T/SDJSXH 01-2019 Active Group standards

T/SDJSXH 01-2019 The power distribution box at the construction site

Publish Date: 2019-12-05 Implement Date: 2020-02-01 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: T/SDJSXH 01-2019

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Health, safety, and labor protection

ICS Name: Civil Engineering Comprehensive

Publish Date: 2019-12-05

Implement Date: 2020-02-01

Scope

Scope: This standard specifies the designation, product classification, marking, function, technical parameters, usage conditions, structural requirements, testing methods, inspection rules, nameplates, and documentation of distribution boxes used in construction site electrical installations. This standard applies to general industrial and civil construction site distribution boxes: - Complete sets of equipment with a rated voltage of no more than 1000V AC or 1500V DC; - Transformers in construction site distribution boxes with a nominal primary voltage and nominal secondary voltage within the specified limits; - Construction projects of electrical supply and utilization facilities with a voltage of no more than 10kV, or any similar workplaces. This standard does not apply to underwater, underground, and mining-specific construction projects using complete sets of equipment. Main technical content: 8. Structural requirements 8.1 The box body is generally composed of side panels, front and rear external doors (for main distribution boxes and sub-distribution boxes), front doors (for switchgear boxes), rainproof hoods, door fittings connecting the front door and internal protective isolation doors, internal protective isolation doors, upper lintel of internal protective isolation doors, instrumentation fixing panels, box body bottom plates, hinges, door locks, and brackets. The protection rating of the box body shell should not be lower than IP44, with all doors closed and all movable panels and covers fixed. Ventilation and drainage holes should not reduce this protection rating, and the protection rating of the working surface inside the door should not be lower than IP21. Main distribution boxes and distribution boxes with a rated current of 400A or more should be designed as vertical outdoor boxes, with instrumentation brackets fixed to the upper part of the box body. After the external doors are closed, the instrumentation should not be exposed. The box body