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.
There are three types of busbars and busways:
Indoor busways, which have extruded housings and standard joint covers.
Outdoor busways, which incorporate fully sealed joints and housings for weatherproof requirements.
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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
Pre-engineered and designed busbars from the busbar manufacturers allow for a more precise design of the system ie. modular busbar systems.
In Saudi Arabia we saw Alfanar company doing this type of termination and distribution.
Currently Oriental Copper Co. is more innovative in its approach and design of busbar.
Applications and UseTop
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.
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.
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).
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.
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.
Durable and appropriate for harsh environments. Prevent ingress of insects.
Should avoid loose joints in busbars; cleaning of bus insulators to avoid tracing and failure of busbars resulting in shutdown of plant facilities.
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.
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.
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.
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.