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...
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...
