Discuss Output Max Amps in the Electrical Forum area at ElectriciansForums.net

Welcome to ElectriciansForums.net - The American Electrical Advice Forum
Head straight to the main forums to chat by click here:   American Electrical Advice Forum

What output current will I get if I have an input voltage of 700 volts at 1 amps and if I step the voltage down to 230 volts what would be the max amps I'll get.
Erin to start with what are you wanting to put 700 volts in what to get 1amp I guess there’s not enough information
 
Didn't think about that yet. 700 volts at 1 amp is single phase using a generator. I want single phase 230 volts. I want to know what max amps I'll get if I want to step down to 230 volts. Please advise
 
Is it a 3 phase transformer and what’s the KVA rating of the transformer
What is your normal voltage
[automerge]1572310691[/automerge]
Didn't think about that yet. 700 volts at 1 amp is single phase using a generator. I want single phase 230 volts. I want to know what max amps I'll get if I want to step down to 230 volts. Please advise
So if you start your generator you get 700 volts
[automerge]1572310869[/automerge]
What is your normal voltage
[automerge]1572310691[/automerge]

So if you start your generator you get 700 volts
If you want to step down to 230 volts you will need a transformer
[automerge]1572311028[/automerge]
What is your normal voltage
[automerge]1572310691[/automerge]

So if you start your generator you get 700 volts
[automerge]1572310869[/automerge]

If you want to step down to 230 volts you will need a transformer
I’m curious where did you get a generator that puts out 700 volts
 
Last edited:
I'll be connecting 100 motors in series (model of motor is 775 motor). All I know is that the winding of the month can handle around 1 amp current. Assuming 1 amp and 700 volts if I want to use a transformer to step it down to 230 volts what would be the max amps I'll get.
 
Hi - if it was a perfect transformer with no losses its a simple calculation 700/235 Amps. As this transformer doesn’t exist you’ll get a bit less.
 
Out of interest why are you connecting 100 motors in series?
 
Hi - if it was a perfect transformer with no losses its a simple calculation 700/235 Amps. As this transformer doesn’t exist you’ll get a bit less.
Oops, where’d that extra 5V come from?
 
I got one question how do you wire 100 motors in series, I would think that would be impossible
Anything is possible , but not necessarily a good design .
More points of failure ,
Labour to assemble ,
Hiding inefficiencies in multiple places = harder to measure !
( using whats available cheaply -adhoc .. feels like todays strategy )
--Rather dangerous if no earthing is present--
 
Ignoring transformer losses, Vout/Vin = Iin/Iout.
1 x 700/230 = 3.0 as Kidsolo states above.
Also as above, devices rated for 7V each won't normally have insulation capable of withstanding 700V. They would need to be insulated from each other and from ground adequately.

However...

You mention motors, but they are seemingly being used as generators. I'm picturing 100 small moving parts driven by wind or water or something, from which you want to harvest the total output. If you want to transform the output of a series connected string of mini AC generators they must all be in phase; 100 randomly moving AC generators wired in series will give near zero output volts. If they are synchronous, they must be mechanically locked together (in which case you could use one large generator). If they are asynchronous, they will need to draw magnetising current from the AC supply; this works for a single induction generator but I can imagine chaos with a large number of units in series.

Small AC generators are very rare and specialised. Are you sure they are not small permanent-magnet motors? If so, the outputs will still be DC when used as a generator, and a transformer will not help you. One approach would be to series-connect them in blocks of say 48V, which is safe and their insulation will probably be OK with, then use DC-DC converters with paralelled outputs to convert up to a suitable bus voltage for a DC-input AC inverter.

Some significant electronics / generator knowledge will be needed to find an effective solution.
 
Hi,Are these "motors" being used as generators?
....is there wind or water involved?
[automerge]1572360666[/automerge]
Darn it....on silly phone,and never read luciens post?
 
A weak point for series DC , the same current flows thru all ,if they are not generating a matching current (at same instant) they will become motors again. wasting what others have made.
(before embarking on an expensive combiner -need to understand the dynamics of loading generators , add an individual load to each one ,and test if currents are in sync and can be combined )
Open circuit voltages mean little without a load !
 

Reply to Output Max Amps in the Electrical Forum area at ElectriciansForums.net

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

Electrical Forum

Welcome to the Electrical Forum at ElectriciansForums.net. The friendliest electrical forum online. General electrical questions and answers can be found in the electrical forum.
This website was designed, optimised and is hosted by Untold Media. Operating under the name Untold Media since 2001.
Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock