Lincoln Street Substation Transformer Explosion Burbank, CA - 04/10/2020

[mbrooke]

Transformer explosion and fire:

Looks like there was sustained arcing on the secondary before the explosion:

I'm guessing a short circuit occurred on the 12kv (or 16kv) side with relaying failing to catch/clear it. The transformer remained profoundly overloaded, overheating to the point the oil inside it ignited.

I don't take credit for these picture but to give you an idea that power transformers typically contain anywhere between 7,000 to very well over 25,000 gallons of oil.

https://imgur.com/a/KzJVNKp

https://imgur.com/1wdbAnf

Can I make the claim that my practice of 200E fuses on the primary would have prevented all this?

 

[LarryFine]

"Where's the kaboom? There's supposed to be an Earth-shattering kaboom!"

Can I make the claim that my practice of 200E fuses on the primary would have prevented all this?

As long a you don't say AFCIs would have.

 

[mbrooke]

"Where's the kaboom? There's supposed to be an Earth-shattering kaboom!"


As long a you don't say AFCIs would have.

In all seriousness you don't need AFCI when you have differential protection.

 

[romex jockey]

Is this a copper vs. cat5e relay dispute?

~RJ~

 

[mbrooke]

Is this a copper vs. cat5e relay dispute?

~RJ~

I'm wondering that as well.

 

[mbrooke]

Is this a copper vs. cat5e relay dispute?

~RJ~

Here is an up close video RJ if interested: