Useful Hints
8-3
Frame-3 : 400 - 4000A N08/H/V & 5000-6300A H/V
*Not as per standard but generally followed
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 Aluminium 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
8000*
Copper termination recommended
Aluminium cross
section as per
IS/IEC (in sq. mm)
3
6300
10000*
-
150 - 5 runs
125 - 6 runs
125 - 5 runs
4000
7200*
150 - 4 runs
-
Copper termination recommended
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
1
6 mm
-
-
75 - 2 runs
60 - 3 runs
Flat
10 mm
60 - 1 run
60 - 1 run
-
-
12 mm
-
-
-
-
-
-
6 mm
75 - 2 runs
-
-
50 -1 run
60 - 1 run
50 -1 run
60 - 1 run
10 mm
60 - 1 run
-
-
75 - 2 runs
-
-
-
12 mm
-
-
-
-
6 mm
75 - 2 runs
60 - 3 runs
-
10 mm
-
-
75 - 2 runs
12 mm
-
-
-
-
-
Rating
(A)
800
1000
1250
1600
2000
500
600
800
1000
1500
Copper cross
section as per IEC
(in sq. mm)
60 - 3 runs
60 - 1 run
Direct Copper termination or
Aluminium terminations with Copper jumpers
Frame-1 : 400 - 1600A N/N08/D10/S/H & 2000A N/N08/D10/S/H
Содержание U-POWER Omega UW-MTX 1.5G
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Страница 12: ...Microswitch...
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Страница 30: ...3 12 X X 100 150 mm X 100 150 mm X X 15 max...
Страница 45: ...3 27 Termination Draw out Breakers THIS PAGE IS INTENTIONALLY LEFT BLANK...
Страница 46: ...Termination Draw out Breakers 3 28 THIS PAGE IS INTENTIONALLY LEFT BLANK...
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Страница 83: ...4 1 4 1 Cradle Mounted Accessories...
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Страница 90: ...4 8 4 2 Breaker Mounted Accessories...
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Страница 97: ...Section 5 Protection Control units 5 1 Identification 5 2 Protection Characteristics...
Страница 104: ...5 7 Protection Characteristics Overload I T for UW MTX1 0 2 0 1 1 10 100 1000 10000 10s...
Страница 114: ...Protection Characteristics 5 17 2 Earth Fault I T ON for UW MTX 2 5G 3 5 3 5EC 3 5H 0 4 2 4 0 1...
Страница 118: ...6 2 6 2 Checking ON OFF Operation DISCHARGED O CHARGED O I DISCHARGED Now the Breaker is and Spring is DISCHARGED O...
Страница 119: ...6 3 6 3 Testing Control circuit Interlocks if breaker is equipped with accessories...
Страница 129: ...Section 7 Maintenance Operations 7 1 Maintenance schedule Operations 7 2 Accessories and Spares...
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Страница 136: ...7 7...
Страница 142: ...Section 8 Useful Hints...