Daviesonthehill (Agricultural)(OP)3 Dec 23 19:45
" I have a generator currently on 110v an works fine but I want 220v from it how do I do this I have 8 wires coming out .the gen is 110v-220v 3000rpm 50hz"
I have the following proposals for your consideration.
1. The label shows 110-220 V. It is designed to be reconnectable from the existing 110 V to 220 V. Unfortunately this information is not shown on the name-plate. See whether the information is shown on the reverse side of the terminal cover.
2. If above failed, send a mail to the motor manufacture request the connection for 220 V.
3. Some of our friends may have information and would be able to advise.
4. If all above failed, you may use a 110 to 220 V 50 Hz step-up transformer. In this case, the gen is running as it is, at 110 V 3000rpm 50Hz. The output from the step-up transformer would be 220 V 50 Hz.
Che Kuan Yau (Singapore)

An educated guess with about a 97% probability.
That looks like a two winding machine, but eight leads suggests four windings.
HOWEVER, machines in that size may use two leads in parallel in place of single leads.
But we may be able to continue without knowing that.

It is not clear from the picture.
Is there a jumper from terminal 1 to terminal 6 or terminal 7.?
Is there a jumper from terminal 2 to terminal 6 or terminal 7.?
Can you confirm that there is 110 Volts between terminal 1 and terminal 2.?
Can you confirm that there is 110 Volts between terminal 6 and terminal 7.?
Waiting for your reply.

--------------------
Ohm's law
Not just a good idea;
It's the LAW!

Post the voltages across
1&2
1&6
1&7
2&6
2&7
6&7

Muthu
www.edison.co.in

Davies... It looks like you have three leads (two browns and a green/yellow) from the generator to your "remote outlet" connector. What I can't see is whether the two browns are to different terminations or the same one at the outlet. My guess is you measure 110 from each brown to green/yellow.

The motor leads are in pairs (parallel) to handle the output current requirement. There are two each to terminals 1,2,6, and 7 within the generator terminal box. The brown external leads are connected to T1 and T7; the green/yellow connection runs from the generator to T6, which is then connected to T2, and from T2 out to the "remote outlet".

To double the output voltage, the coils have to cut twice as many flux lines in the same time period. That happens by either doubling the frequency (i.e. spin faster), doubling the available coils passing through the flux (i.e. more turns per coil OR more coils), or radically change the machine geometry (affect the flux distribution factor).

Converting energy to motion for more than half a century

Or two parallel coils may be reconnected in series.
Still waiting for answers.

--------------------
Ohm's law
Not just a good idea;
It's the LAW!

It's a dual voltage generator. You just need the correct external configuration for 110/220 V.

OP needs to engage more here.

Muthu
www.edison.co.in

I suspect that there are two jumpers in the terminal box.
If so, removing one and reconnecting the other will give the desired 220 Volts.
But, no word from the OP.
Or, the generator may be wired for 220 Volts already and one connection needs to be moved.
But no word from the OP.

--------------------
Ohm's law
Not just a good idea;
It's the LAW!

My


So the current confirmation is
8-4 hot )
)110v between the 2
1-5 hot )
Wire 2-6
3-7
Go to earth

I have paired the wires with continuity
1-2
3-4
5-6
7-8

So just wondering if I went daisy chained (+) 1-2-3-4-5-6-7-8 (-) that would be series ? Sorry I'm no electric engineer I know a little but no expert .

At this point the easiest solution is to take it to a shop.
They will be able to quickly and easily reconnect the generator for 220 Volts.

--------------------
Ohm's law
Not just a good idea;
It's the LAW!

Mr. Daviesonthehill
1. I tried Google but failed to locate any information by Knylor Portable generator on reconnecting 110V to 220V.
2. As you are not electrical by training, it would be unwise to "experiment" it by your self.
3. Consider dismantle it, sending to the rewinding workshop for investigation and reconnecting and installing it back; the down time cost and the charges by the workshop may be far far more than by adding a 110/220V step-up transformer. The voltage ratio is NOT very critical. Any transformer say 115, 120V / 208, 230V would be fine. The output frequency would remain 50Hz. Connect the existing 110V to the say 115V, the output from the transformer say 230V would take only five minutes.
Che Kuan Yau (Singapore)

Thank you for every one's help ..taking it to a shop won't be worth it because its £50 -100 per hour in the UK labour at a rewind shop .so my thoughts now are to leave the 110v gen on as it is but add a 12 or 24v DC alternator to the pulley system in to a small battery then to a 240v inverter then even in the future run 48v system to charge lifpo4 correctly . The engine I'm running on will run all day on a gallon of fuel be it waste oil engine diesel or veg oil .thanks all .

Well, if you had accurately answered my post of
"4 Dec 23 00:12" I may have been able to give you as simple and sure solution.
Without accurate information I can't help you.
And, the generator may be already putting out 220 Volts, but you are not using it.
not my first rodeo and not my first re-connect.

--------------------
Ohm's law
Not just a good idea;
It's the LAW!