a
n
g
i
n
g
N
e
u
t
r
a
l
P
o
l
e
w
i
t
h
a
n
y
o
t
h
e
r
p
o
l
e
,
t
h
e
C
t
s
o
f
r
e
s
p
e
c
t
i
v
e
P
o
l
e
s
m
u
s
t
a
l
s
o
b
e
i
n
t
e
r
c
h
a
n
g
e
d
.
T
h
e
r
e
f
o
r
e
C
T
o
f
t
h
e
o
l
d
N
e
u
t
r
a
l
-
P
o
l
e
s
h
o
u
l
d
n
o
w
b
e
p
l
a
c
e
d
i
n
n
e
w
N
e
u
t
r
a
l
P
o
l
e
.
N
o
t
e
2
:
F
o
r
R
e
l
e
a
s
e
s
M
T
X
3
.
5
/
3
.
5
E
C
/
3
.
5
H
/
4
.
5
V
o
l
t
a
g
e
T
a
p
p
i
n
g
I
n
p
u
t
a
t
S
I
C
C
o
n
t
a
c
t
s
V
0
(
N
)
,
V
1
(
R
)
,
V
2
(
Y
)
&
V
3
(
B
)
s
h
o
u
l
d
a
l
s
o
b
e
i
n
t
e
r
c
h
a
n
g
e
d
i
n
a
c
c
o
r
d
a
n
c
e
w
i
t
h
u
s
e
d
N
e
u
t
r
a
l
C
o
n
f
i
g
u
r
a
t
o
r
.
Available in configuration of-
• NRYB to RYBN
• NRYB to NBYR
• NRYB to BYRN
E
x
t
e
r
n
a
l
N
e
u
t
r
a
l
C
T
s
6
)
In case of TPN system, NCT must be used to avoid nuisance tripping of the three pole ACB under unbalanced load
condition.
In case of current unbalance,
IR + IY + IB + IN = 0, but
IR + IY + IB
≠
0
In absence of NCT, the EF enabled Protection & Control Unit will follow the second equation resulting in false indication of
EF, and will trip if it exceeds threshold value, causing undesirable interruptions in the Electrical system and deterioration of
ACB life.
Installation of NCT can also be used for Neutral Overload Protection for sensing overcurrent flowing through the neutral
conductor.
Load
R
Y
B
N
NCT
3 Pole ACB
8
1
Accessories
Neutral Configurator
MTX-1.0/1G/1Gi/1.5G/1.5Gi
3.5/3.5EC/3.5H/4.5
CT Wire Harness
Current
I1 : 430A
I2 : 430A
I3 : 430A
For Earth fault protection and protection of Neutral against overloads, Neutral CT is required. For 4-Pole breakers, the
CT is provided inside the breaker, to be used on 4 wire system whereas for 3-pole breakers, external CT is available
separately.
It is important that with OMEGA System of breaker, special neutral CTs supplied by E&A are used.
M12 / Equivalent bolts to be used for links termination.
Tightening torque: 3.2 kgfm
All Dimensions in mm
(ref. Page 14 for Frame size details)
TERMINAL THICKNESS 30 mm.
F
r
a
m
e
S
i
z
eR
a
t
i
n
g
5000/6300
3
(ref. Page 14 for Frame size details)
TERMINAL THICKNESS 30 mm.
F
r
a
m
e
S
i
z
eR
a
t
i
n
g
2000/2500/
3200/4000
2 & 3
(ref. Page 14 for Frame size details)
TERMINAL THICKNESS 30 mm.
1
F
r
a
m
e
S
i
z
e
2000/2500
R
a
t
i
n
g
(ref. Page 14 for Frame size details)
TERMINAL THICKNESS 15 mm.
F
r
a
m
e
S
i
z
eR
a
t
i
n
g
1, 2 & 3
1, 2 & 3
400/630/800/
1000/1250/1600
40
13
42
19
72
19
90
42
Ns3
Ns4
65
12.5
45
.5
72
19
65
45
.5
19
Ns3
Ns4
40
13
22.15
27
27
45
.5
45
.5
19
72
98.3
19
Ns3
Ns4
13
45
.5
45
.5
19
72
65
145
40
40
12.5
13
19
40
Ns3
Ns4
S3
N
S4
N
NS
3
NS
4
NS3
NS4
NS
3
4
NS
82
Accessories
Summary of Contents for OMEGA
Page 2: ...Stabilise systems with technology ...
Page 4: ...Change course quickly ...
Page 6: ...Match performance with prudence ...
Page 8: ...Adopt technological brilliance ...
Page 10: ...Keep an eye on upkeep ...
Page 26: ...Matrix Protection Control Units T UW M X4 5 ...
Page 70: ...Accessories ...
Page 84: ...Control Circuit Wiring ...
Page 92: ...Mounting Termination ...
Page 135: ...SP 50567 R5 ...
