ElectricalOM Forum

ElectricalOM Support => ElectricalOM for Advanced Users => Topic started by: AndyZ on 21 November 2023, 15:24

Title: RCD Protection
Post by: AndyZ on 21 November 2023, 15:24

Hi, recently, during my design, I noticed when selecting protection devices, there is a tick box for the 'additional RCD/Earth fault protection'; and another tick box for 'RCD Devices are only used for additional protection'. I wonder in what condition those box should be ticked? Thanks.

Title: Re: RCD Protection
Post by: Mert on 23 November 2023, 16:12

Hi AndyZ,

If that box is not checked EOM will consider the overcurrent protection device as the main device for the earth fault calculations and checks. If it is checked, the RCD data will be used for earth fault calculations instead. This is only relevant to TN systems.

Hope that helps.