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You're not getting exciter field current from the usual source. When you hold the switch in the start position, current is supplied to the exciter from the 24v battery. In normal operation it comes from the X windings of CVT1 (X1, X2, X3), goes to the diode board to be made into DC, then...

Interesting story. As much as I've tried, I've never been able to correlate battery brand or battery cost with battery life. A couple Walmart Everstart Maxx group 24 batteries lasted nine years in my 003A, and I've never put a charger on them. I just run the generator once a month if I can...

It would take quite a commitment if you wanted the whole system to be 12v.

If you want simple, inexpensive, and reliable but not glamorous, this type works fine. I've had one on mine for 8 years and it works well.

Also any electrical/electronic equipment that has a power supply that first converts AC to DC (like most do) should be OK on 400 Hz. I'm not guaranteeing this of course. :)

Wow, 300 lbs! They may take a load for quite a while before they get hot! Are they made so they can be configured? Like can you unplug modules to increase the resistance, for example?

You could put several of these in series, adding 1.5 ohms each time you add one. The catch is knowing how much power they can handle for some reasonable time like several minutes or an hour, or whatever amount of time you want to load the generator. I'm not familiar with them to know the...

Actually while that's true for many generators, it's not true for the 002A and 003A. The regulator controls the generator output by passing a small control current through the control winding of CVT1, causing its output to the exciter field to be reduced. This means that if you run below 1,800...

As Guy said, its in the -24 manual. https://www.steelsoldiers.com/threads/all-the-tms-you-need-to-work-on-the-mep-002a.155935/

Now that's funny!

IN

We have too much rainfall here for that to work. :)

One has to think along the lines of "What did a huge current spike damage?" Does your reconnect switch work as it should, allowing you to select single phase and 3-phase configurations? The contacts in that switch had to take some abuse during the "event". Forgive me if this was covered...

If it were mine, I'd assume you're within measurement error of correct. But I'm going my experience with transformers in general, and not the very special CVT1. (leaving an excuse in case I'm wrong)

The regulator I sent you, like the original, applies current to the control winding of CVT1 when the generator output is too high. This control current reduces CVT1's output to the diode bridge that supplies the exciter field. The SX-460 directly supplies exciter current. The stock type...

In

It's been a while since I looked at mine, but I think there are two heat sinks, each with three diodes on it. Look around the full circle. There are three of each of two types. One type is cathode on the threaded stud and the other type is anode on the threaded stud. Here's some information...

Did you ever check the rotating diodes as DieselAddict suggested? I can't remember.

It's normal that the exciter voltage is less than 24. That resistor on the A4 board is there to drop the 24v to a lower value, limiting the current. I just started my 003A and measured the exciter voltage during cranking and when the engine started. It was less than 9v during cranking, and...

The manual to your meter should explain that the displayed number is the forward voltage drop of the diode. Here is an excerpt from the Fluke 87 manual: "Use the diode test to check diodes, transistors, silicon controlled rectifiers (SCRs), and other semiconductor devices. This function tests...