T/CET 409-2023 Active Group standards

T/CET 409-2023 Assessment and Guidelines for the Impact of Spurious Currents in Urban Rail Transit on DC Bias of Transformers and Protection

Publish Date: 2023-12-15 Implement Date: 2023-12-15 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CET 409-2023

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: The integrated transmission and distribution network

Publish Date: 2023-12-15

Implement Date: 2023-12-15

Scope

Scope: This document specifies the evaluation indicators and limits, evaluation methods, and protection methods for assessing and preventing the impact of urban rail transit stray current on the DC bias of transformers. This document is applicable to the evaluation and prevention of the impact of urban rail transit stray current on the DC bias of transformers in substations with a voltage of 110 kV or higher. Main technical content: This document specifies the evaluation indicators and limits, evaluation methods, and protection methods for assessing and preventing the impact of urban rail transit stray current on the DC bias of transformers. This document is applicable to the evaluation and prevention of the impact of urban rail transit stray current on the DC bias of transformers in substations with a voltage of 110 kV or higher.