Transformer fault because of full load energize
Transformer fault because of full load energize
(OP)
Hi.
Is there any paper or study describe relationship between operation mode and failure rate of a power transformer. example if the transformer often energize on load (load side CB close) it will raise the probability of transformer fault due to higher inrush current if compare to energizing transformer off load ( load side CB open)
thank you for the answer
Is there any paper or study describe relationship between operation mode and failure rate of a power transformer. example if the transformer often energize on load (load side CB close) it will raise the probability of transformer fault due to higher inrush current if compare to energizing transformer off load ( load side CB open)
thank you for the answer





RE: Transformer fault because of full load energize
What types of loads are connected to the transformer? Size of transformer? Transformer protection used?
Why do you energize the transformer directly without disconnecting the load first?
The transformer itself exhibits inrush current during initial energizing which is full of harmonics plus the inrush current drawn by the connected load specially if you have electric motors.
Yes the probability of failure will be higher.
RE: Transformer fault because of full load energize
My take is that you get more inrush when secondary is not connected.
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Transformer fault because of full load energize
RE: Transformer fault because of full load energize
"Cold load pickup" is often a problem in distribution applications but it is handled by specific application of protective relays.
old field guy