129
T
e
r
m
i
n
a
t
i
o
n
-
D
r
a
w
-
o
u
t
B
r
e
a
k
e
r
s
Popular Copper Termination
Horizontal (with Terminal adaptor)
Vertical (with Terminal adaptor)
Frame
Size
6 mm
-
10 mm
100 - 2 runs
12 mm
-
6 mm
-
10 mm
100 - 2 runs
12 mm
-
Rating
(A)
2500
3200
2000
(1)
3200
Copper cross
section as per IEC
(in sq. mm)
-
-
80 - 4 runs
-
80 - 4 runs
-
2
F
r
a
m
e
-
2
:
4
0
0
-
3
2
0
0
A
N
a
n
d
4
0
0
-
4
0
0
0
A
S
/
H
Note: Above table is based on extensive study of popular bus-bar sizes used to terminate Air Circuit Breakers. However other bus-
bar sizes (in terms of thickness & width) can also be used to achieve bus-bar cross section recommended by IS & IEC. De-rating of
switchgear depends upon various factors such as cross section area, orientation and material of bus bar, healthiness of bus-bar
joints, panel construction, and ventilation, etc.
*Not as per standard but generally followed
# Recommended for Bus coupler application only
F
r
a
m
e
-
3
:
4
0
0
-
6
3
0
0
A
H
/
V
Note: Above table is based on extensive study of popular bus-bar sizes used to terminate Air Circuit Breakers. However other bus-
bar sizes (in terms of thickness & width) can also be used to achieve bus-bar cross section recommended by IS & IEC. De-rating of
switchgear depends upon various factors such as cross section area, orientation and material of bus bar, healthiness of bus-bar
joints, panel construction, and ventilation, etc.
Popular Copper Termination
Horizontal (with Terminal adaptor)
Vertical (with Terminal adaptor)
Frame
Size
6 mm
10 mm
12 mm
6 mm
10 mm
12 mm
Rating
(A)
5000
6000*
Copper cross section
as per IEC
(in sq. mm)
3
6300
7200*
150 - 3 runs
125 - 4 runs
150 - 4 runs
125 - 4 runs
150 - 4 runs
-
4000
4000*
-
-
-
-
-
Vertical termination recommended
#
150 - 4 runs
160 - 5 run
160 - 7 run
#
4000
(2)
4000
(1)
-
-
-
-
100 - 4 runs
150 - 3 runs
100 - 4 runs
(1) Not as per standard but generally followed.
(2) Fr-2 4000A recommended for Top HorBottom Vertical & Top VBottom Vertical configurations only.
130
T
e
r
m
i
n
a
t
i
o
n
-
D
r
a
w
-
o
u
t
B
r
e
a
k
e
r
s
UW1-08
UW1-10
UW1-12
UW1-16
V
e
r
s
i
o
n
s
N
S
H
N
S
H
N
S
H
N
S
H
800
800
800
1000
1000
1000
1250
1250
1250
1600
1600
1600
800
800
800
1000
1000
1000
1250
1250
1250
1600
1600
1600
800
800
800
1000
1000
1000
1250
1250
1250
1530
1600
1600
800
800
800
1000
1000
1000
1250
1250
1250
1450
1550
1600
800
800
800
1000
1000
1000
1250
1250
1250
1360
1460
1600
C
u
r
r
e
n
t
c
a
r
r
y
i
n
g
c
a
p
a
c
i
t
y
a
t
d
i
f
f
e
r
e
n
t
t
e
m
p
e
r
a
t
u
r
e
(
T
)
F
r
a
m
e
s
i
z
e
&
c
u
r
r
e
n
t
r
a
t
i
n
g
O
4
0
C
O
5
0
C
O
5
5
C
O
6
0
C
O
7
0
C
C
u
r
r
e
n
t
c
a
r
r
y
i
n
g
c
a
p
a
c
i
t
y
w
i
t
h
c
o
p
p
e
r
a
s
b
u
s
-
b
a
r
m
a
t
e
r
i
a
l
&
V
e
r
t
i
c
a
l
c
o
n
f
i
g
u
r
a
t
i
o
n
Please refer to Pages 127-129 to get the corresponding bus-bar cross section area required with different current rating of
Air Circuit Breaker.
N
o
t
e
:
The values indicated in the above tables are for general guideline for product selection. These values have been
extrapolated from test data and theoretical calculations. They cannot replace practical industrial application or a temperature rise
test. However de-rating of switchgear depends on others factors such as cross section area, orientation and material of bus-bar,
healthiness of bus-bar joints, panel construction, and ventilation, etc.
T
e
m
p
e
r
a
t
u
r
e
D
e
r
a
t
i
n
g
o
f
O
M
E
G
A
A
C
B
s
C
u
r
r
e
n
t
c
a
r
r
y
i
n
g
c
a
p
a
c
i
t
y
a
t
d
i
f
f
e
r
e
n
t
t
e
m
p
e
r
a
t
u
r
e
s
0
Omega Air Circuit Breaker can operate at higher temperatures than the reference temperature of 40 C as prescribed in IS & IEC
standards, under certain installation conditions. However in some cases current-carrying capacity needs to be reduced in order to
follow temperature rise limits and safe working conditions.
The table below shows the current carrying capacity of U-POWER Omega ACB’s where T = temperatures measured around the
rear connections of the AIR Circuit Breaker.
S
H
2000
2000
2000
2500
2000
2000
2000
2500
2000
2000
2000
2500
2000
2000
2000
2500
2000
2000
2000
2500
UW1-20
UW2-25
N
N/S/H
UW2-32
UW3-40
UW3-50
UW3-63
N/S/H
S/H
3200
4000
4000
5000
6300
3200
4000
4000
5000
6130
3200
4000
4000
5000
5840
3200
3900
4000
5000
5540
3050
3600
3850
4770
5230
H/V
H/V
H/V
All Dimensions in mm
UW2-40
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 ...
