Ordering IEC Current Transformers- suppliers?

[tumbleweed1]

Hello All,

I am trying to match a IEC current transformer rated at 15VA, Class 10P10, 400/5A. Has a secondary turns of 80. Wondering if anyone has a supplier in Europe that we can order directly from, as none of the North American suppliers are able to help us out by matching exactly that.

It is for differential protection and we have an excitation curve to match if necessary.

Certainly there must be some supplier in Europe that we could deal with...

 

[ScottyUK]

Howard Butler - Hobut - are one of the best-known manufacturers of CTs in the UK.

http://www.hobut.co.uk/

 

[tumbleweed1]

Thank you sir. I will look into this!

I see you're from the UK? Are these 10P10 the type of classification that are typically used for protection CTs?

 

[scottf]

What kind of CT is it (voltage class, window or wound, etc...)?

Disclaimer, I work for Ritz, but Ritz has a US office that can supply you with US made product to IEC standards in some cases or European-made production.

sales@ritzusa.com

 

[ScottyUK]

tumbleweed,

In the UK a 10P10, 5P20, or whatever is a run-of-the-mill protection CT. A CT for a high impedance diff scheme is usually listed as Class X type with a specified knee point voltage and excitation current. There's nothing radically different about a Class X from a standard protection CT other than its performance characteristics are defined slightly differently. One the apps guys at Hobut would take you through what data you need to provide for them to provide a near-match.

 

[Marmite]

You could also try Instrument Transformers Ltd:-

http://www.itl-uk.com/en/products/current-transformers/

Regards
Marmite