Previous in Forum: Storing Battery Over Winter   Next in Forum: Specification of softstarter for 335hp miil motor
Close
Close
Close
12 comments
Rate Comments: Nested
Participant

Join Date: Aug 2012
Posts: 3

Three Phase Synchronous Generator

10/23/2013 9:52 AM

What could b the cause of abnormal sound coming from a three phase synchronous generator when voltage is building up during starting up?

Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33392
Good Answers: 1817
#1

Re: Three Phase Synchronous Generator

10/23/2013 10:18 AM

Mechanic still working in back.....? Maybe bearings ...? cat sleeping on warm motor....?

https://www.youtube.com/watch?v=pwvS8_H5rKs

__________________
All living things seek to control their own destiny....this is the purpose of life
Register to Reply
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#5
In reply to #1

Re: Three Phase Synchronous Generator

10/23/2013 4:49 PM

Great video!

__________________
"Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#2

Re: Three Phase Synchronous Generator

10/23/2013 10:54 AM
  • Budgie caught in the works
  • Someone left a spanner inside it when it was boxed-up
  • Mounting bolts loose/broken/missing
  • Too little sound insulation in the building for some reason
  • It's flooded with water
  • Wrong fuel
  • It has just run out of fuel
  • Landslide dropping onto it
  • Aircraft crashing into it
  • Terrorist caught inside it
  • Etc., etc.
__________________
"Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply Score 1 for Good Answer
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#3

Re: Three Phase Synchronous Generator

10/23/2013 11:58 AM
  • Bent blade on the cooling fan striking the cowling
  • Loose cable connection onto the terminals
  • Loose materials underneath it
  • Water in the fuel
  • Rotor shaft snapped off
  • Blown head gasket
  • Coolant pump knackered
  • Electrician still connected to the terminals
  • Bent security cover with rattling padlock
  • It isn't level in accordance with the set-up detail in the User Manual
  • Mechanical overload
  • Electrical overload
  • It doesn't know the tune
  • Etc.
__________________
"Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply Score 1 for Good Answer
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#4

Re: Three Phase Synchronous Generator

10/23/2013 12:00 PM
  • Blown silencer/muffler
  • Rattling control panel

Is there a prize for getting the right answer?

__________________
"Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply
Power-User
United States - Member - NE, USA Hobbies - Target Shooting - New Member Engineering Fields - Aerospace Engineering - Engineering Fields - Electromechanical Engineering - New Member

Join Date: Jul 2007
Location: USA
Posts: 199
Good Answers: 6
#10
In reply to #4

Re: Three Phase Synchronous Generator

10/24/2013 10:43 AM
  • Electrician still connected to the terminals I'd call THAT an abnormal sound!
Register to Reply Off Topic (Score 5)
Guru
United Kingdom - Member - New Member

Join Date: Aug 2010
Location: Resting under the Major Oak
Posts: 4347
Good Answers: 181
#6

Re: Three Phase Synchronous Generator

10/24/2013 12:28 AM

Quite simple, something's wrong.

If you ask a stupid question you get a stupid answer!

__________________
The reports of my death are greatly exaggerated.
Register to Reply
Power-User
Engineering Fields - Electrical Engineering - New Member Engineering Fields - Power Engineering - New Member

Join Date: Mar 2012
Location: the sandbox
Posts: 341
Good Answers: 6
#7

Re: Three Phase Synchronous Generator

10/24/2013 1:56 AM

is it a funny noise coming from the left side below that red panel?

__________________
BSEE but always learning
Register to Reply
Guru
Popular Science - Weaponology - New Member Fans of Old Computers - PDP 11 - New Member Technical Fields - Architecture - New Member Hobbies - HAM Radio - New Member

Join Date: Oct 2009
Location: Maine, USA
Posts: 2168
Good Answers: 71
#8

Re: Three Phase Synchronous Generator

10/24/2013 8:52 AM

Did you push the BLUE button??? You should NEVER push the BLUE button!

__________________
Tom - "Hoping my ship will come in before the dock rots!"
Register to Reply
Guru
Hobbies - DIY Welding - Wannabeabettawelda

Join Date: May 2007
Location: Annapolis, Maryland
Posts: 7940
Good Answers: 458
#9
In reply to #8

Re: Three Phase Synchronous Generator

10/24/2013 10:41 AM

But blue is my favorite colour, not yellow . . . . A - a - a - a - a - a - r - g - h

Register to Reply Off Topic (Score 5)
Guru
Popular Science - Weaponology - New Member Safety - ESD - New Member Hobbies - Fishing - New Member

Join Date: Sep 2006
Location: Near Frankfurt am Main, Germany. 50.390866N, 8.884827E
Posts: 17996
Good Answers: 200
#11

Re: Three Phase Synchronous Generator

10/24/2013 1:33 PM

I vote this as being the dumbest question winner for 2013.

__________________
"What others say about you reveals more about them, than it does you." Anon.
Register to Reply
Power-User
Engineering Fields - Electrical Engineering - New Member Engineering Fields - Power Engineering - New Member

Join Date: Mar 2012
Location: the sandbox
Posts: 341
Good Answers: 6
#12

Re: Three Phase Synchronous Generator

10/25/2013 2:51 AM

its some imbalanced thing or a bad bearing. and the solution is to fix bad bearings or balance what is not.

__________________
BSEE but always learning
Register to Reply
Register to Reply 12 comments

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
Copy to Clipboard

Users who posted comments:

1capybara (2); Andy Germany (1); Brave Sir Robin (1); JCase (1); PWSlack (4); SolarEagle (1); Tom_Consulting (1); TonyS (1)

Previous in Forum: Storing Battery Over Winter   Next in Forum: Specification of softstarter for 335hp miil motor

Advertisement