GB 7251.2-1997
Replaced
T/ZDQ 004-2024
Active
Group standards
T/ZDQ 004-2024 Time Relay
T/ZDQ 004-2024
Price:
$ 20.00
Basic Information
Standard Code:
T/ZDQ 004-2024
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
-
ICS Name:
Low-voltage switchgear and controllers
Publish Date:
2024-07-18
Implement Date:
2024-09-01
Scope
Scope: This standard applies to time relays used for time control, indication, and other purposes in circuits with a rated AC voltage of 400V or less, a frequency of 50Hz (60Hz), and a DC voltage of 220V or less. It connects and disconnects circuits at a predetermined time. Main technical content: This standard comprehensively regulates the time relays that have been released by enterprises in the past, stipulating the terms, symbols, codes, classification, requirements, test methods, inspection rules, and marking, packaging, transportation, and storage of time relays (hereinafter referred to as relays).
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