T/CAEE 048-2026 Active Group standards

T/CAEE 048-2026 Prefabricated Modular Busway

Publish Date: 2026-04-15 Implement Date: 2026-04-30 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/CAEE 048-2026

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Normal diagnostic instruments

ICS Name: Low-voltage switchgear and controllers

Publish Date: 2026-04-15

Implement Date: 2026-04-30

Scope

This document specifies the terms and definitions, classification and marking, conditions of use, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage, as well as installation, operation and maintenance guidance for modular busbars (hereinafter referred to as "modular busbars"). This document is applicable to low-voltage distribution systems in industrial and civil buildings with a rated voltage of not more than 1000 V AC and a frequency of 50 Hz or 60 Hz. 4 Classification and Marking Classification 4.1.1 By conductor material a) Copper conductor busbars (Cu): The conductor is made of electrolytic copper with a purity of not less than 99.95% and a conductivity of not less than 58 MS/m (at 20°C); b) Aluminum alloy conductor busbars (Al): The conductor is made of high-conductivity aluminum alloy with a conductivity of not less than 37 MS/m (at 20°C) and should have good mechanical properties and corrosion resistance. 4.1.2 By insulation method a) Air-insulated busbars (A): The insulation between conductors and between conductors and the shell is achieved by air gaps, supplemented by insulating supports fixed with materials resistant to high temperature and aging; b) Dense-insulated busbars (B): The insulation between conductors and between conductors and the shell is achieved by densely wrapped insulating materials, which should have excellent electrical insulation performance, heat resistance, and flame retardancy. 4.1.3 By shell material a) Steel shell (S): Made of cold-rolled or hot-rolled steel plates, the thickness of which is determined according to the specifications and mechanical strength requirements of the busbar, and the surface is treated with anti-corrosion treatments such as galvanizing and spray painting; b) Aluminum alloy shell (L): Made of aluminum alloy profiles, featuring light weight, high strength, and good corrosion resistance, and the surface can be treated with anodic o

Development Information

Related Standards

GB 7251.2-1997 Replaced

GB 7251.2-1997 Low-voltage switchgear and control gear assemblies—Part 2:Particular requirements for busbar trunking systems(busways)

Publish Date: 1997-12-30

GB/T 11022-1999 Replaced

GB/T 11022-1999 Common specifications for high-voltage switchgear and control gear standards

Publish Date: 1999-10-10

GB/T 18858.1-2002 Replaced

GB/T 18858.1-2002 Low-voltage switchgear and control gear Controller-device interface(CDIs)—Part 1:General rules

Publish Date: 2002-10-08

GB/T 18858.3-2002 Replaced

GB/T 18858.3-2002 Low-voltage switchgear and control gear—Controller-Device interface(CDI)—Part 3:Device Net

Publish Date: 2002-10-08

GB/Z 18859-2002 Replaced

GB/Z 18859-2002 Enclosed low-voltage switchgear and controlgear Assemblies—Guide for testing under conditions of arcing due to internal fault

Publish Date: 2002-10-08

GB 14048.4-2003 Replaced

GB 14048.4-2003 Low-voltage switchgear and controlgear—Electromechanical contactors and motor-starters

Publish Date: 2003-09-10