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Signage Civil & MEP

Al Inshrah is also well known in the industry, as the leading manufacturer and supplier of all kinds of Signs, Underground Warning tapes, Engraving, Acrylic Fabrication etc.

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Switchgear Components

We manufacture and supply various high quality switchgear components which is the skeleton of modern electrical distribution systems.

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Signage Material Trading

We deliver wide range of sign materials both for indoor / outdoor. PVC/Traffolyte/Acrylic Sheets/Engraving Cutter, Colour vinyl rolls, Indoor/Outdoor Digital Print , Cold Laminaton and much more...

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Busbar Trading

Al Inshrah, is known in the industry as one of the leading stockiest of Copper Busbarin the middle east, which is being manufactured by two leading manufacturers in the world, M/s. Oriental copper, Thailand and M/s. Luvata, Malaysia. Our clients can avail from us copper busbars, bare or tin plated, which are used for various electrical applications. These busbars are free from oxygen and are known for their size accuracy and electrical conductivity. These are available in various standard and customized options. Copper Bars are demanded for their superior conductivity and for properties like crack resistance and free bend-ability. Here, we also ensure that the end solutions offered assist in improving the thermal characteristics of copper flat bars. Some of the benefits provided by these bars include superior conductivity for better carrying capacity, superior dimensional control, crack - free bends, lower inductance, lower impedance, improved thermal characteristics.

Busbar

Bus Bar Bus Bar Bus Bar
Busbar

Busbar is considered as one of the most vital electrical element in electrical power generating stations and substations. Now a days the probability of fault occurrence has been reduced with the introduction of new age technology and advanced protection layout. Bus bar and high voltage power lines always needs special attention as they are most vulnerable to faults. Automatic Busbarprotection method is applied to avoid any damage or disruption of supply. In general, busbar forms a link between the incoming and outgoing circuits in electrical network. In very simple words, a busbar is a thick metallic (preferably copper or aluminum) strip or hollow pipe which concentrate the electrical power, and through which several outgoing lines are taken out or else several incoming lines are added, is termed as electrical busbar.

Functioning of copper busbars:

In electrical power distribution, the main purpose a busbar is to conduct electricity. It’ is also an electrical conductor, maintained at a specific voltage and capable of carrying a high current, usually used to make a common connection between several circuits in a system. "Busbar systems" refers to conductors that take the form of a bar or bars of copper conductor. The bars may be exposed or enclosed. The system may have one or more joints to assure proper length and configuration and one or more take-off points connected to end-use equipment.

Bus bars & profiles are extensively used in low voltage distribution, high current & control equipment. The applications of bus bars & profiles include low and medium voltage switchgear, bus-way systems, panel boards, switchboards and many others. It acts as the main pathway to feed and distribute the current flow.

Bus bars that are made from copper are preferred over those made from aluminum because of higher electrical conductivity that copper bus bars offer. It is due to the greater electrical conductivity of copper, which enable installers to use more compact copper bus bars.

Moreover, when it comes to the higher current requirements, copper bus bars are preferred. Connections made with copper bus bars have a much lower contact resistance which prevents overheating and burn-outs.

Key Benefits

  • There are numerous benefits that bus bars & profiles provide in various applications. Few of the major ones are:
  • Reduces System Cost
  • Improves Reliability
  • Increases Capacities
  • Low Contact Resistance
  • Eliminates Wiring Errors
  • Provides Lower Inductance
  • Provides Lower Impedance
  • Provides Denser Packaging
  • Provides Wide Variety of Interconnection Methods
  • Improves Thermal Characteristics

PHYSICAL PROPERTIES

ENGLISH UNITS
METRIC UNITS
Density at 20OC
0.321 1b/in3
8,94g/cm3
Melting point
1981OF
1,083OC
Coefficient of thermal expansion at :
25 to 100 OC/77 to 212 OF
20 to 300 OC/68 to 572 OF
0,000 009 33 per OF
0,000 009 83 per OF
0,000 016 8 per OC
0,000 017 7 per OC
Thermal conductivity at :
20 OC /68OF
227 Btu ft/ft2h OF
395 W/Kw
0,94 cal, cm/cm2s OC
Electrical conductivity at:
20 OC /68OF soft annealed
20 OC /68OF fully cold worked
100,0-101,5% IACS
97,0-97,7% IACS
58,00-58,9 m/ohm mm2
58,3-56,6 m/ohm mm2
Electrical resistivity at :
20 OC /68OF soft annealed
20 OC /68OFfully cold worked
110,371-10,2 ohms
0,678 8-0,669 microhm in 10,3 ohms
0,700 microhm in
Max 17,241 nΩm
17,86-17, 65 nΩm
Temperature Coefficient of electrical resistance at:
20 OC /68OF soft annealed
20 OC /68OF fully cold worked
0,002 18 per OF
(100% IACS)
0,002 12 per OF
(97% IACS)
0,003 93 per OC
(100% IACS)
0,003 81 per OC
(97% IACS)
Modulus of elasticity (tension) at :
20 OC /68OF annealed
17,000 KSi
118kN/mm2
Modulus of rigidity at :
20 OC /68OF annealed
6,400 KSi
44kN/mm2
MATERIAL : OF-OK™
OK-type
USA
UNS (CDA)-number
UK
BS
Germany
DIN
OF-OK™
C 10200 OF
ASTM
B170-82- grade 2
6071
1981
Cu-OF
1787
OF-Cu

There are four major types of bus-bar which are classified based on the nature of the bus and voltage level they are used for. These are:

Rigid busbar – This is used for low, medium as well as high voltage. This bus-bar is rigid in nature and is made up of aluminium or copper. Porcelain insulator supports this kind of bus-bar.

Strain busbar – This is flexible in nature and supported by suspension type insulator. This type of bus-bar is used for high voltage level.

Insulated phase busbar – This bus-bar is used for medium voltage and it is rigid in nature. Insulated phase bus-bar is covered by metal shield which is grounded.

SF6 insulated busbar – Medium and high voltage system uses this kind of bus-bar system. This is aluminium bus-bar which is rigid and supported by insulators. There is metal tube which contains high pressure sulfur hexafluoride gas in which this bus-bar is installed. According to shape bus-bars are of a few types. These are – tubular tube, round hollow tubes, round solid tubes, square tubes, flat bus-bar.