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Messages - Biloxibad

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1
Generators / Re: ST-15 lost residual magenetism.
« on: January 25, 2012, 01:00:29 AM »
 :laugh:  It WORKED! ST15 risen rom the dead. Had lost residual magnetim. Many thanks to the folks , Chris and Tom over at Central Georgia Generator for their personal help, including the phone calls and moral support..    Worked like a Charm, putting out clean stable current again, just like when new!  You guys are Great!

thanks again

2
Generators / Re: ST-15 lost residual magenetism.
« on: January 10, 2012, 04:39:05 PM »
Thanks Ron, Raining now so will check when deluge is over.    Coastal Mississippi, Will probably set out onions , broccoli, cabbage and strawberries tomorrow, time to start planting here!

3
Generators / Re: ST-15 lost residual magenetism.
« on: January 10, 2012, 04:35:34 PM »
Thanks, for the quick replies,  The Unit came as a Set with the brand name Jiang Yang

4
Generators / ST-15 lost residual magenetism.
« on: January 10, 2012, 02:20:49 PM »
I have a ST-15 been sitting for about 6 months ,  getting revs, but no electrical output to exciter Rectifier diodes, thus no output from primary windings.  It is wired for 230 v with center map for 115.  Need to give it a "boost"  to restart the magnetism.  brushes are clean and show no shorts or open circuits athrough the windings.  I know I can re-magnetise with a 12V storage batt when running.

The question is:  How do I know what polarity to attach to which winding?  I found this schematic and manual on web, but mine has a freq, amp meter and adjustable AVR in the dog house, thus my wiring is labeled differently.  What happens if i get the jump polarity wrong,  the manual says to be SURE to get it correct when restoring, and since I will be working with a LIVE running 230v  15,000 watts,  65 amps  28 HP BEAST, i would love to get it right the first time.   

Any and all help appreciated.

Here is link to ST series GEN compliments from Utterpower http://www.utterpower.com/ST_manual.pdf  which has been extremely helpful in the past.

5
Other Slow Speed Diesels / Re: question about changfa style engine
« on: April 25, 2007, 07:45:35 PM »
It appears to be in a silenced cabinet already,  As others have said, just make sure that the exhaust is sealed and properly vented.  Also make sure that there is a Carbon Monoxide sensor with a remote alarm horn, so that you don't venture into the basement, in the event that CO is detected. 

Also since it is likely to be used in the event of a power failure, that both the CO detector and the alarm horn are always included in the circuits to be powered.

By the way, that is a very fine manual.

Steve

6
Listeroid Engines / Re: balancing the output of 12/2?
« on: April 24, 2007, 04:45:04 PM »
Chris You are so right,

I have also owned several aircraft,  the one I wish that I hadn't sold was a 1946 Aircoupe 415 C model, that I had installed a Rudder kit into, had to put the "EXPERIMENTAL" tag on it from then on! 

Had the Glide "balistics"  of a IRON SAFE!  but was sure fun to fly with the cockpit open at low RPM,  could hear train whistles.

AHHH the memories!


Steve

7
Changfa Engines / Re: Weichai 1115, 25hp Changfa-type
« on: April 24, 2007, 01:25:40 AM »
Traced the grounding and the 10 HP motor is grounded via the frame grounding to the main generator, so am getting the Terry's preferred wiring setup.   I rechecked everything and am still getting today 250V - 33A on the Metro6/1 and 62A 250V on the Changfa Clone with the ST15. (got every heater, dryer, welder and airconditioner in the place on at the same time LOL.)

When I cut the breakers to the 10 HP motor the changfa clone with the ST15 begins bellowing black smoke and blows a breaker.. (60 AMP).   The motor won't generate without the ST15 running or hooked up to another power source for excitation.

I am generating power in the correct direction as I installed a standard Utility type Electric meter in series from the Motor to the panel,  When I am running the motor at less than 1800 RPM the little wheel runs to the left very slowly , IT stops as I speed up to 1800 and  then begins to spin very fast to the right when I run the RPM up to about 1850 which is where I am at the above settings..

I wish I had some more sophisticated equipment to see what I am really putting out , but that would take a load maker wayayyy above what I need around the DIY homestead.

The fuel usage studies I intend to run will tell the tale I am sure

LATER


Steve

8
Changfa Engines / Re: Weichai 1115, 25hp Changfa-type
« on: April 23, 2007, 10:45:06 PM »
Terry, Thanks for the schemes, You are making the asumption that I am using the lower schematic, which is not true, I am feeding your schematic ( the top one)  with the 240v to the panel and have the panel grounded, and the primary generator grounded creating the 125 V circuits..

You do realize that the 10 HP 230V motor doesn't require a "ground" to run, just a  couple of 125V legs 180 degrees out of phase..

That is the way it is wired up as a generator also, 

No problem.

9
Changfa Engines / Re: Weichai 1115, 25hp Changfa-type
« on: April 21, 2007, 04:02:04 PM »
I forgot to mention that the voltage in the panel is 126 from each leg to ground..

10
Changfa Engines / Re: Weichai 1115, 25hp Changfa-type
« on: April 21, 2007, 03:57:22 PM »
The motor has only 2 leads coming out , no ground at all.   It is wired into the bus via a 40 amp dual braker (2-40)  Each leg measures exactly the same as it is producing only 250V.  I wont be able to isolate it for any wattage checks as it is excited by the house grid.  I do have an electric meter I can put on it, It looks like a regular one on a power pole and see what the current flow running trough it is over time.. will that give a reading??

Steve

11
Other Slow Speed Diesels / Re: Changfa type engines, which manufacture???
« on: April 20, 2007, 09:26:42 PM »
We have a local dealer here in Mississippi, that carries the Jiang Ling (Changfa clone). When I was kicking tires to purchase my 1125,  he bad-mouthed the WeiChai clones, (imagine that) LOL.

Mine is finally running satisfactorily but only after losing the radiator, fuel tank, and a  starter,  I have about 400 hrs on it ,

 Steve

12
Changfa Engines / Re: Weichai 1115, 25hp Changfa-type
« on: April 20, 2007, 09:25:49 PM »


This is from the Metro 6/1 mentioned in the post above. 33.1A x 253V =8374.3 watts Hz =59.9
Just a touch of grey smoke.  Has been under this load for about 2 hours.


Steve

13
Changfa Engines / Re: Weichai 1115, 25hp Changfa-type
« on: April 20, 2007, 06:12:51 PM »
It is just as you see in the pictures,, the only real difference is that I am using a Baldor 230 V 10 HP single phase motor instead of a generator at slightly above 1800 RPM with the secondary circuit reversed and the starting caps taken off line.   It is excited by either an invertor when running alone or by the ST15 powered by the changfa clone.

The label on the motor says it is rated at 39 amps but I am able to run it up to 32- 33 without any serious heating, here is the link to the motor page on Baldor site. http://www.baldor.com/products/detail.asp?1=1&catalog=L1512T&product=AC+Motors&family=General+Purpose%7Cvw%5FACMotors%5FGeneralPurpose&winding=37WGW577&rating=40C+AMB%2DCONT

The drive system is a Utterpower serpentine belt pulley with a 6v belt, I am running #2 diesel offroad currently.

The muffler is a generic 2" inlet and outlet. Wife will probably do laudry this weekend, (my cue to start up the lister) I will get some shots of amps, voltages etc to post. since I got my camera working.

I havent run a fuel consumption lately , engine now has about 150 hrs on it,  but when Running I fill the built in 2.5 gallon tank and let 'er run for about 7- 8 hrs without worry.. I plan to do some calibrated tests of current vs fuel this weekend.

Steve

14
Changfa Engines / Re: Weichai 1115, 25hp Changfa-type
« on: April 20, 2007, 05:29:07 PM »
Zeke, It is mounted on a frame with rubber isolators, I don't even have the frame bolted down,  It is about 2 ft in off the ground  ( out of flood zone) sitting on some stacked concrete blocks and a pair of 6 x 8 railroad timbers,   I will try to get some pictures uploaded so you can see my setup and also the 6/1 lister which runs in tandem with a 10 hp single phase motor as a generator synced to the ST15.

By the way, I am reading a consistant 27- 29 amps from the Lister 6/1  setup at 250 volts which acccording to my math is about 6750 watts and running with a clear exhaust.  I think the Lister's are grossly underrated. Mine is a Metro brand.





15
Changfa Engines / Re: Weichai 1115, 25hp Changfa-type
« on: April 19, 2007, 07:41:47 PM »
Zeke, the fan is an alternator, puts out about 10 amps,   If your 25 is anything like my 28 you will be abandoning it though as it is part of the engine plate that the radiatior mounts to ,  the radiator on mine self destructed in about 10 hours..

I abandoned the fan when i put on a separate cooling system and use a 110v battery charger t otop off the battery.

Steve

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