GB 7251.2-1997
Replaced
T/ZDQ 002-2024
Active
Group standards
T/ZDQ 002-2024 Communication contact relay
T/ZDQ 002-2024 Communication contact relay
Price:
$ 20.00
Basic Information
Standard Code:
T/ZDQ 002-2024
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: Contactors are mainly suitable for AC 50Hz (or 60Hz) power systems with a rated working voltage of up to 690V. Under the AC-3 usage category, when the rated working voltage is 380/400V, they are used to connect and disconnect circuits in power systems with a rated working current of up to 95A. They are also suitable for frequently controlling AC motors, and can be combined with appropriate thermal relays or electronic protection devices to form electromagnetic starters to protect circuits that may experience overloads. Main technical content: This standard specifies the types, parameters, technical requirements, test methods, and inspection rules for AC contactors (hereinafter referred to as contactors).
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