T/WZCH 007-2023 Explosion-proof distribution box

Scope

Scope: This document specifies the product classification, basic parameters, environmental conditions, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, storage and transportation, and quality commitments of explosion-proof distribution boxes (hereinafter referred to as "distribution boxes"). This document is applicable to distribution boxes used in explosive gas environments of Zone 1, Zone 2, Category IIA, IIB, IIB+H2, or IIC, Group T1 to T6; and/or explosive dust environments of Zone 21, Zone 22, Category IIIA, IIIB, IIIC. Main technical contents: 5. Basic requirements 5.1 Design and development 5.2 Raw materials and components 5.3 Process and equipment 5.4 Inspection and testing 6. Technical requirements 6.1 Appearance and structure 6.2 Impact resistance performance 6.3 Static electricity charge on external non-metallic materials 6.4 Accessory external conductive components 6.5 Replacement of O-ring elastic sealing rings 6.6 "dc" protection level 6.7 Terminal insulation materials 6.8 Overvoltage test 6.9 Internal ignition non-explosion test 6.10 Electrical clearance 6.11 Creepage distance 6.12 Grounding conductors or equipotential conductors connectors 6.13 Dielectric performance 6.14 Thermal shock 6.15 Enclosure protection level 6.16 Corrosion resistance 6.17 Temperature measurement 6.18 Intelligent requirements

Development Information

Related Standards