T/SDWCIA 0031-2025 Active Group standards

T/SDWCIA 0031-2025 Medium Voltage DC Cable for Distribution Network

Publish Date: 2025-12-24 Implement Date: 2025-12-24 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/SDWCIA 0031-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Normal diagnostic instruments

ICS Name: Cable

Publish Date: 2025-12-24

Implement Date: 2025-12-24

Scope

This standard specifies the structure, dimensions, and test requirements for medium-voltage DC cables used to connect DC equipment with a rated voltage of 5kV to 50kV in power distribution networks. It applies to the selection and production of medium-voltage DC cables used to connect DC equipment with a rated voltage of 5kV to 50kV. 3 Terms and Definitions 3.1 Terms and Definitions of Dimensional Values (Thickness, Cross-Sectional Area, etc.) 3.1.1 Nominal Value A specified value that is often used in tables. The values derived from the nominal value are usually subject to specified tolerances and verified through measurements. 3.1.2 Approximate Value A value that is neither guaranteed nor verified, for example, due to calculations based on other dimensional values. 3.1.3 Median Value When the values obtained from a test are arranged in increasing (or decreasing) order, if the number of values is odd, the middle value is the median value; if the number of values is even, the average of the two middle values is the median value. 3.1.4 Assumed Value A value calculated according to Appendix A (Normative Appendix) of GB/T 12706.2-2020. 3.2 Terms and Definitions Related to Testing 3.2.1 Routine Tests Tests conducted by the manufacturer on all manufactured lengths of finished cables to verify whether all cables meet the specified requirements. 3.2.2 Sample Tests Tests conducted by the manufacturer on sample finished cables or on certain components taken from finished cables at specified frequencies to verify whether the cables meet the specified requirements. 3.2.3 Type Tests Tests conducted on a type of cable included in this standard before delivery to demonstrate that the cable has good performance that meets the expected usage conditions. The characteristic of this test is that unless changes in the cable material, design, or manufacturing process may alter the cable's characteristics, the test does not need to be repeated after it has been conducted. 3.2.4 Electrica