Amazing. I wasn't aware that there are multiple contact surfaces in one of these breakers. The arcing contact is sacrificial and the other contacts carry the bulk of the load. Ingenious!
Thank you for making sure our aging electrical grid is up to the task. Keeping the lights on. May the safe rules never be broken. Safety is essential for everyone.
How wonderful it is that we live in a time where we can learn about such things so far from one's education or field of expertise. The internet truly is a wonderful thing!
An instructor told me: "if you learn one breaker you can work eM aLL!" The only thing that changes is the BoX they came in! He was right. They all com in a box!
The old minimum oil Sprecher and Schu. As far as I am concerned the best and most reliable HV and EHV breaker ever made. These things are 40 years old. Before SF6.
This is very interesting. I retired as a Master Electrician in 2003 and had worked on 13.8 kv or less for 32 years. In that Voltage range, at that time, molded case breakers typically had a rating of around a dozen trips before they were rebuilt. We used some motorized breakers for 13.8kv which were around 1 meter cube, all metal, and were made by GE, and I do not know how many trips they could withstand. I avoided these breakers as much as possible.
Kilani Sdudah Dear Mr. Kilan Sdudah, Thank you for your positive statement regarding our video. In your comment you ask about the price of a circuit breaker (switch) and its operational lifetime before maintenance. However, we, OMICRON, are a manufacturer of test equipment and have also a test system called CIBANO 500 with which you can test circuit breakers. We do not manufacture circuit breakers. Therefore, we don’t have price data or maintenance cycle data available. In order to get more information about OMICRON, please visit our website www.omicron.at. If you want to know more about CIBANO 500 please follow the link www.omicron.at/en/products/all/primary-testing-monitoring/cibano-500/ Please just let us know if you need more information. Best regards, Your OMICRON Team
Greetings from recommendation land! I stumbled upon this video as it appeared today. So... I decided to have a look, and wow! This is fascinating. Great video! Voiceover is clear, and everything is well-explained. I’m not in the electrical engineering field, however I understood most of the video!
Thank you l got some more information about CB test .one request kindly give the test results which varies by aging and is there any book on aging with test results? Kindly reply.
Dear deepak kumar parida, Thank you for your interest and for watching the video. Aging of circuit breakers has an influence on almost every test result. On further information about interpretation of CIBANO test results we suggest the paper "Interpreting the results of circuit breaker analysis", it contains test examples from new and aging circuit breakers. You can download the paper in the knowledge library after a quick login on our customer portal: my.omicronenergy.com/ Best Regards, your OMICRON team
Dear Subramaniam Chandrasekar, thank you for you interest in our videos! In high voltage switchgear, today mostly SF6 is used as interrupting medium. It has by far the best arc interruption capabilities for high voltages. In medium voltage, and nowadays even up to 145 kV, vacuum chambers are most common. The real challenge is not withstanding the 220 kV to ground, any insulator will do (often porcelain), the big challenge for circuit breakers is interrupting short circuit currents of magnitudes like 80 kA at high voltage. We hope this answer could clear some things up already. If you have any additional questions, please get in touch with us directly. You can find your local contact person here: www.omicronenergy.com/en/contact/addresses Best Regards, your OMICRON team
How do you measure contact resistance by grounding both incoming and outgoing terminals of the breaker?? Earth resistance will be in parallel in this condition and there will be some error. Correct me if I am wrong. Thank you
Dear Vikhyath, thanks a lot for your interest to our video and for your comment. Regarding your question: CIBANO 500 offers the new Current Sensor Measurement (CSM) method. This allows the operating times of the circuit breaker to be determined accurately even though the GIS is grounded on both sides. During a close or open operation of the circuit breaker, the current sensor measures the current change through the ground connection or the circuit breaker and sends its signals to CIBANO 500 which determines the switch response times: www.omicronenergy.com/en/news/details/new-method-for-timing-tests-on-gis-with-grounding-on-both-sides/ The same principle does also work in air-insulated substations (AIS) if both sides of the circuit breaker must remain grounded due to safety reasons. In such case the current is injected into the ground path while a flexible Rogowski coil is attached around one side of the grounded terminals. If you have any additional questions, feel free to contact our technical support team - they are happy to help you: www.omicronenergy.com/en/support/technical-support/ Best regards, your OMICRON team
Good stuff. Nice testing and measurement tools too, made specifically for a job and analysis of data. The principle is very simple, but the tooling and analysis is what makes it awesome.
Dear Dorothy Gale, The high potential test is not a default test within a standard test plan. This test is common for different areas (e.g. USA). In this areas high potential tests are an integral component of revision/maintenance measurements. The frequency of revisions/maintenances is related to the CB manufacturer as well as the substation operator. Best regards, Your OMICRON team
Dear kisakye tommy, Test intervals for circuit breakers can differ a lot depending on the type of breaker and usage. While a circuit breaker can operate thousands of times under normal conditions, it can only interrupt about 5-15 short-circuits. Therefore, a condition based maintenance interval is preferable. Generally speaking, circuit breakers will be tested about every 6-10 years on average. Best Regards your OMICRON team
How do they turn these one and off without causing a surge or spike? How do they deal with a power supply that has lost a third of a phase or when one of the 3 power supply circuits is lost?
Dear Phillip Mulligan, While the interrupter opens, the spark is controlled by the extinguishing medium (compressed air, oil, vacuum or SF6). The protection relay of the power grid trips and the whole 3 phase system is out of operation or a backup line is used to ensure a smooth power transmission. Best regards, Your OMICRON team
Thanks for the info. I didn't expect it to be this simple. I always thought the power grid as a very complex system that was pretty fragile. Epcor up here in Alberta goes to extreme measures to insure such an event is very rare.
3:22 Why should they be grouded for safety conditions? Also, in this context, does "ground" mean to connect it to the soil or planet Earth, or does it mean something else?
Dear Alejandro Nava, Thanks for watching this video and for your interest. The grounding is there to have no potential from e.g. induced voltages. In this context the ground refers to the ground potential. Usually there is a grounding point somewhere below the breaker where you connect these grounding rods seen in the video. If you want to find out more about this subject and our products, check out our LinkedIn channel www.linkedin.com/company/omicron-electronics or get in touch with us directly. Please find your local contact person here: www.omicronenergy.com/addresses. Best regards, your OMICRON team
Dear Vincentius Raki Mahindhara, For older (oil-isolated) CBs, power factor tests can be performed, but are not really common. Newer generations of CBs are isolated with SF6 or vacuum. For these CBs it is more common to either test the SF6 with a SF6 analyzer or check if a vacuum is present. With an SF6 analyzer the gas is tested for dew/frost point, ppmv and ppmw as well as the SF6 purity (% Vol. SF6). Best regards, Your OMICRON team
Hi Jorge, What you see is a North America Substation with so called “Dead Tank” circuit breakers. Typical for such breakers is that they have current transformers mounted on each pole.
Many companies underestimate these tests. Usualy, this tests are expensives, because you need especificaly equipiments and workers who are trained to operate and get the best and correctly results. But, one failure on one circuit breaker may cause big loses to companies.
Dear araki916, DGA is not only restricted to power transformers, it is also done on On-Load Tap Changers, Bulk-Oil Circuit Breakers, Oil-Immersed Reactors and so on. Nevertheless, for this type of Circuit Breakers (Minimum Oil Circuit Breakers) DGA is not required, since the oil is utilized as interrupting media and not as an insulation media. Instead of DGA, another measurements are conducted like Oil Dielectric Breakdown and Interfacial Tension among others. Best regards, Your OMICRON team
Dear Praneeth Krishna, that is our Primary Test Manager (PTM). This software is used for controlling a lot of our test devices and can be used as a database for all the tests performed. Find out more: www.omicronenergy.com/en/products/primary-test-manager-ptm/ Best regards, Your OMICRON team
Dear aldrin p a, The power factor (or dissipation factor) is among others used to determine the condition of an insulation material. As mentioned in this video, also the circuit breaker bushings have to be tested. One parameter of testing the bushings is the power factor. Best regards, Your OMICRON team
A reassuring set of test done here, although, all that exposed mechanics which I would think would lock up in the winter with ice. The internal mechanicals will slow up too, the grease will become hard. These tests need to be done under worst case scenario too.
Yep. A critical part of that miracle known as the electrical supply grid most people take for granted and are profoundly ignorant concerning the functioning of. The underpinnings of our modern society rather than social engineering should be taught in our schools.
Dear amir tv, thanks for your interest! Unfortunately we cannot share this music as it is our own composition that must not be reused without our consent. If you have any questions regarding our products and services, please feel free to get in touch with your local contact person: www.omicronenergy.com/en/contact/addresses Best regards, Your OMICRON team
Thank u for watching us a very usefull vedio,because it may help in my professional life.I am a worker of bangladesh rural electrification board.This kind of vedio also encourage us for sefty.
Dear Gj23jk2, We appreciate your open feedback. We totally agree with you that paying 3rd party companies for commenting and sharing of videos is an unethical business behaviour. Therefore we have never paid any 3rd party companies for commenting or any other social interactions on our videos. This wouldn’t fit to the values, business ethics and code of conduct of our company. Best regards, Your OMICRON team
Thank you for your professional and respectful reply. In acknowledgement of your frank response, I will delete my original remarks. Suspicion and rudeness should not supersede politeness, even in this crude day and age. I apologize if I created offense. Good day.
Amazing. I wasn't aware that there are multiple contact surfaces in one of these breakers. The arcing contact is sacrificial and the other contacts carry the bulk of the load. Ingenious!
Thanks im gonna go test the breakers on my street now
Thank you for making sure our aging electrical grid is up to the task. Keeping the lights on.
May the safe rules never be broken. Safety is essential for everyone.
I don't know why this was in my recommendations but it was interesting
Same
SovietRusalka exact same
same bro
@SovietRusalka
Google determined you should become a lineman. They're going to keep gaslighting you until you comply.
😉
Same here
My electrical know-how pretty much stops at dealing with household 120v and 240v wiring, but this was ridiculously informative anyway!
How wonderful it is that we live in a time where we can learn about such things so far from one's education or field of expertise. The internet truly is a wonderful thing!
THIS is how to make a quality video. Great Job!
An instructor told me: "if you learn one breaker you can work eM aLL!" The only thing that changes is the BoX they came in! He was right. They all com in a box!
The sound of those breakers tripping is one of my favorites.
The old minimum oil Sprecher and Schu. As far as I am concerned the best and most reliable HV and EHV breaker ever made. These things are 40 years old. Before SF6.
Woo. That was one mighty satisfying video to watch. Informative, direct, and concise.
This is very interesting. I retired as a Master Electrician in 2003 and had worked on 13.8 kv or less for 32 years. In that Voltage range, at that time, molded case breakers typically had a rating of around a dozen trips before they were rebuilt. We used some motorized breakers for 13.8kv which were around 1 meter cube, all metal, and were made by GE, and I do not know how many trips they could withstand. I avoided these breakers as much as possible.
Khadijah Brown yep testing GE is petty and cruel.
that's more clear than they teach us in university.
that's because it's theoretical teaching at the university. not practical. but you need the theory before practical learning.
@@AntimatePcCustomI think it should be the other way around.
Fantastic video and helped practically realize theories learn in books. Keep bring more.
Excellent video! This was extremely thorough and still easy to follow.
Well done! Much better than most vids on the Tube.
This is so bad ass! For all the thankless work electrical workers do... Thank You!
Gained 5 IQ just by watching this vid.
And still some idiots have disliked this video
@Nicholas Parris Like that kilobyte dude
@Kilo Byte
almost ...
Nope. You may be a but smarter but that isn’t the same as intelligence.
Amazing level of engineering. I totally wasted 30k on a business degree. These guys are the smart ones.
Good video ...and how much money for this switch .? And the operational life time before maintenance. .
Kilani Sdudah
Dear Mr. Kilan Sdudah,
Thank you for your positive statement regarding our video. In your comment you ask about the price of a circuit breaker (switch) and its operational lifetime before maintenance. However, we, OMICRON, are a manufacturer of test equipment and have also a test system called CIBANO 500 with which you can test circuit breakers. We do not manufacture circuit breakers. Therefore, we don’t have price data or maintenance cycle data available. In order to get more information about OMICRON, please visit our website www.omicron.at. If you want to know more about CIBANO 500 please follow the link www.omicron.at/en/products/all/primary-testing-monitoring/cibano-500/
Please just let us know if you need more information.
Best regards,
Your OMICRON Team
Greetings from recommendation land! I stumbled upon this video as it appeared today. So... I decided to have a look, and wow! This is fascinating. Great video! Voiceover is clear, and everything is well-explained. I’m not in the electrical engineering field, however I understood most of the video!
Omicron doing some fine work 👍
Please keep teaching about electrical transmission and distribution.
Gotta love those shiny ceramic insulators with their blinging plates!
I don't know how I got here, but I enjoyed it thoroughly.
Now I wish I would have studied electric engineering instead of textile engineering
Hey man, it's never too late to change careers...
As a 56 y/o Psychiatrist I was just having the same thought!
I stayed a while to listen, but you didn't elaborate...
Never too late to change!
I m stdying EEE
It looks the video was made in the switching station Bürs/Vorarlberg.
Dear MusicVidsAT,
you are right, the video was indeed done in Bürs. Very well spotted!
Best regards,
Your OMICRON-Team
@@omicronenergy who actually recognizes this place?!?
Thank you l got some more information about CB test .one request kindly give the test results which varies by aging and is there any book on aging with test results? Kindly reply.
Dear deepak kumar parida,
Thank you for your interest and for watching the video.
Aging of circuit breakers has an influence on almost every test result. On further information about interpretation of CIBANO test results we suggest the paper "Interpreting the results of circuit breaker analysis", it contains test examples from new and aging circuit breakers. You can download the paper in the knowledge library after a quick login on our customer portal: my.omicronenergy.com/
Best Regards,
your OMICRON team
This is my favourite video on youtube
What type of insulator material is used to open / close the contact plug and sockets that will withstand say 220 KV and ground?
Dear Subramaniam Chandrasekar,
thank you for you interest in our videos!
In high voltage switchgear, today mostly SF6 is used as interrupting medium. It has by far the best arc interruption capabilities for high voltages. In medium voltage, and nowadays even up to 145 kV, vacuum chambers are most common. The real challenge is not withstanding the 220 kV to ground, any insulator will do (often porcelain), the big challenge for circuit breakers is interrupting short circuit currents of magnitudes like 80 kA at high voltage.
We hope this answer could clear some things up already. If you have any additional questions, please get in touch with us directly. You can find your local contact person here: www.omicronenergy.com/en/contact/addresses
Best Regards,
your OMICRON team
very thorough and high quality
Great video. Proud to be an Electrical Engineer....
I'm talking from Bangladesh (South asian country), It's very important for me, because i'm an engineer (eee).
Thanks a lot...!!!
Take care....
Thanks UA-cam. I learned something new today. The more you know!
How do you measure contact resistance by grounding both incoming and outgoing terminals of the breaker?? Earth resistance will be in parallel in this condition and there will be some error.
Correct me if I am wrong. Thank you
Dear Vikhyath,
thanks a lot for your interest to our video and for your comment. Regarding your question: CIBANO 500 offers the new Current Sensor Measurement (CSM) method. This allows the operating times of the circuit breaker to be determined accurately even though the GIS is grounded on both sides. During a close or open operation of the circuit breaker, the current sensor measures the current change through the ground connection or the circuit breaker and sends its signals to CIBANO 500 which determines the switch response times: www.omicronenergy.com/en/news/details/new-method-for-timing-tests-on-gis-with-grounding-on-both-sides/
The same principle does also work in air-insulated substations (AIS) if both sides of the circuit breaker must remain grounded due to safety reasons. In such case the current is injected into the ground path while a flexible Rogowski coil is attached around one side of the grounded terminals. If you have any additional questions, feel free to contact our technical support team - they are happy to help you: www.omicronenergy.com/en/support/technical-support/
Best regards,
your OMICRON team
I DON'T UNDERSTAND THIS STUFFS BUT I LIKE THIS VIDEOS. ONLY THINK THIS GUYS ARE AMAZING.
I've never heard of this company, but this is a quality video
Good stuff. Nice testing and measurement tools too, made specifically for a job and analysis of data. The principle is very simple, but the tooling and analysis is what makes it awesome.
How often are these high pot tests made? Annually?
Dear Dorothy Gale,
The high potential test is not a default test within a standard test plan. This test is common for different areas (e.g. USA). In this areas high potential tests are an integral component of revision/maintenance measurements.
The frequency of revisions/maintenances is related to the CB manufacturer as well as the substation operator.
Best regards,
Your OMICRON team
That breaker is the old Sprecher and Schuu V head. Was a beaut.
You can say that again. I have been in this industry 35 years post grad. Still my favourite HV and EHV switchgear.
Very well presented, but how often should these tests be carried out??
Dear kisakye tommy,
Test intervals for circuit breakers can differ a lot depending on the type of breaker and usage. While a circuit breaker can operate thousands of times under normal conditions, it can only interrupt about 5-15 short-circuits. Therefore, a condition based maintenance interval is preferable. Generally speaking, circuit breakers will be tested about every 6-10 years on average.
Best Regards
your OMICRON team
Well now, I don’t know what I learned but I am heading to our nearest step down to access. Wish me luck!🥰
How do they turn these one and off without causing a surge or spike? How do they deal with a power supply that has lost a third of a phase or when one of the 3 power supply circuits is lost?
Dear Phillip Mulligan,
While the interrupter opens, the spark is controlled by the extinguishing medium (compressed air, oil, vacuum or SF6).
The protection relay of the power grid trips and the whole 3 phase system is out of operation or a backup line is used to ensure a smooth power transmission.
Best regards,
Your OMICRON team
Thanks for the info. I didn't expect it to be this simple. I always thought the power grid as a very complex system that was pretty fragile. Epcor up here in Alberta goes to extreme measures to insure such an event is very rare.
OMICRONenergy
Phillip Mullig
Phillip Mulligan everyone does
3:22 Why should they be grouded for safety conditions? Also, in this context, does "ground" mean to connect it to the soil or planet Earth, or does it mean something else?
Dear Alejandro Nava,
Thanks for watching this video and for your interest.
The grounding is there to have no potential from e.g. induced voltages. In this context the ground refers to the ground potential. Usually there is a grounding point somewhere below the breaker where you connect these grounding rods seen in the video.
If you want to find out more about this subject and our products, check out our LinkedIn channel www.linkedin.com/company/omicron-electronics or get in touch with us directly. Please find your local contact person here: www.omicronenergy.com/addresses.
Best regards,
your OMICRON team
@@omicronenergy Thank you for the kind reply!
this videos was fantastic . gives the knowledge and helpful to the students and others
Great Guide about Circuit Breaker....
I didn’t understand most of that but I loved the video because I learned something new.
suddenly appear on my recommendation, but it fascinating
Thank you! Well made video, very easy to follow and understand!
never is late to learn , I love it
I work for a power company, but im just an IT guy.. this is interesting
What schooling do I need to learn this stuff?
Extremely informative. Thanks.
how about power factor test? is that necessary to do the power factor test to CB?
Dear Vincentius Raki Mahindhara,
For older (oil-isolated) CBs, power factor tests can be performed, but are not really common.
Newer generations of CBs are isolated with SF6 or vacuum.
For these CBs it is more common to either test the SF6 with a SF6 analyzer or check if a vacuum is present.
With an SF6 analyzer the gas is tested for dew/frost point, ppmv and ppmw as well as the SF6 purity (% Vol. SF6).
Best regards,
Your OMICRON team
valuable information on this video, thank you
Nice video, it’s always cool to learn how things in the world around you work.
awesome sir,,,,but show me some sample readings in abnormal conditions,,how it behaves that time,,,
I've always wondered about this stuff, very interesting!
Hey, nice vid. What is the equipment shown in 3:02? Is it always a breaker? Thanks
Hi Jorge, What you see is a North America Substation with so called “Dead Tank” circuit breakers. Typical for such breakers is that they have current transformers mounted on each pole.
I wish I had my own high voltage substation to fuck around with.
Many companies underestimate these tests. Usualy, this tests are expensives, because you need especificaly equipiments and workers who are trained to operate and get the best and correctly results.
But, one failure on one circuit breaker may cause big loses to companies.
Very interesting, I enjoy learning these things :)
Good vid. I was wondering if you'd do a DGA analysis on these types of CB's? Or is that strictly for a XFRM?
Dear araki916,
DGA is not only restricted to power transformers, it is also done on On-Load Tap Changers, Bulk-Oil Circuit Breakers, Oil-Immersed Reactors and so on. Nevertheless, for this type of Circuit Breakers (Minimum Oil Circuit Breakers) DGA is not required, since the oil is utilized as interrupting media and not as an insulation media. Instead of DGA, another measurements are conducted like Oil Dielectric Breakdown and Interfacial Tension among others.
Best regards,
Your OMICRON team
Excellent video!
Really Thanks
The Video Explained Very Well The Operation Mechanism Of High Voltage Circuit Breaker
:)
Thanks for the information
Very informative video, thanks!
Looks like a super high tech mouse trap
Finish
What's that tool @4:25??
MatLab!!?
Dear Praneeth Krishna,
that is our Primary Test Manager (PTM). This software is used for controlling a lot of our test devices and can be used as a database for all the tests performed. Find out more: www.omicronenergy.com/en/products/primary-test-manager-ptm/
Best regards,
Your OMICRON team
Very educational! Tx
Love that switch
Awesome video 👍
Great job 👍,
"Sv "
Nice explanation, TARS.
This is amazing, thanks
Thanks youtube for recommodation after 7 years
any one could explain what is power factor test..
Dear aldrin p a,
The power factor (or dissipation factor) is among others used to determine the condition of an insulation material.
As mentioned in this video, also the circuit breaker bushings have to be tested.
One parameter of testing the bushings is the power factor.
Best regards,
Your OMICRON team
A reassuring set of test done here, although, all that exposed mechanics which I would think would lock up in the winter with ice. The internal mechanicals will slow up too, the grease will become hard. These tests need to be done under worst case scenario too.
Thanks for posting,interesting 👍
0:44 Is that the Russian 1150kV line?
wonderful video
Thanks, very useful. Good job.
Thank you. Liked this
Yep. A critical part of that miracle known as the electrical supply grid most people take for granted and are profoundly ignorant concerning the functioning of. The underpinnings of our modern society rather than social engineering should be taught in our schools.
thank you for sharing!
walking dead guy, his voice is almost the same!
nice video guys! thanks,
Good to know 😁😎
Nice I. Am. Satisfied
Good Mr. Verma, now this equipment will work perfect. :)
Please share the background music
Dear amir tv,
thanks for your interest!
Unfortunately we cannot share this music as it is our own composition that must not be reused without our consent.
If you have any questions regarding our products and services, please feel free to get in touch with your local contact person: www.omicronenergy.com/en/contact/addresses
Best regards,
Your OMICRON team
Great video guys. By the way that voice sounds like TARS' lol (Bill Irwin?)
Hahaha, it does! "Hey Coop!"
Amazing
Great Video
It's a beautiful thing... so long as you don't run the toaster and microwave at the same time.
Unless they are on different circuits.
Ours was the microwave and coffee pot 😂
What happens if you do?
thanks for the contribution, very good information.
breaker analyzer. contact resistance,bounce discrepancy,insulation,sf6 purity dan dew point
Thank u for watching us a very usefull vedio,because it may help in my professional life.I am a worker of bangladesh rural electrification board.This kind of vedio also encourage us for sefty.
It's very good.
Awesome current events happen here.
Love this stuff. I need a career change...!
Great Mr engineer
EDIT: Accusatory comment removed following response from OMICRONenergy.
Dear Gj23jk2,
We appreciate your open feedback.
We totally agree with you that paying 3rd party companies for commenting and sharing of videos is an unethical business behaviour.
Therefore we have never paid any 3rd party companies for commenting or any other social interactions on our videos.
This wouldn’t fit to the values, business ethics and code of conduct of our company.
Best regards,
Your OMICRON team
Thank you for your professional and respectful reply.
In acknowledgement of your frank response, I will delete my original remarks. Suspicion and rudeness should not supersede politeness, even in this crude day and age. I apologize if I created offense.
Good day.
Now apologize for creating suspicious!