Residual Current Detection webinar - How adapting Vigi on 3-poles Compact NSX when distributed neutral?

Esperanto · ‎2020-03-26

Hello,

I couldn't understand from webinar what do with molded case breakers, in case of distributed neutral (4 wires) installation.

Should we add a 4 poles Vigi with adaptor on the triple pole Compact NSX?

Thanks for giving clarity on this specific case.

Best

Espe

MathieuGuillot · ‎2020-03-31

Hello,

In 3 Phases + Neutral system the RCD shall measure the current of 3 phases and Neutral. If in this type of system a 3 poles ComPact NSX is used and RCD funciton is expected, three options are possible :

Replace the 3P ComPact NSX by a 4P ComPact NSX with Micrologic 4.x or 7.x
Use a ComPact NSX 3P + a Vigi Add on 4P with a "Vigi 4P/3P adaptor (Reference : LV429214 for NSX 100-250 frame or LV432457 for NSX400-630 frame)
Use a standalone relay VigicomPact RH* + toroid with a 3P ComPact NSX without Vigi function.

Note : Today there is no equivalent of "Vigi 4P/3P adpator" for Micrologic Vigi 4.x / 7.x. If you consider this is a concern don't hesistate to provide feedback.

Regards

See Answer In Context

MathieuGuillot · ‎2020-03-31

Hello,

In 3 Phases + Neutral system the RCD shall measure the current of 3 phases and Neutral. If in this type of system a 3 poles ComPact NSX is used and RCD funciton is expected, three options are possible :

Replace the 3P ComPact NSX by a 4P ComPact NSX with Micrologic 4.x or 7.x
Use a ComPact NSX 3P + a Vigi Add on 4P with a "Vigi 4P/3P adaptor (Reference : LV429214 for NSX 100-250 frame or LV432457 for NSX400-630 frame)
Use a standalone relay VigicomPact RH* + toroid with a 3P ComPact NSX without Vigi function.

Note : Today there is no equivalent of "Vigi 4P/3P adpator" for Micrologic Vigi 4.x / 7.x. If you consider this is a concern don't hesistate to provide feedback.

Regards

Esperanto · ‎2020-04-06

Thanks Mathieu,

At this point I can implement at least one option among 3 ones in different cases I met up to now.

Best

Espe