Mep006a No Wiring

[Mel]

Can anybodu help with this issue.

Have a MEP006A military generator, runes like a top but all ti has for wiring left comming from the generator is the 12 leads and 2 leads for the exiciter windings. Does anyone make a vr that I can wirn and get this thing to produce. I have megged the motor and check the excitor windings and everthing is ok. I do control panel work for a living so I am not afraid to try this just need some information. It is a 12 wire KURZ & ROOT CO. 60 kw.
I can install the gauges and misc controls but am not versed in the generaton part.

Melvin
South Louisiana

ps Have the plates off the unit and generator and all the printed plates on the generator, and also have the ct coils.

[Gunny]

Are the wires marked? Should be something like T1 through T12. If marked, real easy, post what voltage you want and one of us will get you fixed up. Many brands of gensets out there but when it comes to configuring them, they are all the same.

If you need a regulator, Power Tronics would be my choice.

One problem with a lot of military gensets is that they use a field flash circuit to get things going, little or not enough residual voltage to build up. Power Tronics has a universal regulator and a flash module to make it all happen.

If those wires aren't marked, well then we might have our work cut out for us. Most have a metal tag in addition to the leads being marked. Your voltage choices are 120/240 single phase, 120/240 three phase, 120/208 three phase and 277/480 three phase. Well there are other possibilities but that is the most common ones in use in the US today.

[Mel]

Thanks GUNNY

Yes all wires are marked. Basically all the mitilary wiring and controls are in a big box, cut out and unbolted. Was trying to keep from completely having to put all the stuff back on . If I could just bolt on a modern avr and wire up some gauges that,s all I would need. I rewire a bunch of motors all the time so no big deal on that, it still has the change over plate on it so it will be easy, It is now set up on low voltage. I might be wishing for too much, but know where about 3 more like this one is if it is cost effective to fix.

Thanks for the info and keep it comming.

mel

[Gunny]

Mel:
A genset is the same as an electric motor when it comes to configuring for what ever voltage scheme you want. A AVR with the sense/power leads coming off of wires #5 and #8 should do it for you. The military gensets used CTs to drive the ammeter and also for a current sense device which would drop out the load contactor (relay) if you overloaded it or had a short down stream of the CTs. If I were you, use the CTs to drive the ammeter and just use a break in the appropriate size to give you over current and short circuit protection.

A couple of the problems with those military gensets is that they were designed by a committee, got way too much stuff on them and will only cause you grief should anything ever go wrong, assemblies and parts are hard to find, a voltage regulator is an example of that. I have converted a lot of them, use a Panel Source control panel, got all the right meters, relays already mounted, comes with the right senders for oil pressure and temperature, got the right CTs, pretty cost effective, only need to add a voltage regulator and run it. Added bonus is that is now becomes capable of automatic start from an automatic transfer switch, a truly hand feature. Might want to add a jacket water heater if you are going to use auto start in cold weather. Going to assume you have a mechanical governor or else you'll need a governor controller too, Woodward makes one that works real well in that application, at a fair price should you need to go that way.

Let us know if we can help further.

[Mel]

Gunny,

Just getting back to you, went to the power-tronics site and have been reading all of it. Plenty of information on it and the training site was able to be opned with out any acc# or passwords.

I am going to take the measurements tomorrow and call them and see what they have to offer and prices.

Couldn,t have found that much information at one place it you hadn,t sent me to it, again thanks for the help.

I,ll monitor this site and if I am lucky I will be able to help someone out.

mel


Ps building a new shop,photos at PHOTOBUCKET search MEMCO123, check out my home built rotary phase converter.

thanks mel

[nitrolouie2142]

There is a place called Electronic Services Inc. check out the VR-400, or the VR-401. One of those should do the trick.

Lou