Quick question in relation to a soft start circuit on the 70V system.

In all the various circuits I've seen, there is some form of resistance inline before the transformer which, after a very short delay, is then bypassed. Many circuits also then isolate the resistors, though there seems to be various thoughts on whether this is really necessary.

My question relates to using a DPDT relay for this: when the relay activates, the first pole (NO) is closed, creating the bypass. The second pole (NC) which leads to the resistors is opened, taking them out of the circuit. In this arrangement, there is presumably the possibility that the second pole could open before the first pole has closed, so there is no power flowing at all for a very brief time. If this is correct, is this likely to have a significant impact given the timescales involved? Is any switching delay likely to be long enough to negate the effect of the soft start circuit?

If not practical then fair enough, but it would be neater to use one relay to do both functions!