MEP 804A RETAPPING

[rangerxp1000]

Has anyone tried retaping a 804 A unit from 3 phase to single phase,

 

[Scoobyshep]

Has anyone tried retaping a 804 A unit from 3 phase to single phase,

IIRC the head on the 804 is only 10 lead (T10, T11, and T12 are bonded internally) So without a head rewind you cant.

 

[Ray70]

Hundreds of discussions about the subject here on the forum, but as Scoobyshep stated it's pretty much impossible with the 10 wire gen head.

 

[Scoobyshep]

If you really really want to you can set the unit to 416 volt and use transformers. But that might be a touch excessive

 

[Guyfang]

I wish we could put this old wives tale to bed. Its not possible.

 

[jamawieb]

Yes Ive done it. Ive discussed it in the past. Its very simple. On my next conversion I will take pictures. Ive switched over around 20 804 and 805a's.

 

[Ray70]

Do you have a link to where you previously discussed your conversions?

 

[jamawieb]

Do you have a link to where you previously discussed your conversions?

Let me see if I can find it. It wasn't a thread I started. The idea came from SmokeStak where an individual talked about a Bar Diamond connection. Worked on the theory with some other guys and it worked. The only set back we had was the VR. The original VR reads off all 3 legs to generate power. With Kurt Klopp's VR development, it was a game changer because his VR on reads off of 1 leg. So with the conversion, you have to put in Kurts VR, the remaining conversion is completed on the reconnection board. Its actually easier to do than the older 004 and 005 models. I have logged several thousand hours on 804s so the conversion is very dependable.

 

[2Pbfeet]

Let me see if I can find it. It wasn't a thread I started. The idea came from SmokeStak where an individual talked about a Bar Diamond connection. Worked on the theory with some other guys and it worked. The only set back we had was the VR. The original VR reads off all 3 legs to generate power. With Kurt Klopp's VR development, it was a game changer because his VR on reads off of 1 leg. So with the conversion, you have to put in Kurts VR, the remaining conversion is completed on the reconnection board. Its actually easier to do than the older 004 and 005 models. I have logged several thousand hours on 804s so the conversion is very dependable.

Are the threads by WA Ross? E.g.

Generator Conversion - Electric power & transmission & distribution - Eng-Tips

I brought a 3 phase generator cheaply thinking it would suit me better than a single. However I have found that three phase equipment for domestic use is prohib

www.eng-tips.com

Bar Diamond or Collins Connection for 10 Lead 1 Phase 120/240

One W.A. "Bill" Ross on the eng-tips forum seems to have invented this connection. I have never found it in any book or publication. However I have used it when a customer wanted 120/240 1 phase out of a 10 lead machine with T10/T0 all bonded together. It works great and what is even greater...

www.smokstak.com

He seems very confident of his views, and they seem supported by diagrams that don't look crazy to me, but I am not an electrical engineer. He does point out the 1/3 loss in KVA capacity.

All the best,

2Pbfeet

 

[jamawieb]

Are the threads by WA Ross? E.g.

Generator Conversion - Electric power & transmission & distribution - Eng-Tips

I brought a 3 phase generator cheaply thinking it would suit me better than a single. However I have found that three phase equipment for domestic use is prohib

www.eng-tips.com

Bar Diamond or Collins Connection for 10 Lead 1 Phase 120/240

One W.A. "Bill" Ross on the eng-tips forum seems to have invented this connection. I have never found it in any book or publication. However I have used it when a customer wanted 120/240 1 phase out of a 10 lead machine with T10/T0 all bonded together. It works great and what is even greater...

www.smokstak.com

He seems very confident of his views, and they seem supported by diagrams that don't look crazy to me, but I am not an electrical engineer. He does point out the 1/3 loss in KVA capacity.

All the best,

2Pbfeet

That is one of the articles. I shared the conversion with Peter who owns Innovahightech because he was very confident that it could NOT be done. He contacted electrical engineers with Marthon and explained the conversion, to his surprise they confirmed the ability with my drawings. Rated output of the generator is still 15kw on the 804 and 30kw on the 805. But anything over that trips the overload. Usually on the 804 I can push them until 19-20kw before overload happens.

 

[2Pbfeet]

That is one of the articles. I shared the conversion with Peter who owns Innovahightech because he was very confident that it could NOT be done. He contacted electrical engineers with Marthon and explained the conversion, to his surprise they confirmed the ability with my drawings. Rated output of the generator is still 15kw on the 804 and 30kw on the 805. But anything over that trips the overload. Usually on the 804 I can push them until 19-20kw before overload happens.

Thanks for the deep due diligence on your and Peter's (@peapvp) part! It is nice to know that on the 804/805 sets that there is no loss in capacity.

All the best,

2PbFeet

 

[Guyfang]

Good news!

 

[peapvp]

That is one of the articles. I shared the conversion with Peter who owns Innovahightech because he was very confident that it could NOT be done. He contacted electrical engineers with Marthon and explained the conversion, to his surprise they confirmed the ability with my drawings. Rated output of the generator is still 15kw on the 804 and 30kw on the 805. But anything over that trips the overload. Usually on the 804 I can push them until 19-20kw before overload happens.

@jamawieb
I am getting old, when did I have this conversation with you and Marathon(?)
I can’t remember this conversation and just checked my email archives and my steelsoldiers pm