Railway 16 2/3 Hz 230 V MCB

[Fredrik_Aandal]

Hi community

I'm not able to find any MCB's with specifications for 16 2/3 Hz. I would assume a magnetic trip correction factor must be applied, but only DC factors are currently specified. 

Anyone who has found any solution to similar topic? 

Thanks, 

[Yarom · Accepted solution]

To start and get you going before someone else comes with a more relevant answer, we have MCCB's (NSX series) that may offer a solution.

Check out page B-54 (88 of the pdf): 

https://download.schneider-electric.com/files?p_enDocType=Catalog&p_File_Name=LVPED221001EN.pdf&p_Do...

Hope it helps.

[Gregoire_Brun]

Hello 

Right @Yarom 

@Fredrik_Aandal, I'm surprise to see a question coming from Norway for this type of device which is generally dedicated for Switzerland and Austria railway... what is your application on your case?

[Fredrik_Aandal]

Thanks, I'm aware of NSX 16 2/3 Hz compatibility. Using a MCCB as a substitute for MCB is a bit overkill though. 

[Fredrik_Aandal]

Norway has 16 2/3 Hz railway just as Switzerland and Austria. And don't forget about Germany. 

[Gregoire_Brun]

@Fredrik_Aandal what is the ratting and short circuit level you need ?

[Fredrik_Aandal]

@Gregoire_Brun 2-pole in the range of In 6 - 10 A B/C trip. char.

Isc levels are quite low as the 15 kV - 230 V transformer is at maximum 15 kVA. "Standard" Icu/Icn will do the job. 

[Gregoire_Brun]

Same ratio of 10 % lower could be apply for MCB I think

[Fredrik_Aandal]

Thanks Gregoire, 

I agree with you that the same factors probably would apply MCBs as well. But before stating this to a customer I will need to get it confirmed by technical support in an email. 

[Gregoire_Brun]

if you want an official declaration, please contact CCC to optain it,Aks them eventualy to contact me to cross data between MCCB and MCB