Thanks for replies. Although cost is always a factor, I need to try and fit in with current equipment on site. I have tried Schneider and ABB, both of whom offered only a standard indoor type enclosure. Looks like I will have to get a GRP enclosure myself. Any comments on using cast resin tx in...
I need to spec and buy a transformer to supply a new plant that we are putting in a remote corner of an existing site. All existing transformers on site are dry types, and site engineers prefer to keep this new one similar. I have looked at GRP enclosures (plus suitable IP rated enclosure around...
Thank you all for the interesting posts.
I realise now that I didn't state that we always use solid earthed neutrals on our projects.
I believe that class X CTs are still required (and we always spec them).
Part of the reason I started looking into REF protection was because I had a couple of...
At what kVA and what transformer design (dry, oil etc.) does it become sensible to use REF to protect secondaries?
In the past, my company (UK based but many plants around the world) used oil xformers outdoors with cables to LV switchboards, and always used REF. Now, trend is to dry transformers...
