Can I read Overvoltages in Ungrounded-Wye Transformers on EtoBox?

Overvoltages in Ungrounded-Wye Transformers by Suporte Temporário is a document available to read on EtoBox.

What is Overvoltages in Ungrounded-Wye Transformers about?

This document discusses the severe overvoltages generated by ungrounded-wye delta transformer banks when one phase is disconnected, leading to neutral shift and ferroresonance phenomena. The impact on metal-oxide surge arresters is evaluated, highlighting the risks of failure due to these overvoltages, and design practices are suggested to mitigate these issues. Field tests confirm the vulnerability of these transformer banks to self-generated overvoltages, with recorded voltages exceeding standard test lev

Author

Suporte Temporário

Language

EN