Brown out? Is that not what happens within an hour of eating off the "roach coach"? [Linked Image]
Sorry, had to say it!

Brown out Is a reduction in voltage, usually by the PoCo during an extremely high demand in order to reduce the load.

OR:

It could also include ( I think don't quote me) when the demand on the PoCo is so high the supplied voltage actually starts to drop close to or past the allowed minimum voltage level required to be supplied by the PoCo.

A.D