W
a
t
t
-
l
o
s
s
D
a
t
a
o
f
O
M
E
G
A
A
C
B
s
Watt loss plays an important role in the electrical performance of Air Circuit Breaker. Factors like overall dimension, rated current
carrying capacity of Bus-bar and watt loss of apparatus attached to the Air Circuit Breaker also plays an important role in
calculation of watt loss data.
Total watt loss value is measured at rated current (In) of 3 Pole Air Circuit Breaker at 50/60 Hz. (W=3xInˆ2xR), where
R is the resistance measured across the upper & lower terminated of ACB.
131
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
All Dimensions in mm
A
l
t
i
t
u
d
e
d
e
r
a
t
i
n
g
o
f
O
M
E
G
A
A
C
B
s
As altitude rise from sea level, the density of that air reduces dramatically. Reduced air density at altitudes greater
than 2000 meters affects the ability of a circuit breaker to transfer heat and interrupt faults compared with sea
level.The ability of fault interruption reduces with the increase of altitute because di-electric strength of air also
reduces with density.
A
l
t
i
t
u
d
e
d
e
r
a
t
i
n
g
Altitude
Rated service voltage (at 50/60 Hz)
O
Rated Uninterrupted Current at 40 C
Impulse withstand voltage
Rated insulation voltage
H
U
e
I
n
U
imp
U
i
(m)
(V)
(A)
(kV)
(V)
<2000
U
e
I
n
12
1000
3000
0.9U
e
0.98I
n
11
900
4000
0.8U
e
0.96I
n
10
780
5000
0.7U
e
0.94I
n
8
700
F
r
a
m
e
S
i
z
e
&
C
u
r
r
e
n
t
R
a
t
i
n
g
UW1-08
UW1-10
UW1-12
UW1-16
UW1-20
F
o
r
d
r
a
w
-
o
u
t
A
C
B
(
W
a
t
t
)
N
100
160
210
325
440
S
50
65
100
160
390
H
35
50
65
100
220
V
560
UW2-25
UW2-32
UW3-40
UW3-50
UW3-63
560
465
600
500
750
1000
500
750
1000
600
600
UW2-40
770
770
132
ACB Ordering Information
Draw-out version :
Omega ACBs with UW-MTX release will have inbuilt-
Current Metering (MTX1.5G/1.5Gi/3.5/3.5EC/3.5H/4.5), Common Fault Indication microswitch, 4NO+4NC Aux. contacts, Smart-racking
shutter, Safety shutter assembly, Racking Handle, Door sealing frame, Pad-locking arrangement for ON/OFF button, Rating Error Preventer &
Arc shield (Please contact Sales Office for details about 800V/1000V AC ACBs).
A) For ratings upto 1600A, one side vertical terminal adaptors (Bottom) for Frames 1, 2 & 3.
B) For ratings 2000A & above, both side vertical terminal adaptors (Top & Bottom) for Frames 1, 2 & 3.
C) For ratings 4000A (Fr2 & Fr3) & 5000A(Fr3) replace 13th digit of ACB cat no with (recommended for Buscoupler only)
X : For Top Horizontal (Long) & Bottom Vertical for Fr2 & Fr3
Y : For Top & Bottom Horizontal (Long) for Fr3. H-H Termination not recommended for 4000A Fr2.
D) For rating 4000A & above, operation counter inbuilt for Frames 2 & 3 both.
Fixed Version :
Omega ACBs with UW-MTX release will have inbuilt-
Current Metering (MTX1.5G/1.5Gi/3.5/3.5EC/3.5H/4.5), Common Fault Indication microswitch, 4NO+4NC Aux. contacts, Door sealing frame &
Pad-locking arrangement for ON/OFF push button.
A) For ratings upto 1600A, one side vertical terminal adaptors (Bottom) for Frames 1, 2 & 3.
B) For ratings 2000A & above, both side vertical terminal adaptors (Top & Bottom) for Frames 1, 2 & 3.
C) For ratings 4000A & above, operation counter inbuilt for Frames 2 & 3 both.
Electrically operated ACB includes ECD (240V AC), CR (240V AC) & SR (240V AC OR 24V DC).
Please Note :
(1)
For Icw values please refer product catalogue
(2)
Other options of control voltage are available as accessory
(3)
Temperature protection is available in UW-MTX3.5/3.5EC/3.5H/4.5
Frame Size
Frame -
1
Frame - 2
Frame - 3
1
2
3
Current Ratings
400A
630A
800A
1000A
1250A
1600A
2000A
(4)
2500A
3200A
4000A
5000A
6300A
04
06
08
10
12
16
20
25
32
40
50
63
(1)
Selection for Breaking Capacity (Icu=Ics)
50kA (Fr-1 upto 2000A & Fr-2 upto 3200A)
65kA (Fr-1 & Fr-2)
80kA (Fr-1, Fr-2 & Fr-3)
100kA (Fr-3)
N
S
H
V
(5) (7)
UW 1 08 N X D 1 2 9 0 0
OMEGA 800A Fr-1 50kA 3P EDO UW-MTX1.5G
Selection for P&C Units
B/C (w/o protection)
UW - MTX1.0
UW - MTX1G
UW - MTX1Gi
UW - MTX1.5G
UW - MTX1.5Gi
UW-MTX3.5
(6)
UW-MTX3.5EC
UW-MTX3.5H
UW-MTX4.5
0
7
8
B
9
C
3
4
6
5
Selection for No. of Poles
3 Pole
4 Pole 100% N
4 Pole 50% N (in Fr-III only)
4 Pole 200% N (upto 2500A)
X
F
H
D
Version
Draw-out
Fixed
D
F
(2)
Selection for control voltage
For Manually Operated
240V AC ECD & CR & 240V AC SR
240V AC ECD & CR & 24V DC SR
0
1
2
Manually Operated
Electrically Operated
1
2
Type
M
H
Special Applications
800V Operational Voltage
1000V Operational Voltage
ACB ordering information:
ACBs are offered with following standard features:
(4)
For Fr-1, 2500A selection, please contact the nearest branch office
(5)
Refer point ‘C’ of Draw-out Version Omega A CBs
(6)
For system requiring 690V metering, kindly order separate
Power Metering module with MT X 3.5
(7)
For Operational Voltage 800V (M-Medium) & 1000V (H-High) requirements
14th digit to be used. For standard Breaker (upto 690V) CAT No.
configuration remain as it is of 13 digit.
0
1
(3)
Temperature Rise Protection
Not Required
Required
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 ...
