IEC TS 60076-23:2018 

Power transformers - Part 23: DC magnetic bias suppression devices

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Abstract

IEC TS 60076-23:2018(E) specifies requirements for devices for the suppression of DC magnetic bias of power transformers and convertor transformers. It includes requirements for service conditions, structures, testing, packing, transport and storage.
The devices are connected to neutral points of power transformers and converter transformers to suppress DC bias current in the case an HVDC system is operated in monopole ground return mode or bipolar unbalanced mode. In the case of dedicated metallic return HVDC system, the devices are useful to mitigate DC stray current flowing through power transformers and converter transformers during transient conditions such as DC line fault.
This document applies to DC magnetic bias suppression devices for operation at frequencies of 50 Hz and 60 Hz on power systems having voltages above 110 kV.

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Additional information

Publication typeTechnical Specification
Publication date2018-01-09
Edition1.0
Available language(s)English
TC/SCTC 14 - Power transformersrss
ICS29.180 - Transformers. Reactors
Stability date  2020
Pages31
File size1969 KB

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