Automatic transfer switch setup and quick look at 3 types
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- Опубликовано: 14 окт 2024
- How you can utilize contactors as automatic transfer switch between grid and solar
-- More information below! --
By using an ATS or changeover switch allows you to switch between solar and grid.
It can be done via relays or even manual contactors
Links (Ebay)
Contactors
goo.gl/9xwtwc (EU version 230V)
goo.gl/svXcwf (US version 120V)
1-0-2 Switch
goo.gl/gPMvVT
Din/Norm changeover switch
goo.gl/EFCzhi
Controller for above contactor:
goo.gl/Tzpr4Z
Beware of that you have correct voltage and its dimensioned and legal where you live. Some of them may not be able to transfer during full load!!
Pending videos:
How to set up a simple solar system
Part 1 and 2 of redoing my solar setup system
Alot more....
My website: diytechandrepai...
Powerwall forum: goo.gl/gBFLJE
BMS i use from Batrium: www.batrium.com/
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Patreon: / diytech
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Very simple and straight forward ... easily the best Contactors primer you'll find on the net!!! I LIKE!
Mind blown . Great job I will have to watch this 25 times to grasp it.
nice to see your next video regarding the automatic transfer switch. (ATS)
that's a pretty cool system. have to remember that when I _eventually_ change my solar to hybrid with battery backup .
Hello. Thank uou for the educational video. i am wondering how one would wire 3 contactors for 3 source of power. Thank you
Could you please update the links for the contactors? Thank you
I was watching this video for a compltely different reason than "house" electronics. But heck i learned alot! Thanks :)
Very excellent work and very wonderful explanation we hope to see in the near future publish us more about electricity 3vaz and how to convert between them and bring out one fiz
BDW good explanation.
I have 3 phases from the grid, many times when there are storms only one phase goes out, the other two work. I have the idea of putting a separate relay for each phase, and in the event of a failure, two phases are powered from the grid, and one phase from battery solar power. what do you think DIY Tech & Repairs ?
This is just what I was looking for Sire.
Thanks.
Two lines changeover system very good Way to explain
I bought a three phase drum switch, not one pictured, from China. I was to use it for switching PV panels. Four independent switches if the jumpers are removed, ON/OFF/ON. But, the switches make before the other ones break causing a momentary short and starting an arc that didn't stop. Apparently all just to save a little plastic on the cam.
Excellent video and a fantastic introduction to this topic for me! Thank you and please continue with the videos.
in America your central panel usually comes with a 100Amp double breaker, this system of your can be applied to split face(120V,120V)
Great and clear explanation. Danke Schon. I believe you are speaking German english
Doing it with a single contactor will save you the stress of loking for a way to control the switching when there is supply from both source. Thanks.
Techno Thrviller its not legal or wise doing that with ac :) Most of them can potentially engage both in case of failure. You need the mechanical interlock and in some the electrical
You are Brilliant! Love your work.. Thanks
Great Job mine is working great. really smooth transition very little voltage drop underload.
Nice interlocking lesson.
Sir you have a very interested teaching of a electrical installation education. Which number of terminal numbers to connect cable in ?
Thanks for the Video again. Just a small question. Is there any breaker which I can control with output from 8 channel relay? Will be happy to have your answer.
Great video! Can you give the part number/manufacturer for the contactors and interlock? Your ebay link for these items does not work. Thanks!
Thanks for this video. However the Ebay links for the contactors you demonstrate are no longer valid. Can you identify the manufacturer and model so that I can search for them? Thanks so much.
Something i don't understand. At first you showed that pressing one contactor would not allow the other, but once you connected it to the switches you were able to press one and turn the other off. When you press the button does it first open/close the switches on the side to release the other contactor before this one engages?
Yes. It need to disengage first to engage second.
am really enjoying the video clips tutorials on this site. keep it up
Excellent Video - need a way to add a relay or use this method to disconnect my Converter/charger since my Transfer switch, switches the entire input from (Shore power/Generator) to Inverter. So in a nutshell can I control 1 Circuit so when the Inverter is (live) the 1 Circuit feeding the (Converter) disconnects?
More videos on this particular subject please.. control with external stuff.. thx
Can't find anywhere to buy. Please give me some advice.
Beautiful video wish you make more of these.
I've seen some installations using 2 contactors but ALSO a relay . Is a relay even necessary??The circuit you have shown works perfectly well without a relay.
Can anyone please help me understand "why the an additional relay " is necessary.
The relay may be to control the contactors?
Thank you for the video. I will be buying the switches to use for my solar power installation
This is a good automatic contactor switch i like it
Question. I have 220 coming from inverter and grid. Everyone shows line and neutral only. How would it be wired for 220 wit two hots and a neutral?
Is there a possibility for you to re-add the links, both contactor and connectors are no longer available 😢
Thanks for this video man
Good day. I surely found this video very educational and the way you explained it is fantastic. However, I have a challenge to make my own as the components we get in our country does not correspond exactly with yours. The main difference is the areas of the input power and the output. Especially with A1 and A2. I am not an electrician therefore it seems a bit strange to me. Is there another video or can you explain to me the positioning of the in/outputs for the SASSIN contactor. I would surely appreciate it
1:00 Technically as written on the label, it is a Left, Stop, Right Switch more likely used on AC motor direction control.
Verry good video and explained. I'm intersting to do this ATS for my solar and grid. Actually i made manualy transfer. Nice work. Regards
Excellent explanation
Hi thanks for this informative video, however the link to this product is not working. Any chance of checking this
Thanks
which one of the links? This one? www.ebay.com/itm/4PRO-CEM-40-Contactor-Set-3P-40A-230-400V-50-60Hz/202755297054?_trkparms=aid%3D1110012%26algo%3DSPLICE.SOIPOST%26ao%3D1%26asc%3D20200122160600%26meid%3Dd9b120272af6451da0d66adcb57c2804%26pid%3D100011%26rk%3D1%26rkt%3D12%26sd%3D201490751145%26itm%3D202755297054%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DPromotedSellersOtherItemsV2%26brand%3DPRO&_trksid=p2047675.c100011.m1850
have you check the screw on the contactors, usually they move the square flat part to press the cable, in this case I think I need some spade terminal, but I'm not sure.
man o man you are a super great educater very clear and understandable thank you
The link to Ebay is not working now. May you please state the brand, and model of this contactors. This will fix a big problem for me. Thanks
How to buy the product?with locking for double
Great video, one question: I believe the same thing could be done *without* having to buy a contactor with AUX ports shown here. As long as the contactors use opposite circuits (one Normally Open (NO), one Normally Closed (NC)). This way, the charge of one closes/opens the other. Would you agree?
No and yes. depends on the contactor of course.
Thank you for the reply.
Your "No and yes" answer is odd because I'm referring to fundamental contactors, nothing more. *The feature enabling this is your "lockout" mechanism, not the type of contactor.*
Providing they are only used in the NO+NC combination, and wired so that the current from one causes the other to do the opposite (one has to open when the other closes), this should be all that matters, correct?
That is then a Manual transfer switch. This is automatic as the grid power goes off and comes back on again, it switches 100% to the other system. They Energy companies cannot have people's solar panels or large batteries electrifying the local powerlines they are working on.
@@SuziRider5D - What I've explained is an ATS, a fully automatic transfer switch. You may have misunderstood.
One contactor is NO (NOT allowing current when unpowered). One contactor is NC (allowing current when unpowered).
It works by using both contactors in opposing fashion, combined with the physical lockout mentioned in the video.
In the demonstration we see that the move from grid to solar is almost instant. Does a load, feel the switch or is it really that fast that not even a light will flicker?
It can flickor. Its an outage of around 10-15ms. For instance fluorescent lights often can flicker and some very sensitive conputers can react to it.
It is so useful video. Thank you so much. Ethiopia
short and excellent tutorial
Excellent video
Can we control this type of ATS with a timer control switch ?
Like I want my load to be connected to Solar during the daytime and change to to the Grid from sunset to sunrise
Yes you can. Hook Up an esp as example and some code :)
Wow.....that is very nice wow!!!!! 100%
You're a great teacher!
Sir., Good day to you My question is we can use this contractor even my supply is single-phase or line to ground?
Hey I really liked your video. I’m living in Iraq and we use generator quite a bit. Was quite interested in the din/norm switch and if it would be any use for a hot water tank. We are currently constantly turning it n off manually whenever the power grid goes out. Cheers.
Can I use that switch and diagram for two (2) power source from the electric meters
Brilliant, can you make a video showing the hookup for the external controller?
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@Pablo Mekhi instablaster =)
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Hey! A pretty interesting watch! I love contactors! However, I got a question about the switch. Is there any sort of phase shift when the switch happens? How fast is it? Would it be fast enough to keep your electronics up and running, etc?
10-20ms switch.
@@DIYTechRepairs Interesting and hopeful. Judging from the Biltema multimeter, this is a 50Hz area which would put this in the sweetspot zone as far as timing is concerned. I'm just concerned that the two different phases have a chance to overlap, but with 10-20ms delay that should not be an issue. I guess I'll try to hook it up and find out for myself. Thanks for the reply!
@@eowendyl they can overlap and potentially destroy your Gear. Thats why its better to use the inverters built in transfer since most of them sync with grid. Doing that is better.
@@DIYTechRepairs ll
Is this allowed?
What is the time difference between cutting off one and energising the other?
Here we are required to "break before make", so you have to break the grid connection before connecting the alternate supply.
That's why you have mechanical interlock. They are allowed depending on area.
@@DIYTechRepairs so what's the time between break and make?
@@the_real_hislordship 10 to 20ms.
keep it up, you make so useful videos for help to build diy solar :-);-) great idea, i have order one, thanks for helpness
so nice of you
Which fuse should connect power connections to the power inverter 5000w?
Very informative, thank you for uploading!
I am facing a problem. In our building there is DG set .which is being used as a emergency power source..and main source of power is from utility..
But we are getting triping at ATS point...when generator starts automatically on swiching off utility power...voltage is being supplied from generator..but at ATS we are getting one phase out of 3 phase ..triping...plz suggest me techincal idea..how to resolve this problem...
Hi thanks for your video may you please explain me how to configure contactors if I want that my solar system be the main input and the public grid the backup? so if batteries are with low voltage or energy, contactors switch to the main grid to feed my loads, and when my batteries have enough energy, contactors switch again to my solar system. I will appreciate your help.
You need something that checks the voltage and controls the contactor. Can be all from an Arduino to something else
Very nice sir give me some more idea about your ats
I made the assembly exactly like you, I connected a light bulb in parallel on both outputs of the contactor but it goes only one. Normally I have 2 inputs, grid and solar and when I switch the solar switch I have to have voltage at the output of the contactor for so when I count the switch on the grid I have to have a voltage at the output of the contactor on the grid. If the voltage drop on the grid does not go to switch on the solar automatically. Maybe you can help me with a schema for my problem. Thank you
Look at the schema i added.
VERY GOOD ACADEMIC COURSE
thank you for that sharing
Daniel, so these always include a short moment when there is NO source, because of the switching times...
I'm not 100% familiar with your setup (because it's allways improving ;-) ) but is this a problem in your case?
Would it be a good idea to include a UPS of some sorts to keep the load powered when the switching occurs?
Thanks for your insights (and your dozens of highly informative video's!)
+wimpie007 im not 100% sure of ur question. Above does the same as to what an offline ups does. Same as what most inverters also does in terms of switching between load :)
Yeah, sorry, I was a bit tired.
Comparing it to an offline UPS explains it for me. At the exact moment when it switches between the sources, there is 0 Volt going to the load, so you can't use this circuit to power your computer.
wimpie007 of course you can power computer with it. As i said same principle as offline ups. And the computer runs on dc load with big caps so it will have time. Not sure how long but the 10ms it takes to switch is ok. Its the same as Most inverters have like both mine. Will be in next video :) analog equipment like some fluorescent lights will complain though. Note that its not ssr but relay so it will switch directly.
Okay, didn't know it worked so quickly.
Thanks for taking the time to explain!
Ur welome! I hope to get next video up this weekend when i show from the scope how it looks when switching and the actuall switch time. As said by another guy earlier if you switch between 2 sources you can get issues but most inverters actually sync the load with the grid so that switching is not an big issues. its just 10ms when there is no AC out. In fact its 1 half wave ouf of the 50 if we talk about 50hz system
Sir., Thank you so much, Excellent presentation and very useful. God Bless you🙏👍
Hello, have you some similar but for 3 loads, i have 1.- generator (110v), 2.- inverter (110v) and 3.- city charge (110v) i need protect my RV
hi can u share the line diagram of system you have shown
I like the word stupid failures, btw will this work with a 25kva generator?
As Long as the ats is big enough :)
Hi. i just want to know if this is applicable also with power inverter instead of solar power?
It is but a normal inverter doesnt sync with grid and when switching you can end Up with a nasty spike
Good education
Many thanks for you time, really useful lesson
From the grid to the main breaker. The load center get all the power from the main breaker. Where are you going to install your ATS
Its Placed in between the feed to my house and the Inverter. Will put up drawing once its done in real life
How can work automatically when conected to solar sirquit? How it can realize the low battery voltage inorder to be changed?
You need to have something between that can Sense the voltage.
@@DIYTechRepairs ok as i understood , i need two switches and something that can be conected to 24v input inverter poles correct so far? So what is that item i need on between to be adjusted at 22v -27(off-on. Solar power ) and what we do when we have 3 phase public electrical in the first switcher and one from inverter to the second? May work if we conect the switchers output of solar one phese with the other two public electrical output s in parallel, so when the public sirquit is closed we supply our home solar one? Any help would be helpful.
Where do i buy the mechanical safety lock? Can any body help me?
Daniel If I want to manually transfer from Grid to Solar and vise versa will I loose power in the house during the transfer or is it seemless? I need to setup a system that I can switch to Battery every night but I need it to be a transparent switch.
IF the switch is fast enough its fine. Just make sure that the grid and inverter is synced or you Will generate a Spike
can you make a video whats inside those mechanical interlocks? i am planning to make one.. T_T i cant bought it anywhere here at my place... but i do know how to fabricate..
thanks im big fan of yours..
I dont think its rellevant to look at that If you ask me. For proper isolation you need approved gear so head for that. The mechanical interlock is just e lever that makes sure only one can engate at a time.
@@DIYTechRepairs i cant find pictures as to what the inside looks like.. i have an idea as to how it works.. but i want to look whats inside a commercial interlock.... and i might just copy the design.. fabricate it for my contactors....
@@silverghost3506 i wont dismantle My contactors since i want Them functional. Its most likely just cheaper getting new ones
Excellent best freind, you are electrical maintenan
Make that as full battery priority.....so when battery's goes up to 55v goes on inverter mode without utility and when is lower than 48v goes back to utility without charging the battery with utility... and with possibility to charge the battery with solar.... 👍
I use XH-M602 circuit with small modification.... originally is equipped with relay that have only NO as normaly open contact... 👍 I have replaced that relay with one that has NO and NC normaly closed contact to use both contact's ....
So that board give the command what will I use utility or solar depending on state of battery .....👍
What you think about that solution.....?
Hi Bostjan, I also use contactor to switch between grid and PV. My contactor is 2 NO and 2 NC. The battery voltage determines whether I am on the grid or on solar. I use a Morningstar relay driver with 4 ports, all individually programmed with a max and min voltage setting. thus my 3 sets of panels: 2 off 2.5 kW and one off 1 kW, all with Enphase micro inverters. The ports on the relay driver switches on and off the sets as required determined by the 48 volt battery bank. Cheers
john
bender banana
Hello
Actually I was using this setup to switch on/off electric heater because I have li-ion battery and are very quickly full so what to doo with all electricity when are battery full and I have no load to use all that electricity switching to the heater that heat my 200l tank for shower.....
bender banana
Also a second heater to support our heating system (I use heat pump for heating) heater 1.5kw x 2 would be installed before the heat pump....
DO YOU HAVE A MODEL NUMBER FOR THIS CONTACTOR
So, I could go from solar to generator. If my generator kicks on solar gets cut off or visa versa.
hello bro, very good explanation.
can you explain how to automatically turn on generator. I am wondering to apply this system in the residence.
First of all your generator need to be able to work with remote-start. If thats possible then its just a matter of timer and to get it to engage. I dont have any generator to test or build this up so cant help much today. I have not done this myself but read alot about it and there is plenty of other that have done it :)
V,good ,good saftey
Thank you sir but please what if you want to use grid, solar and generator can you please give me some lessons on it
Get your self a 1-0-2-0-3 switch or combine 2 of 1-0-2 switches
Can you send me the circuit diagram which you used I need to do a try. Thank you in advance
I am looking for the interlock part number or link. Any help would be appreciated.
What happens of we don’t use the mechanical interlock?
@@XumiTran you could engage both sides on failure and be non compliant. (depending on application)
@@DIYTechRepairs thank you op.
very nice work
Wel explained there, nice video.
Aslam elakum dear friend good very nice video
Well explained, thank you!
Please..give full video the ATS switch.froom power generator...
Well explained. Thank you sir
Hi I've manage to do it but I'm facing an issue. When main is off, the generator contactor engage normally, but when main is back online, the contactor tries to engage but it's like it's overlapping. And makes that sounds like it's trying hard to engage papapapapapapa. Can you help please? Thank you.
Thats because you hooked it up wrong. Either it drops the contact because you hooked up the main through the other side so it looses contact or you have the mechanical lock engaged. You need to read up on the connection and how those works. Beware of that hooking ATS up can be lethal and can cause huge issues if not done properly.
If we have 3
1 grid
2 solar
and if solar is off and grid is also off
3 generator
Then what we have to do
Why would you not just use a 3p2t relay instead? Seems like its overcomplicating a simple problem.
It will not have an OFF option then.
IT is very interesting and important lecture and 10q so much .could you upload the code please sir
Can we use this for single phase? 3 pole contactor!
Yes you can!
You dont need control system to control which one is the first one(9:50). You connect your both main power wires straight to one connector, not one wire thru other contactors relay.
Ok. Thanks for pointing it out!