leaking transformer
leaking transformer
(OP)
we have 2-MVA power transformer 4160/480V. 7-325mm2 cables per phase were connected on its secondary bushings. The cables' connections applies some pressures on the bushings causing transformer oil to leak. I am planning to intall braided copper conductor on its secondary bushings to relieved pressures. But until my flexible cables arrived(installed) I am still using my transformer.
Is it OK to still operate the leaking unit?
Is it OK to still operate the leaking unit?






RE: leaking transformer
How major is the leak? You have to be careful that the oil level does not drop below the top of the coils or bushing connections.
Does the transformer cycle in temperature? What can happen is that moisture can be drawn into the transformer since it is not sealed anymore.
I'm not sure what you mean by braided copper conductor to relieve pressure. I would look at installing strain relief (Kelloms Grips) and attach them to the top of the connection box. They make split ones so you don't have to disconnect the cables to install.
RE: leaking transformer
You have to make sure it doesn't fall below the level of the radiators either, or it may overheat.
RE: leaking transformer
The leak is something about 2 to 3 drops per minute?! not very sure though...
Braided copper conductor is like a flexible conductor composed of smaller copper conducters woven together (braided). In this manner the connection between the transformer terminals and cables (braided conductor) will be flexible.
RE: leaking transformer
http://www.hubbell-wiring.com/Kellems.asp
RE: leaking transformer
Support your cables to relieve the strain on the bushings, and carefully torque the bolts on the bushings.
RE: leaking transformer
Presently the level is still OK... we're just allowing oil to leak coz if we will try to tighten the bushings we will spill oil also in the process.
Thank you guys...
Happy Holidays
RE: leaking transformer
K2ofKeyLargo
RE: leaking transformer
RE: leaking transformer