Generators and Motors
[Home] - [HELP] - [Forums] - [Library] - [Photo Gallery] - [Groups] - [Classified Ads] - [Subscribe] - [Links] - [Books] - [Sponsors] -

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

Notices

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

Frequently Asked Generator Questions


this thread has 26 replies and has been viewed 79084 times

Reply
 
Thread Tools Display Modes
  #11  
Old 01-05-2009, 09:33:43 AM
K D Redd K D Redd is offline
In Memory Of
 
Join Date: Nov 2004
Location: Southwest Missouri
Posts: 5,348
Thanks: 166
Thanked 1,197 Times in 1,058 Posts
Default Re: Frequently Asked Generator Questions

Jim,

My Uncle has about a 30 KW PTO generator that is a stationary field. Power comes from the rotor.

Kent
Reply With Quote
Sponsored Links
  #12  
Old 01-05-2009, 10:16:22 PM
J.B. Castagnos J.B. Castagnos is offline
Registered-III
 
Join Date: Nov 2004
Location: South Louisiana USA
Posts: 2,508
Thanks: 834
Thanked 3,291 Times in 1,027 Posts
Default Re: Frequently Asked Generator Questions

In the automotive industry rotor and stator are usually used to describe the parts of an alternator, stator comes from stationary, it produces the output current. Rotor is the rotating field, it has slip rings to send power in to produce the magnetic field. On a generator, the rotating part was called the armature, it produced the current which was picked up through the brushes on the commutator, the stationary windings were called the field coils, they produced the magnetic field.
Reply With Quote
  #13  
Old 01-30-2010, 03:02:34 PM
Jim Rankin Jim Rankin is offline
Registered-III
 
Join Date: Nov 2004
Location: Faunsdale, Alabama USA
Posts: 4,436
Thanks: 71
Thanked 1,185 Times in 967 Posts
Default Starting aids for Diesels

As you all know, a diesel engine needs compression, air, and fuel to run, the problem is it can take a bit of ingenuity to get all 3 together at the right time. Assuming the engine is operable, it just won't start.........

Fuel........Usually we can ensure there is air, figure out how to spin it fast and still have trouble with getting fuel into it. Of course first thing is to ensure there is fuel and bleed out all air from the fuel system starting at the filters and ending up with the injectors. This can be hard to do unless there is a hand pump or electric primer so you don't burn up a starter cranking the engine over or run down the battery.

One thing that can help get one to prime itself up is to put a rag or paper towel soaked in gasoline into the air breather so it can't be sucked into the engine and crank the thing over. It should start up and run for a second. Much more effective than just cranking one over with the starter. This works better than starting fluid which tends just to lock up an engine that isn't injecting any fuel.

Another possiblility if you can get it into the intake manifold (bypassing the air filter) while you are cranking the engine is WD40. Penetrating oils that come out in a stream don't work for this. You want the mist of petroleum distillate which is the main ingredient of WD40. The sprayer is the governor in this situation, you control the rpm!

Once you get fuel up to the injectors, tighten the injector lines again and crank it over. You should at least get white smoke out the exhaust and if it won't fire off (black smoke)then you need more heat.

Compression of air => HEAT
Heat comes from compression (need plenty of air, good mechanical performance of the engine cylinder(s) and plenty of cranking speed). If that's not enough, supplemental heat can be a hair dryer stuck into the intake manifold, a propane torch pointed down the intake, electric glow plugs or air heaters etc or heating the engine itself either through coolant heaters, oil heaters etc.

Starting fluids with ether can be used here, (cautiously!) as a substitute or supplement for the available heat, but don't mix with intake air heater grids, only cautiously with glow plugs and never around open flames or other sources of ignition! Starting fluids should only be used when the engine is turning over well, making white smoke (unburned fuel), but just won't fire off.

One last thing, exhaust flow can be compromized and prevent proper air intake, so a coked up engine could cause a hard starting or low power condition.
Reply With Quote
  #14  
Old 04-13-2010, 08:34:56 AM
K D Redd K D Redd is offline
In Memory Of
 
Join Date: Nov 2004
Location: Southwest Missouri
Posts: 5,348
Thanks: 166
Thanked 1,197 Times in 1,058 Posts
Default Re: Frequently Asked Generator Questions

I just notice something missing in this section conserning MILITARY GENERATORS!

TO ANYONE LOOKING AT A MILITARY GENERATOR, IF IT HAS A FREQUENCY OF 400 HZ, THERE IS NO WAY IT CAN BE COVERTED TO 60 HZ. Consider it a source of engine parts for a 60 HZ military generator.

Kent
Reply With Quote
  #15  
Old 05-11-2010, 07:55:26 AM
armandh armandh is offline
Sponsor
 
Join Date: Aug 2006
Location: Suburban St. Louis, Missouri
Posts: 2,995
Thanks: 260
Thanked 793 Times in 617 Posts
Default Re: Notes on Transfer Switching of Generators

for clarity below should read

Where you need a permanent backup system... a manual or automatic transfer system is also needed. This often involves a new utility company entrance with a bonded disconnect, also isolating the neutral buss in the main [now sub] panel to achieve proper bonding. a licensed electrician will likely be needed.

Edit: change made to original post. -- Harry


Quote:
Originally Posted by armandh View Post
FYI re transfer

Where backup power is required by law... a permanent system with automatic transfer is needed, get it professionally installed

Where you need a permanent backup system... a manual or automatic transfer system is also needed. This often involves a new utility company entrance with disconnect, and isolating the neutral buss in the main panel to achieve proper bonding. a licensed electrician will likely be needed.

Connecting a temporary or portable generator to your house wiring requires a means of preventing inadvertent connection of the mains with the generator.

all require proper overload protection.

http://www.iaei.org/subscriber/magazine/99_f/manche.htm
Reply With Quote
  #16  
Old 06-08-2010, 12:25:28 AM
wassbiplane wassbiplane is offline
Registered-I
 
Join Date: May 2010
Location: Cyril, Oklahoma USA
Posts: 18
Thanks: 0
Thanked 1 Time in 1 Post
Default Re: Frequently Asked Generator Questions

What happened to my question & 1 reply ??? wassbiplane

It went here.... http://www.smokstak.com/forum/showthread.php?t=76404

Last edited by BTPost; 06-08-2010 at 01:57:31 AM. Reason: Moved to the appropriate Forum
Reply With Quote
  #17  
Old 06-08-2010, 01:54:22 AM
BTPost's Avatar
BTPost BTPost is offline
Moderator
 
Join Date: Jan 2005
Location: Excursion Inlet, Alaska USA 99850-0090
Posts: 4,818
Thanks: 552
Thanked 1,829 Times in 1,195 Posts
Images: 1
Talking Re: Frequently Asked Generator Questions

FAQ's are for ANSWERS, to "Frequently Asked Questions" not for Questions. Look for you Question Thread in the appropriate Forum.
__________________
Bruce in alaska
Reply With Quote
  #18  
Old 07-04-2010, 04:42:12 PM
rtfm rtfm is offline
Registered
 
Join Date: Jul 2010
Location: Inside the Beltway
Posts: 6
Thanks: 1
Thanked 0 Times in 0 Posts
Default Re: Frequently Asked Generator Questions

Quote:
Originally Posted by K D Redd View Post
IF IT HAS A FREQUENCY OF 400 HZ, THERE IS NO WAY IT CAN BE CONVERTED TO 60 HZ.

Kent
One exception; a Variable Frequency Drive [VFD] by design is a AC->DC->AC converter. It should run from 400 hz with no issue, and make 60 [or whatever you want] Hertz out. With the price of VFD's falling, this may be useful to some folks.
Reply With Quote
  #19  
Old 07-05-2010, 02:19:03 AM
BTPost's Avatar
BTPost BTPost is offline
Moderator
 
Join Date: Jan 2005
Location: Excursion Inlet, Alaska USA 99850-0090
Posts: 4,818
Thanks: 552
Thanked 1,829 Times in 1,195 Posts
Images: 1
Talking Re: Frequently Asked Generator Questions

Quote:
Originally Posted by rtfm View Post
One exception; a Variable Frequency Drive [VFD] by design is a AC->DC->AC converter. It should run from 400 hz with no issue, and make 60 [or whatever you want] Hertz out. With the price of VFD's falling, this may be useful to some folks.
That would depend on the Input Circuitry in the VFD. Some use Input Filtering BEFORE the Rectifiers, and these types would not like 400 Hz Ac Input at all.
__________________
Bruce in alaska
Reply With Quote
  #20  
Old 09-02-2010, 05:56:47 AM
armandh armandh is offline
Sponsor
 
Join Date: Aug 2006
Location: Suburban St. Louis, Missouri
Posts: 2,995
Thanks: 260
Thanked 793 Times in 617 Posts
Default Re: Frequently Asked Generator Questions

lets just say there is no simple reconnection for 60 HZ
Reply With Quote
Reply

Bookmarks


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
FREQUENTLY ASKED QUESTIONS on Onan Generators Harry Onan Generators 11 11-04-2010 01:51:34 AM
15 kw GE DC Generator Questions Rick McKay Generators & Electric Motors General Discussion 0 04-17-2007 10:08:27 PM
I dont remember who asked but...heres an answer Mac Leod Antique Gas Engine Discussion 7 09-25-2005 07:47:37 PM
What I asked Santa for..... David Sundry Antique Engine Archives 2 12-25-2004 12:44:45 AM
I asked a smart guy about engines running too slow Mark Thompson Antique Engine Archives 5 01-05-2004 09:50:08 PM


Use "Ctrl" mouse wheel to change screen size.
All times are GMT -4. The time now is 07:55:44 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 - 2016 by Harry Matthews P.O. Box 5612 - Sarasota, FL 34277