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Panel Schedules - Improvements

Panel Schedules - Improvements

When working on healthcare projects, we frequently use and show panel schedules for Isolated Power Panelboards, but we do this in Excel. There should be a template or a simple way to create a template/panel schedule for Isolate Power Panelboards. They need to graphically look like an isolated power panel and load properly.

5 Comments
Martin__Schmid
Autodesk

hi @JusticeHarris - thanks for the suggestion... what makes a isolated panel / panel schedule different from what you are able to accomplish in Revit?

JusticeHarris
Explorer

An isolated power panel has an integral isolation transformer and has a primary circuit breaker along with a 2-pole secondary circuit breaker. In our panel schedules we specify both the Primary Voltage and Secondary Voltage of the panel and each breaker is shown as a 2-pole breaker and the load is distributed evenly between the two lines (L1 and L2).

 

I have attached a photo of an isolated power panel / panel schedule as well as a typical schedule I use. 

 

Isolated Power Panel.PNGPanel.PNG

Martin__Schmid
Autodesk

Thanks for the update... so, essentially you have all within one enclosure:

 

 

  1. 2-pole primary circuit breaker
  2. Transformer
  3. 2-pole secondary circuit breaker (?)
  4. bus & branch circuit breakers

 

And, for the transformer you have (referring to linked image)

  1. 480v Vp (line-to-line)
  2. 120v Vtotal (Line 1 to Line 2)
  3. 60V Va and Vb (you're not using a neutral, I presume, but rather just have a ground?)

 

You mentioned that you have a secondary breaker... but it isn't clear from your schedule where this is shown.. am I mis-understanding something?

 

 

JusticeHarris
Explorer

The image is appropriate. The secondary line-to-line voltage is 120V, no neutral is present.

 

The secondary main breaker is not currently scheduled in our schedules, just the primary main. It's not really necessary to include the manufacturer's size and include both primary and secondary main breakers on the transformer size, but we like to for information/specification purposes.

fabiosato
Mentor
This solution is also great for equipments that are fed from AC voltage and the loads are all DC voltage, like emergency lighting supply through batteries.

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