Is the IEC 60909 standard applicable for short circuit current calculations in UK?

[Alex-SL]

Hi. I would like to get a help from this forum electrical engineers. There is the international standard “IEC 60909” for calculations of symmetrical and asymmetrical short circuit currents.

I need to calculate line-to-earth short circuit (circuit 0.4kV) by the software that uses calculation procedures defined in the IEC 60909. Is the IEC 60909 standard applicable for short circuit current calculations in UK?

 

[Wilko]

Hi Alex, here's a doc from Schneider Electric on fault currents and 60909 that may be worth a read
http://www.studiecd.dk/cahiers_techniques/Calculation_of_short_circuit_currents.pdf

 

[Alex-SL]

Hi Wilko, Thank you for your answer, but I already have this brochure from Schneider Electric, and I have official doc of IEC60909 (edition 2016).

I’ll reformulate my question in another way: is there a regional standard for short circuit current calculations (up to 1kV) in UK? If such standard exist, can I calculate SCC in my street lighting design projects by the international standard IEC 60909? Will such calculations be accepted in UK?

I use the CAD plugin (MeteorCalc – for street lighting designers) and this software calculates SCC by IEC60909 only. For example the Ecodial from Schneider Electric calculates SCC according to CENELEC TR50480.

 

[westward10]

Is this in Estonia or the UK.

 

[Alex-SL]

I am from Estonia, but probably I will design street lighting projects in the UK. But it's not important now.

I'll ask my question more widely. If there is a national or regional standard for electrotechical calculations (for example, for SC currents) in a country, can I use calculation procedures from an international standard for same electrotechical calculations in this country? Which of the standards is primary: regional or international?