Over Heating Transformer

143 · January 26th, 2009, 11:43 AM

looks like it narrows down to an overloaded transformer.

TheSuper · January 26th, 2009, 11:55 AM

Quote:

Originally Posted by 143

looks like it narrows down to an overloaded transformer.

Are you saying that because of all the conditions he has mentioned? I know Sparky was going to check out the transformer today. Dont know what he found.

sparky · January 26th, 2009, 05:43 PM

I was by there today and set up the meter............Looks like an
unbalance load............................S

Little Jonny · January 26th, 2009, 05:45 PM

Quote:

Originally Posted by sparky

I was by there today and set up the meter............Looks like an
unbalance load............................S

How do you fix somethingy like that?

sparky · January 26th, 2009, 06:22 PM

Quote:

Originally Posted by Little Jonny

How do you fix somethingy like that?

You shift loads between phase's ,until they are closer to being
the same....................................S

iOperate · January 26th, 2009, 07:32 PM

Thanks for dropping by Sparky and at such short notice. Now, was that hot or WAS THAT HOT?

143 · January 26th, 2009, 08:04 PM

Hey Sparky, you said that it was an unbalanced load problem. What were your readings compared to the wire size?

sparky · January 26th, 2009, 08:54 PM

Quote:

Originally Posted by 143

Hey Sparky, you said that it was an unbalanced load problem. What were your readings compared to the wire size?

A 45kva is good for 125amps max at 208 volts , you are only allowed
to load it to 80% or 100 amps . When I check the phase's were
70, 45,90.........this was first thing in the morning.

I'm sure when I check the meter it show higher readings later in the
day.

143 · January 26th, 2009, 10:42 PM

what actually sparked my curiosity was that somewhere along the line someone mentioned that not one but all the lines felt hot at one point........are you saying that all the phases were drawing above 100A at one point?

TheSuper · January 27th, 2009, 06:13 AM

Wow, this is the hottest thread just like the transformer.

sparky · January 27th, 2009, 04:52 PM

Quote:

Originally Posted by 143

what actually sparked my curiosity was that somewhere along the line someone mentioned that not one but all the lines felt hot at one point........are you saying that all the phases were drawing above 100A at one point?

For sure , I was there early in the morning as the day goes on and more
use is put on the transformer , the hotter it will get................S

sparky · February 7th, 2009, 04:14 PM

Well after a week of monitoring the transformer , I've found that it is
not only unbalanced but over loaded. I've recomended that he ungrade
to a 75KVA as soon as he can get approval.

Sparky

143 · February 7th, 2009, 10:12 PM

good job Sparky.

sparky · February 17th, 2009, 09:35 PM

Quote:

Originally Posted by 143

good job Sparky.

Thanks..........

January 26th, 2009, 11:43 AM	#41
143 Member Join Date: Jan 2009 Posts: 43	looks like it narrows down to an overloaded transformer.

January 26th, 2009, 05:43 PM	#43
sparky Senior Member Join Date: Jan 2009 Location: toronto Gender: male Posts: 123	I was by there today and set up the meter............Looks like an unbalance load............................S

January 26th, 2009, 07:32 PM	#46
iOperate Super Moderator Join Date: Jan 2009 Location: 3rd Rock From The Sun Gender: Male Posts: 101	Thanks for dropping by Sparky and at such short notice. Now, was that hot or WAS THAT HOT?

January 26th, 2009, 08:04 PM	#47
143 Member Join Date: Jan 2009 Posts: 43	Hey Sparky, you said that it was an unbalanced load problem. What were your readings compared to the wire size?

January 26th, 2009, 10:42 PM	#49
143 Member Join Date: Jan 2009 Posts: 43	what actually sparked my curiosity was that somewhere along the line someone mentioned that not one but all the lines felt hot at one point........are you saying that all the phases were drawing above 100A at one point?

January 27th, 2009, 06:13 AM	#50
TheSuper Administrator Join Date: Jan 2009 Location: Plano, Texas, Posts: 94	Wow, this is the hottest thread just like the transformer.

February 7th, 2009, 04:14 PM	#52
sparky Senior Member Join Date: Jan 2009 Location: toronto Gender: male Posts: 123	Well after a week of monitoring the transformer , I've found that it is not only unbalanced but over loaded. I've recomended that he ungrade to a 75KVA as soon as he can get approval. Sparky

February 7th, 2009, 10:12 PM	#53
143 Member Join Date: Jan 2009 Posts: 43	good job Sparky.

Over Heating Transformer

Electrical, Mechanical and Control Systems