GB/T 20841-2025 Active National standards

GB/T 20841-2025 Heating cables with a rated voltage up to and including 300/500 V for comfort heating and prevention of ice formation

Publish Date: 2025-10-05 Implement Date: 2026-05-01 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: GB/T 20841-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Cables and their accessories

ICS Name: Cable

Publish Date: 2025-10-05

Implement Date: 2026-05-01

Pages: 28 pages

Scope

This document applies to resistance heating cables used in low-temperature environments, such as heating living facilities and preventing ice formation. Heating cables and heating cable assemblies include components that are assembled in factories or on-site (at construction sites) in accordance with the manufacturer's instructions.
Naked conductors and conductors with protective conductors with a supply voltage equal to or less than 50 V are not included in the scope of this document.
Typical applications include, but are not limited to:
—— Heating devices installed inside or under surfaces;
—— Direct and stored heating;
—— Snow melting and anti-freeze protection for roofs, drains, and pipes, etc.

Development Information

Word Count: 43 Thousand words Pages: 28 pages

Replace the following standards

GB/T 20841-2007 Heating cables with a rated voltage of 300/500 V for comfort heating and prevention of ice formation

Referenced Standards

GB/T 16422.3-2022 Plastics—Methods of exposure to laboratory light sources—Part 3:Fluorescent UV lamps GB/T 32348.1-2015 Electrical resistance trace heating systems for industrial and commerci alapplications—Part 1:General and testing requirements IEC 60050-461 IEC 60228 IEC 60332-1-1 IEC 60332-1-2 IEC 60364-7-701 IEC 60364-7-753 IEC 60811-201 IEC 60811-202 IEC 60811-401 IEC 60811-501 IEC 60811-502 IEC 60811-503 IEC 60811-506 IEC 60811-507 IEC 60811-508 IEC 60811-509 IEC 62230