PrismaSeT 4000A Bottom Horizontal Busbars?

[Peter_Hall]

Good afternoon everyone,

We are looking at a project for a customer which involves a number of PrismaSeT switchboards. Two of the switchboards need to be rated for 2.5MVA transformers (3500A) and need to be top cable entry. This would mean the main horizontal busbars being located in the bottom of the panel. Is this possible to provide in PrismaSeT? Looking at the catalogue i don't think that this is possible. Can someone please kindly clarify if it is possible or not?

[Carlos_Cabrita · Accepted solution]

Regarding your query, having a horizontal busbar at the bottom of the PrismaSeT P is not an issue. However, it will have to be compartmented to avoid the accidental falling of items directly to the busbar. You can find details on partitioning on page H-5 of our catalogue.

Since you mentioned 3500A, please be also aware of the temperature de-rating factors shown on page I-13 of the catalogue.

Link to the catalogue:

https://download.schneider-electric.com/files?p_Doc_Ref=DESW024EN&p_enDocType=Catalog&p_File_Name=Pr...

[Peter_Hall]

Hi Carlos,

Thank you for taking time to to confirm. That is really helpful.

Best regards,

Peter Hall