I am in need of some help with regards to a relay. In the attached drawing, I am not sure of all the requirements of the the two relays between the power supply and the transformer. Must these two specific relays have a dielectric strength of 4800VAC? The power source is not in parallel with the HiPot, but I just want to make sure that I am taking the correct precautions. I do not want my built circuit to fail or possibly catch on fire. Also of note is that the HiPot would only be supplying 4800VAC for about half of a second. Any feedback would be greatly appreciated.