The transformer is good for 1500 to 2500 VRMS at 0.5 A or more.
I would check to see if these transformers are continuously rated,
I seem to recall they are rated for intermittent use only.

Several years ago, while driving from Kansas City to Manhattan, KS (about
130 miles) I had an interesting QSO most of the way with someone who said
his amplifier was powered by two microwave-oven transformers (two are
used because the high-voltage winding is usually connected to "ground"
internally).

--Myron, W0PBV.
--
Five boxes preserve our freedoms: soap, ballot, witness, jury, and cartridge
PhD EE (retired). "Barbershop" tenor. CDL(PTXS). W0PBV. (785) 539-4448
NRA Life Member and Certified Instructor (Home Firearm Safety, Rifle, Pistol)