PUM - Single phase encapsulated transformers IP21 and IP23
Single phase enclosed transformers of general purpose for building into installations and industrial or power engineering devices. The transformers are made with Class I insulation and protection rating of IP21 or IP23, maximum ambient temperature 40°C, thermal classification: B (130°C). Manufactured in compliance with EN 61558.
Variations coding: PUM (x)(y), e.g. PUM 2501 where:
(x) number equals to 1/10 of power rating in VA
(y) winding makes “0” with dual chamber frame (basic version) and “1” with single chamber frame (reduced short circuit voltage).
Rated power: 1600 – 12000VA
Rated voltage PRI: 110 – 1000V 50/60Hz
Rated voltage SEC: 12 – 500V