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IEEE C57.109-2018

IEEE Guide for Liquid-Immersed Transformers Through-Fault-Current Duration

standard by IEEE , 10/05/2018

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Full Description

Scope

This guide applies to transformers referenced in IEEE Std C57.12.00 as Categories I, II, III, and IV.1 It sets forth recommendations essential for the application of overcurrent protective devices applied to limit the exposure time of transformers to short-circuit currents (see IEEE Std C37.91™ [B2]).2 This guide is not intended to imply overload capability.

Purpose

Protective devices such as relays and fuses have well-defined operating characteristics that relate fault magnitude to operating time. These characteristic curves should be coordinated with a comparable curve(s) applicable to transformers that relate duration and fault magnitude to withstand capability.

Abstract

Revision Standard - Active. Recommendations believed essential for the application of overcurrent protective devices applied to limit the exposure time of transformers to short circuit current are set forth. Transformer coordination curves are presented for four categories of transformers. There is no intent to imply overload capability.
 

Product Details

Published:
10/05/2018
ISBN(s):
9781504452182, 9781504457583, 9781504451383, 9781504451390, 9781504457590
Number of Pages:
23
File Size:
1 file , 3 MB
Redline File Size:
2 files , 10 MB
Product Code(s):
STDRL23279, STD23279, STDPD23279, STDPDRL23279, STDPL23341
Note:
This product is unavailable in Russia, Ukraine, Belarus
 

Document History

  1. IEEE C57.109-2018

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    IEEE Guide for Liquid-Immersed Transformers Through-Fault-Current Duration

    • Most Recent

  2. IEEE C57.109-1993


    IEEE Guide for Liquid-Immersed Transformers Through-Fault-Current Duration

    • Historical Version

  3. IEEE C57.109-1985


    IEEE Guide for Transformer Through-Fault-Current Duration

    • Historical Version