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Students Click Here. Related Projects. Does anyone know how to calculate the ampacity of a rectangular copper bar. Please see the attached drawing for details. Please note that the cupper bar is going to be utilized as a terminal point for conductors up to volts. The terminations will have two hole lugs as as shown on the drawing.
Any suggestions to accomplish this task are highly appreciated. It's going to be around A, however it does depend upon your maximum temperature, and the ambient temperature. Also is it AC or DC? It will be an AC power source. Maybe you can explain how amps came about. Thank you. The old rule of thumb was Amps per square inch. Bill "Why not the best? Some city codes require A per sq. Quote: Your. Waross, you are correct in you assessment The 8" dimension is not to be taken into consideration.We have established a leading reputation for the design and delivery of high quality,cost effective switchboard.
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I want to clearly which product make cross sectional area. Please clear me. Calculated by dividing the weight in kilograms by the square of height in meters. Weight Calculator. No : 91 - Desk No : Mail. Amazing site, Distinguished criticism that I can handle. Im advancing and may apply to my present place of employment as a pet sitter, which is exceptionally agreeable, yet I have to extra grow.
Definitely it will be useful for many people. So please keep update like this. Great blog! I really like your blog. Your blog is very informative. Thanks for sharing such a useful blog. We provide you housing wire, industrial wirealuminium cable, cctv cable etc.
I want design a panel for ampere current on incomer so how should i decide my busbar size for aluminium as wess as copper? Generally we are using cable aluminium. Aluminium is available everywhere. Great post. Know the power of steel, These plates are manufactured by the vendors using superior grade mild steel so as to ensure their longer service life and high tensile strength.
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Wishing you all the best for the future. Le meridian funding service is best way to get an easy loan,here is there email. Pages Home. Sunday, 27 October Busbar size and calculation. A bus bar also spelled busbar, buss bar or busbaris a strip or bar of copper, brass or aluminum that conducts electricity within a switchboard, distribution board, substation, battery bank or other electrical apparatus.
Its main purpose is to conduct electricity, not to function as a structural member. Busbars are typically either flat strips or hollow tubes as these shapes allow heat to dissipate more efficiently due to their high surface area to cross-sectional area ratio. A hollow section has higher stiffness than a solid rod of equivalent current-carrying capacity, which allows a greater span between busbar supports in outdoor switch yards. A busbar may either be supported on insulators, or else insulation may completely surround it.
Busbars are protected from accidental contact either by a metal earthed enclosure or by elevation out of normal reach.
Power Neutral busbars may also be insulated. Earth safety grounding busbars are typically bare and bolted directly onto any metal chassis of their enclosure. Busbars may be enclosed in a metal housing, in the form of bus duct or busway, segregated-phase bus, or isolated-phase bus. Busbars may be connected to each other and to electrical apparatus by bolted, clamp, or welded connections. Often joints between high-current bus sections have matching surfaces that are silver-plated to reduce the contact resistance.Bus Bars are made up of copper or aluminium or iron or silver or galvanized iron etc.
For example, copper and aluminium used in electrical panel as conductor, iron bus bar used in traction conductor such as lifts, trolleys etc. Gold and Silver bus bar is used in high conductivity applications. The bus bar which carries alternating current such bus bar is called AC busbar and the Busbar which carries direct current such a bus bar is called DC bus bar.
But there is no difference at all. Many of the electrical engineer confuses about AC bus bar and DC busbar. In practically, Busbar means a conductor, which allows both Alternating current and Direct current that all. There is no difference or special manufacturing is required to carry alternating current and direct current. The copper has high conductivity and low resistivity. Copper is having high current carrying capacity.
I have worked in a panel manufacturing company for three years, the standard current carrying capacity of Copper busbar is 1. The total current carrying capacity of the busbar is 1. Hence the total current carrying capacity of the copper Amps of mm width and 10 mm thickness. The aluminium bus bar widely used and most popular than copper busbar.
Panel Design & Calculate Size of Bus bar
The aluminium bus bar is cheaper than copper busbar, but the resistivity of the aluminum busbar is high as compare with copper busbar. Also aluminum has the less current-carrying capacity as compared with copper. Take the same busbar of mm wide and 10 thick, the current carrying capacity of the aluminum busbar is Amps. We should take a multiple factors as 0. In very rare applications, the iron busbar used. Generally, these busbar used in trolleys, tractions, unloader etc.
Iron bus bar is cheap as compared with aluminum and copper. These bus bars will get corrode easily. These are not suitable for high moisture are. Consider the same bus bar. These galvanized bus bars are most popular in electrical earthing. You can see them in railway tracks. These bus bars are manufactured from iron and they will be galvanized.Hello all, I'm a new plating learner. The current size of copper busbar which link from rectifier to chrome tank is 12 mm x mm.
My question are: 1 What is the actual size of busbar I have to use in this case? This link should give you all the info you need. Thanks, Kurt. I think that page should be fine for AC current calculations. You need at least two, not one, 12 mm x mm busbars, although most experienced installers would probably use four or five 6 mm x mm bars instead. Aren't the connections coming out of the rectifier implying that four or five 6 x mm bars are suggested? Ted I have never claimed to be an electrical engineer, but have run a lot of wire in my day.
I never considered that there would be a difference in ampacity for AC vs DC. I reached out to the folks at Storm Copper for validation.
There response was: Yes. DC causes greater heating of the bus. A quick study of their ampacity tables complicates the issue even more. Fits your number perfectly. Maybe more heat transfer area to keep it cool. Thanks again, Kurt. I've been sizing DC bus bar the same way for 40 years, so I would dearly love to get out of that rut and hear a newer and better way. If these charts indicated higher ampacity than the simple old-fashioned method, I'd want to go along with them.
To the degree that they suggest that copper can only carry 70 to 87 percent of what we know for a fact that it has safely and reliably carried in tens of thousands of plating and anodizing installations over 5 or more decades, I think it is they who need to go back to the drawing board Their figures may be for bus bars enclosed in power distribution boxes or bus ducts rather than out in the open air.
Hi, just wondering whether anyone can help decide proper size of a conductor. This is specifically regarding hard chrome plating but can be applied to other types of plating as well. We use rectifiers that generally operate V and about A.
They are connected to the plating tanks with solid copper bars.August 5, 90 Comments. Filed under Uncategorized. About Jignesh. Parmar B. Tech Power System ControlB. E Electrical. Membership No:M He is Presently associate with one of the leading business group as a Deputy Manager at Ahmedabad,India. The above information is really useful for us who ever doing the design and selection of busbar for panel engineering. Thanks Sir, I need more elaboration on the temperature rise calculation.
I am not able to get the answer 30 in the given example. Deg cel with the given formula. Thank you for your information. I am doing Air core reactor designs myself. I know the temperature rise of the conductor. I am not getting Economical Designs…They are going very large size for smaller current and impedance… Will you pleas help to do learn reactor design…. I am doing this research my self from last one year.
Very use ful information you have given to us. Thank you. I have one doubt. Can you please tell me why we choose 2nos of 75X10 bus bar for each phase when one is enough for the Isc rating.
Is there anything else we have to know.If we can't tunnel through the Earth, how do we know what's at its center? All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. Hottest Questions. Previously Viewed. Unanswered Questions. Electrical Engineering. What is current carring capacity of copper bus bar of size 60 X 10 mm? Wiki User You need to indicate the cable size to determine the current carrying capacity.
To answer a current carrying capacity question the size of the wire has to be stated.
Quick Copper Busbar Design Selector
Asked in 50 Hertz Residential Electricity, 50 Hertz Industrial Electricity What is the current carrying capacity of 90 sq mm copper wire? Normally current carrying capacity tends to the maximum current withstanding capacity for the particular cable which is considered under to be designed. It depends on how you are laying the cable i. It should be noted that the selected cable overall outer diameter is in standard size which is standardized by the Cable Corporation of India Ltd.
For the 90 sq. It is within the standards of 70 sq. For the 95 sq. It is for multicore Amps for the copper wire. Asked in Human and Animal Interaction What is the S curve when comparing biotic potenial and carring capacity? The S curve represents the result of environmental resistance.
The research compares the population size to the time in which it took for environment to be effected. Asked in Science, Electrical Engineering What happens to a wire if the current capacity is exceeded? The wire overheats. In a bad case, a fire can be started. Note that, sometimes, current capacity is actually more a factor of insulation capacity rather than wire size.
Asked in Home Electricity What is the maximum current which can be withstand by copper wire? It depends on the size of the conductor wire. The thicker the wire the higher current it can take. First you need to find out the maximum current, for which you need to know the voltage.
Once you know the maximum current, cable manufacturer provides a data sheet in which you can find out the current carrying capacity of different size of cables. You can then choose right size of cable for current equivalent to 50 HP.One of the top glass design work held in art gallery expo. Our Boom Lift Rental Equipment access to product art in height work.
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