How is aluminium busbar size calculated?
THUMB Rule for Busbar : For Aluminium : 0.7 Amps / 1 Sq.mm of Bar. For Copper : 1.2 Amps / 1 Sq.mm of Copper. i.e They used 0.75 Amps / 1 Sq.mm of Bar & 1.4 Amps / 1 Sq.mm for Aluminium & Copper Respectively.
How is aluminium busbar weight calculated?
To find out the total weight per unit of your aluminium extrusion simply multiply the kg/m by the length of the finished product.
How many amps is a busbar?
Our common bus bars are rated for 150 amps of continuous power. They are called common as they are the industry standard size and as such, are the most common. Maxi bus bars are for use in applications that require 250 amps of continuous power.
What is the current density of Aluminium?
Aluminum has a density of 2.7 grams per cubic centimeter no matter how much of it you have.
How do I choose a bus bar?
Factors of selecting busbars:
- Position of the bars (Horizontal or Vertical)
- The current that busbar shall curry in normal operation.
- The rated short circuit withstand current that busbar shall withstand in fault condition.
- The rated peak withstand current that busbars shall withstand in case of lightning.
How do you calculate the weight of Aluminium strips?
How to Calculate Aluminium Sheet Weight
- Weight = Length x Width x Thickness x Density, or.
- Weight = Length x Width x Weight/m2 (or in2, ft2)
How do you calculate busbar kg?
Weight per Meter = (A x A x 0.007361) Kg in Brass Kg.
What is the ampacity of an aluminum bus bar 1/4 thick and 2 wide?
This can be in the form of a 1/4” x 4” bus bar. A 1/2” x 4” bus bar would be 2500 amperes. A one-inch square aluminum bus bar has an ampacity of approximately 1000 amperes. A 1/2“ x 4” aluminum bus bar would be approximatley 2000 amperes.
How is earthing size calculated?
Let we calculate the required GI earth conductor size for 20kA Fault Current at 0.5 sec. Approximately 185Sqmm. Generally, GI is availed in the busbar structure hence Or You can take any combination of conductor size such as 50×3.5 Sqmm or 25x8Sqmm etc….Earthing conductor size calculation Formula:
| Material | Material Constant (k) |
|---|---|
| Copper | 205 |
| Aluminium | 126 |
How do you calculate bus bar size?
Desire Current Rating of Bus bar (I2) =630 Amp
How to calculate the busbar size?
(1) De rating Factors for Bus bar: Bus bar Width (e) is 75mm and Bus bar Length per Phase (a) is 500mm so e/a is 75/500=0.15 No of Bus bar
How to calculate busbar rating?
To calculate the rating of a busbar, enter in the width and thickness of the bar, and the ambient temperature around the bar. Select the units as either metric or imperial, and the temperature as Celsius or Fahrenheit. The program displays both the current rating of an aluminium bar of these dimensions and a copper bar of these dimensions.
How should a busbar be rated?
Rated current- the RMS value of current which the bus-bars can carry continuously with temperature rise within a specified limit