GB 7251.2-1997
Replaced
T/HEBQIA 421-2025
Active
Group standards
T/HEBQIA 421-2025 Low-voltage distribution switchgear cabinet
T/HEBQIA 421-2025 Low-voltage distribution switchgear cabinet
Price:
$ 20.00
Basic Information
Standard Code:
T/HEBQIA 421-2025
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:
2025-08-28
Implement Date:
2025-08-28
Scope
This document is applicable to complete sets of equipment with a rated AC voltage of no more than 1000 V, which are fixedly installed indoors and used under normal conditions for power distribution, motor control, and line protection. This document specifies the classification, basic electrical parameters, usage conditions, installation conditions, structural requirements, performance requirements, verification, marking, packaging, transportation, and storage of low-voltage complete switch cabinets.
Development Information
Related Standards
GB/T 11022-1999
Replaced
GB/T 11022-1999 Common specifications for high-voltage switchgear and control gear standards
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
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
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
GB 14048.4-2003
Replaced