Description   Busways and busbars (conductor bars) provide current to distant or moving points along the path of an electrification system. Busbars and busways provide stationary alternatives to reels, festoons, or other retracting or moving electrification supplies.   Types   There are three types of busbars and busways:   Indoor busways, which have extruded housings and standard joint covers. Outdoor busways, which incorporate fully...
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Q & A on Busbars and Busways

We asked our users for their input on Busbars and Busways. Here are the results of 217 users familiar with Busbars and Busways.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing busbar or busway design?
30 answers
Answers:
The shape of the busbars and the thickness of the busbar used. Usually flat bars are used but there is a new technology developed where channel type bars are used which improves the conductivity for the same nominal current
~Shrimant S, Marketing/Sales, Bangalore, India

Pre-engineered and designed busbars from the busbar manufacturers allow for a more precise design of the system ie. modular busbar systems.

~Edwin P, General Manager
Additions of polyester type material as insulation between conductor bars to allow small gaps between phases for lower impedance values.
~David C, General Management, Camberley, UK
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Q:
From your perspective, which companies are creating the most innovative busbars or busways?
27 answers
Answers:
EAE Electric AS Turkey, Magnabar from Maylasia (IP68 cast resin) and there are new products planned by Zucchini (Italy but owned by Legrand - France).
~David C, General Management, Camberley, UK

In Saudi Arabia we saw Alfanar company doing this type of termination and distribution.

~Abdul salam A, sales manager electrical department, dammam, saudi Arabia

Currently Oriental Copper Co. is more innovative in its approach and design of busbar.

~Edwin P, General Manager
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Applications and UseTop

Q:
What are some of the applications you have used busbars or busways for?
55 answers
Answers:
Lighting busbar >40A in retail malls, shopping centres and large distribution centres for logistics/warehousing. Rising Mains systems >800A/1600A for hotels, office buildings, hospitals as distribution supplies for factories and workshops. As prime supply from transformers, generators to LV boards on Data centres at 1600 - 6300A loads.
~David C, General Management, Camberley, UK

The selection of busbars is done for LV Panels, MV panels.  The selection of Busways is done when the 1) Current is comparatively high 2) where the usage of cables is not feasible, since for higher currents, lot of parallel cables are required for each phase and bending of cables may be difficult in panels. 3) usually done between the transformer/ Generator to the first Main LV panel.

~Shrimant S, Marketing/Sales, Bangalore, India

Operation, maintenance, renovation/ upgrading of existing Busbar systems to accommodate additional outgoing feeders to reduce cost of projects (instead of procurement of new panels) for capacity expansion scheme.

~Manindra Nath Datta D, Head of Electrical Engineering wing of Haldia Dock Complex, Kolkata Port Trust., Haldia, India
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Q:
Please share with us any “non-standard” applications that busbars or busways have been used for.
16 answers
Answers:

This technology can be used in emergency lights with LED. With this, the light will function even if one or two LEDs go off and also can have the option of selection of lighting with slide switches. (This is only for low voltage and not for KV range).

~Dorai R, Engineering Consultant, Hyderabad, India

Working in Pakistan... most of the time, we face very poor standards of distributing the connections from main breaker... like when there will be more than one load attached on one main circuit breaker.... there we need busbars to distribute the load cables properly to decrease the line losses.

~zubair M, Engineer, lahore, pakistan

Recently I had seen Oriental Copper offer their users a new technology wherein busbars bent 180 degrees by twisting and turning thereby allowing for phase sequence to be maintained without any additional phase transfer busbars.

~Edwin P, General Manager
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Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of busbars or busways?
22 answers
Answers:
Due to improper maintenance and upkeep there was huge flash over in bus system and in effect entire plant was shut down for one day as there was no full standby system to feed power requirement of plant.
~Manindra Nath Datta D, Head of Electrical Engineering wing of Haldia Dock Complex, Kolkata Port Trust., Haldia, India
Impedance decoupling from standing waves caused current surge, blowing out one phase of a supply.
~Greg B, Research & Development, Oklahoma City, OK
There is nothing more exciting than an arcing ground or phase to phase fault! Make sure adequate spacing or insulation is maintained between adjacent busbars and or ground!
~Engineering, Other, Williamsburg, VA
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FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
30 answers
Answers:
For medium voltage isophase and nonsegregated buses people should use common HV sense. No air gaps in insulation, no gaps between HV conductor and support insulators, use dry air to get rid of water and ozone.
~Igor B, Lead Project Engineer, Minnetonka, MN
I would like to see Bus Bars and Bus ways to replace cables in high rise buildings as feeders to clients for power intake. This will make the installation more safe and neat.
~Nagendra Mathur M, Engineering Consultant, Kolkata, India

Durable and appropriate for harsh environments.  Prevent ingress of insects.

~See Fong H, Engineer, Singapore, Singapore
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Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of a busbar or busway?
18 answers
Answers:

Should avoid loose joints in busbars; cleaning of bus insulators to avoid tracing and failure of busbars resulting in shutdown of plant facilities.

~Manindra Nath Datta D, Head of Electrical Engineering wing of Haldia Dock Complex, Kolkata Port Trust., Haldia, India

If you have a non-standard application be prepared to design it yourself. Learn appropriate codes and conduct FMEA prior to settling on a design. Understand system impedance and compensate for resonance issues.

~Greg B, Research & Development, Oklahoma City, OK

Use bus bars at only 60 percent of the bus bars designed load.  You can also improve the connection quality at a very long time to coat chromium oxide on the copper bus bars ... it can save the bus bars from corrosive and dusty environments.

~zubair M, Engineer, lahore, pakistan
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Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using busbars or busways?
19 answers
Answers:
1. Metal is costly and high inventory item. So selection of right sizes and quantity is important. 2. All Manufacturers offer quality products, but the purity differs. Check with your design team about the purity requirement and buy a right product at competitive prices. 3. Buy / stock only fast moving items and allow very little for slow moving stock. 4. Keep a tab on your inventory and Book metal when the prices at the world market is low.
~Edwin P, General Manager

My advice is NOT to use the Conventional Sandwich Design Busways, as their insulation thickness is very little (less than 0.5 mm and as the airgaps at joints and all along the length of the busway cannot be avoided, as the contact area, contact force and uniformity of contact pressure are highly inferior and as these cannot withstand the Fire- Resistance in Building Penetration Test in Vertical Position, as per IEC 60439- 1&2.

~Balakrishnan Nair K, General Manager, Sharjah, United Arab Emirates

Some Suggestions A: Bus bars are a long term investment, please do it with careful selection.  B: Cheap Bus bars shall take you to danger.  C: Bus bars are cheaper than cables in utilization.  D: Give first preference to Copper Bus bars than Aluminum.

~Vilas P, General Management, Ras Al Khaima, UAE
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