Episode 2 - What is a ACB, Air Circuit Breaker, Trip Units, draw-out explained by a M&E engineer!

This this video you will learn about:-
Introduction
Withdrawable / Fixed ACB?
Frame Sizes
Trip Units
How do you operate an ACB?
The Accessories
How do we select an ACB?
Conclusions
If you havent seen the first episode on Basics on MCCB and Circuit breakers we highly recommend you check it out before watching this!
• Episode 1 - What is a ...
If you like this video, please Like and Subscribe!
More videos like this coming up!
About the creator,
Weet is a seasoned M&E engineer who has worked with major engineering MNCs. He is a electrical engineer by discipline.
Music: www.bensound.com" or "Royalty Free Music from Bensound
Artwork: Credits to OEMs. Do contact to remove any licensed images.
#ACB #Electrical #Engineering #AirCircuitBreaker #CircuitBreaker #circuit breaker #English

[@eheh7829]

Outstanding job

[@graham5649]

Great video, really helpful, thanks

[@sheriffdeen175]

It is really helpful thanks

[@alsiyabi9590]

good video, thanks for the effort

[@andyding673]

Thank you,very useful

[@BariawAbera]

It is really helpful

[@Kannan_RL]

Very informative videos

[@bobbyearayil]

Excellent

[@MuhammadIrfan-gs2eb]

Very nice thank you

[@ansharafi5398]

good work,
need much deep inormation

[@barunakumarpradhan4644]

Very useful video

[@edwinferguson8337]

Great job.

[@themeengineers1671]

Thank you! I will be back with more videos soon!

[@ahmedfarid737]

Very good
I appreciate your efforts

[@themeengineers1671]

Thank you so much farid

[@Laurock93]

Nice video, thanks for the info!

[@themeengineers1671]

Gracias

[@abdessamedghettas7167]

Thanks

[@katuraysalad]

Thank you for this video

[@themeengineers1671]

Pleasure

[@sheriffdeen175]

Thanks sir

[@themeengineers1671]

feel free to drop any questions here and I will answer them!

[@thurazawwisewish1843]

Great

[@techcat7318]

Whoa just discovered your.Very informative 👍🏻👍🏻

[@themeengineers1671]

Cheers

[@ELECTRICIANSatWORK]

Thank you so much

[@themeengineers1671]

Cheers

[@ashutoshmahajan823]

Need Videos on Contactors and Its accessories

[@naakiemeshach7873]

Thank you for the class, but I would like to watch episode 1.

[@themeengineers1671]

You may see all videos for free at my channel.

[@jerrytan3588]

What is the useful life for the ACB? In terms of maintenance, in what interval ACB shall be maintained (monthly? Half yearly? yearly?) and what are the scopes involved?

[@themeengineers1671]

Hi Jerry thank you for your comment. ACB's useful life tags with the Switchboard of 20 years if it is well maintained.
In terms of maintenance, a yearly Basic end-user maintenance program and
Standard end-user maintenance program every 2 years is required.
As for OEM maintenance, depending on the current loading, criticality and environment it is recommended to have maintenance every 2years for bad conditions, and 5 years for better conditions.
Hope that answers your questions!

[@jerrytan3588]

@@themeengineers1671 Thanks for the response. Clear!

[@gharamkhallouf7591]

​@@themeengineers1671 we need more video why stoped.😢

[@MarkKalani]

Does the Trip Unit have input from Current Transformer?

[@TRQ24]

Good....

[@themeengineers1671]

Cheers

[@steveokinevo]

Good video friend I have question I watched engineers test acb mechanisms on regular basis, they would shut off acb and then rack it out not fully??? Then rack back in, pump and energize again. Why did they rack it out????

[@themeengineers1671]

Hi steve, the pumping action is to charge the coil, after the coil is charged the acb is ready to close the circuit again.
The reason we rack it out not fully i assume is to move the breaker to a test mode/ maintainence mode, where main contacts are isolated(open) and control circuits remain connected. In this position we will be able to still test the function of the breaker without closing the circuit at all(we dont want to open and close the circuit so many times during test as it cause disruptions to the loads). Therefore racking to test position ensures one time power off and give you ability to test various features of the breaker many times before racking in again for operation.
Hope this explains

[@steveokinevo]

@@themeengineers1671 you sir are a legend thanks so much for the response that clears it up nicely, I always wondered why now I know. Hope to see more videos from you soon, its excellent content.

[@jeorgenalugon5208]

kindly discuss about Frame Sizes of ACB.

[@themeengineers1671]

Hi they are usually described as AF, amp frame, it comes in 800, 1250, 1600, 2000,2500, 3200,4000,5000,6300.

[@thurazawwisewish1843]

Ok

[@user-ts3yj9fn5d]

What words does AMPS stand for?

[@jongabrielmgster8648]

If the the trip unite gets tripped, does the current stop flowing thourh the entier acb and is it onlt the trip unit that can break the current if there is somthing wrong?

[@themeengineers1671]

The entire acb is opened once the trip unit detects a fault. A good trip unit shows the fault type for the engineer to rectify. Once fault is rectified the acb can be reset and re closed. Hope i answered your question

[@niyongiraemmanuel1496]

Hello. I have sace emax. But the display is not starting on. Once Db is powered. What could be the cause ?? What should I do?

[@themeengineers1671]

Hi, do ensure that the dc supply is in. Or acb itself is powered on. Otherwise it might be a faulty trip unit.

[@thurazawwisewish1843]

Thanks

[@thurazawwisewish1843]

Thanks