[IEC 61439 for LV equipment April 16th 2020 webinar] - Short-circuit

[PascalL]

Question from Eduard

Regarding Polipact unit for NSX CBs. There is Icc mentioned in Prisma catalog 85kA - does it mean we can connect this unit to the main busbars with Icw 85kA?

[PascalL · Accepted solution]

Hello,

Interesting question,

Yes you can connect your polypact directly to the busbar having an ICW 85KA.

The performance of the busbar is ICW 85KA in relation with the ICW of the incomer as a MTZ.

The polypact connected to this busbar will be in accordance with this performance annonced and tested to Icc 85KA beaking capacity of the breakers installed on polypact.

Pascal Lepretre

Standardization officer - Edison Expert.