How to Setup the IOC Test with the Time Delay on Doble F2253

First, it's a "macro," not "micro."

Next, if you are testing an instantaneous overcurrent function, why are you looking for time delay? The key test is for the pickup point, for which I would use a PRAMPI (pulsed current ramp). I suppose that if you want to know how fast the relay operates after you apply a current high enough to trip on instantaneous, you could use the PRAMPI to find the pickup, then do a separate TIMEI test with a current value just a bit higher to determine actual operation time.

Here's a link I found to the ProTest user manual:

http://www.electricalmanuals.net/files/TEST-EQUIPMENT/DOBLE/72A-1585-Rev-C.pdf