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#1 |
Member
![]() ![]() Join Date: Sep 2012
Location: mumbai
Posts: 46
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3 Phase 120VAC to 1 Phase 230VAC
How do i make this conversion ? shall i use a Transformer ?
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#2 |
Lifetime Supporting Member + Moderator
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transformrs rely on turns ratio's ONLY
Be aware of the load here you use a STEP UP transformer on one of the phases formula = 120/230 = 1:2 or (0.5217:1) turns ratio remember any current on the secondary side of the Transformer is multiplied by the turns ratio on the primary side. this is Single Phase to Single Phase but 230 v Ac might be 50 Hz not 60 as is the case with 120vac supplies (this might effect the device if you are not aware of it)
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![]() Give all the answers - People seldom learn. Guide People to the posibilities - Their Answers will come easily. - Their Knowledge will grow. They will then teach others Regards Ian Trost |
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#3 |
Member
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Yes.
The next question is what kind of transformer. (edit: and since Ian beat me to it, he already has given the answer and some other things to think about)
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Jean Pierre Vandecandelaere Professional expert industry VDAB Hoofdbestuur Gasthuisstraat 31 - 10e verd B-1000 Brussel Belgium Last edited by jvdcande; July 29th, 2013 at 02:07 AM. |
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#4 |
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![]() ![]() Join Date: Dec 2012
Location: Koprivnica, HR
Posts: 412
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what about using rectifier and inverter?
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#5 |
Lifetime Supporting Member + Moderator
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as Jean Pierre said
I should have answered Yes so Yes if you want to build one sso design it - it is your task for the day.
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![]() Give all the answers - People seldom learn. Guide People to the posibilities - Their Answers will come easily. - Their Knowledge will grow. They will then teach others Regards Ian Trost |
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#6 |
Member
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Maybe not.
How is the three phase network configured? @iant: there's nothing wrong with confusing somebody a little bit. It might make them think, at least I hope so.
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Jean Pierre Vandecandelaere Professional expert industry VDAB Hoofdbestuur Gasthuisstraat 31 - 10e verd B-1000 Brussel Belgium |
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#7 |
Lifetime Supporting Member + Moderator
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yep I coulnt help myself
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![]() Give all the answers - People seldom learn. Guide People to the posibilities - Their Answers will come easily. - Their Knowledge will grow. They will then teach others Regards Ian Trost |
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#8 |
Lifetime Supporting Member + Moderator
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I forgot to mention
after you have built the Inverter make sure that Microwaves will work with pulsed square wave generation
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![]() Give all the answers - People seldom learn. Guide People to the posibilities - Their Answers will come easily. - Their Knowledge will grow. They will then teach others Regards Ian Trost |
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#9 |
Lifetime Supporting Member + Moderator
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I suppose you could run a 3 phase motor generator
3 Phase 120v to 1 Phase 230v that might work
__________________
![]() Give all the answers - People seldom learn. Guide People to the posibilities - Their Answers will come easily. - Their Knowledge will grow. They will then teach others Regards Ian Trost |
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#10 |
Member
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Ian,
in the past we've used that method to generate 3-phase 400V 60hz out of 3-phase 380V 50Hz. You only have to choose the right setup. Another option is to buy (or rent) an emergency generator set with the right specs. Kind regards,
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Jean Pierre Vandecandelaere Professional expert industry VDAB Hoofdbestuur Gasthuisstraat 31 - 10e verd B-1000 Brussel Belgium |
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#11 |
Lifetime Supporting Member + Moderator
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380 V 3 phase 50 HZ
which country uses that? China?
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![]() Give all the answers - People seldom learn. Guide People to the posibilities - Their Answers will come easily. - Their Knowledge will grow. They will then teach others Regards Ian Trost |
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#12 |
Member
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Belgium at that time, and almost all European countries except the UK. Single phase was 220V.
We had to construct and test machinery for the far-east market and so needed a 3-phase 400V 60Hz supply. Nowadays we use 3-phase 415V 50Hz and 240V single phase. Kind regards,
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Jean Pierre Vandecandelaere Professional expert industry VDAB Hoofdbestuur Gasthuisstraat 31 - 10e verd B-1000 Brussel Belgium |
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#13 |
Member
![]() ![]() Join Date: Mar 2006
Location: Kansas
Posts: 1,695
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I'm more confused by the 3-phase 120...
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"I wonder how people did this before the days of PLCs?" If people would take the time to learn how a simple relay control circuit works..... [Helliana] |
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#14 |
Lifetime Supporting Member + Moderator
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__________________
![]() Give all the answers - People seldom learn. Guide People to the posibilities - Their Answers will come easily. - Their Knowledge will grow. They will then teach others Regards Ian Trost |
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#15 |
Member
![]() ![]() Join Date: Jul 2005
Location: Heath, TX
Posts: 2,026
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The voltage in India is 380/230, 50 Hz. When someone says 3 phase 120, I assume they mean 208/120.
gibson, what are you trying to do? Do you have a machine from the US you are trying to run? |
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