Generators and Electric Motors
[Home] - [HELP] - [Forums] - [Groups] - [Classified Ads] - [Subscribe] - [Books] - [Sponsors] -

Go Back   SmokStak > SmokStak® Vintage Electrical Equipment > Generators & Electric Motors General Discussion
Forgot Password? Join Us!


Generators & Electric Motors General Discussion Antique Generators and Old Electric Motors: Questions and answers about restoring and showing old power generation systems.

Generators & Electric Motors General Discussion

Kato generator

this thread has 1 replies and has been viewed 1137 times

Thread Tools Display Modes
Old 08-01-2014, 01:23:33 PM
Posts: n/a
Default Kato generator

I have a kato generator which has been down for almost 8 months and when it was started, it would not produce any voltage, I have check the AVR which is ok as i swap it with next generator which is running OK, I have check and control insulation resistance for all winding OK, I have check resistance of exciter stator and armature OK, I have control all rectifying diode OK, i have flash the exciter field with 12vdc battery with AVR disconnected, and i had 55VAC between Lines which was good.after running for 3 minutes I shut down the generator and connect back my field leads to my AVR, then start the generator but the voltage had disappear, since the I have try flashing again but can only have 2,7VAC between lines. there are 2 leads per phase coming out of the alternator + 2 neutral leads so altogether 8 leads on main circuit breaker, i have disconnected all these wires and start testing individual set of winding but i am having continuity to all these cable even when i separate the neutral, is this normal. any help i appreciate .
Reply With Quote
Sponsored Links
Old 08-02-2014, 03:19:22 AM
dkamp dkamp is offline
eMail NOT Working
Join Date: Oct 2007
Location: LeClaire, Iowa, USA
Posts: 1,672
Thanks: 34
Thanked 882 Times in 580 Posts
Default Re: Kato generator

Hi Dewings!

Sounds like the alternator has lost it's 'residual magnetism'. Since it responded to flashing the field, that means you have a good generator, just need enough magnetism built back into the iron chassis to make it self-excite.

You can try flashing the field again, or you can 'cheat' by just placing a large (strong) magnet on the exciter, and moving it around a little bit until the generator starts to build power. Connect a light bulb to the generator output, and with engine running, move the magnet around until the light bulb starts to glow. Let the generator work for a little while...eventually the lightbulb will build up to full bright. After you've reached full bright, connect in a larger resistive load... like an electric heater... turn it on at low-power, and let the generator work... eventually move to higher power... and let it work. After the generator has pushed a strong resistive load for a half hour or so, remove the magnet, and let the generator continue to work for another half hour. After that, it should self-excite and run fine.
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

F o r u m Jump

Similar Threads Chosen at Random
Thread Thread Starter F o r u m Replies Last Post
Need a source for Kato generator information BGunn Generators & Electric Motors General Discussion 5 11-07-2009 08:27:31 PM
Perkins Diesel with Kato Generator Don Smith Generators & Electric Motors General Discussion 3 02-03-2008 11:17:31 PM
KATO gen head ~Wittes-End~ Generators & Electric Motors General Discussion 9 03-29-2007 08:16:25 PM
Kato Enginering Generator mglk31 Generators & Electric Motors General Discussion 7 08-09-2005 10:55:09 PM
av2/kato problems - new guy Jonathan Hunter Generators & Electric Motors General Discussion 4 03-25-2005 10:00:22 AM

Use "Ctrl" mouse wheel to change screen size.
All times are GMT -4. The time now is 12:11:13 PM.

Smokstak and Enginads site search!

All use is subject to our TERMS OF SERVICE
SMOKSTAK® is a Registered Trade Mark - A Community of Antique Engine Enthusiasts
Copyright © 2000 - 2019 by Harry Matthews P.O. Box 5612 - Sarasota, FL 34277