[Amps] Breakdown voltages

[Larry Benko]

Has anyone seen a study or have any knowledge of the relationship 
between the RF breakdown voltage and the 60Hz breakdown or DC breakdown 
voltage?

I would like to test several parts such as switches, relays, vacuum 
capacitors, and air variable capacitors in the HF range.  Hi-pot testers 
are always (nearly always) DC or 50/60Hz testers.  I would hope to be 
able to do a 60Hz test and then modify the answer by some percentage 
(perhaps based on frequency).

Thanks for any ideas.

73, Larry, W0QE