EA-PSM allows creating database of solid-state trip units, created model can be used for the protection system development. Necessary parameters of the trip unit could be determined from the manufacturer provided catalogs or from the protection unit nameplate.
To create a breaker model, in the “Nameplate” tab the user should enter data such as manufacturer, series, and model.
In the “Nominal values” tab the user should define breaker nominal current “In” values. Data can be entered as discrete numbers (i.e. “7.5 9 10.5 12 13.5 15”), where each number represents valid current setting for the trip unit, or as currents array with a constant step (i.e.” min=7.5, max =15, step = 1.5”). For nominal current values, dependency usually should be selected to “None”.
Depending on the breaker capabilities in the “LT” (long time pickup), “ST” (short time pickup), “I” (instantaneous pickup), “G” (“grounding protection”) each functionality current and time settings should be defined in the same manner.
