'm trying to discriminate between an outgoing ACB on a transformer (2000A) and an incoming device on a panel board (1600A) no mater which device I choose whether it be an ABB Schneider or generic, I cannot get the discrimination calc to pass. I've adjusted the settings on the devices, none of curves are crossing and therefore I don't know why it isn't discriminating. see image below
Hi Patrick,
It is very difficult to give a certain explanation for this without further knowledge of the project in question - could you please reply with a screenshot of the way data, with discrimination details listed?
Shane Regan | Principle Building Performance Support EngineerHevacomp to OpenBuildings - A complete guide for every user | Bentley Communities
Hi Shane, thanks for the reply. please see below screenshots: so it says fail type 2, which says upstream device disconnect quicker than downstream device, but the time curves don't meet on the discrimination graph..
It would appear that this is due to the connection time of 0.01s resulting in the discrimination at this point:
However it is difficult for us to be certain without seeing the project - if you wish us to double-check this please upload project folder to:
https://bentley.sharefile.com/r-rc544b0c7ab54f818