GB 7251.1-2013
Low-voltage switchgear and controlgear assemblies.Part 1:General rules (English Version)

Standard No.

GB 7251.1-2013

Language

Chinese, Available in English version

Release Date

2013

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2024-03

Replace By

GB/T 7251.1-2023

Latest

GB/T 7251.1-2023

Replace

GB 7251.1-2005

Scope

This part of GB 7251 specifies the definition, service conditions, structural requirements, technical characteristics and verification requirements of low-voltage switchgear and control equipment (hereinafter referred to as complete equipment) (see 3.1.1). This standard cannot be used alone to specify a complete equipment or to ensure conformity. The complete set of equipment shall follow the relevant parts of the GB 7251 series; from Part 2 onwards. This standard applies only to low-voltage switchgear and controlgear assemblies that comply with the following relevant standard requirements for complete equipment: - complete equipment with a rated voltage not exceeding 1 000 V for AC and 1 500 V for DC; - with or without enclosure Stationary or mobile plants with enclosures; - plants for use with equipment for the generation, transmission, distribution and conversion of electric energy and for controlling the consumption of electric energy; - those plants designed for special conditions of use , such as complete sets of equipment for ships, rolling stock, as long as they meet other relevant specific requirements; - complete sets designed for the electrical equipment of machines, provided that they meet other relevant specific requirements. This section applies to those one-off design, manufacture and verification or fully standardized series of complete equipment. Production and/or assembly may not be performed by the original manufacturer (see 3.10.1). This part of ISO 10000 is applicable to individual and device components and packaged components, such as motor starters, knife fuse switches, electronic equipment, etc., that comply with the respective relevant product standards.

GB 7251.1-2013 Referenced Document

• GB 16895.21-2011 Low-voltage electrical installations.Part 4-41:Protection for safety.Protection against electric shock
• GB 4208-2008 Degrees of protection provided by enclosure(IP code)
• GB/T 16895.10-2010 Low-voltage electrical installations.Part 4-44:Protection for safety.Protection against voltage disturbances and electromagnetic disturbances
• GB/T 16935.1-2008 Insulation coordination for equipment within low-voltage systems.Part 1:Principles,requirements and tests
• GB/T 17626.11-2008 Electromagnetic compatibility.Testing and measurement techniques.Voltage dips, short interruptions and voltage variations immunity tests
• GB/T 2423.17-2008 Environmental testing for electric and electronic products.Part 2:Test method.Test Ka:Salt mist
• GB/T 2423.2-2008 Environmental testing for electric and electronic products.Part 2:Test methods.Tests B:Dry heat
• GB/T 2423.4-2008 Environmental testing for electrical and electronic products - Part 2: Test method Test Db alternating damp heat (12h + 12h cycle)
• GB/T 4025-2010 Basic and safety principles for man-machine interface,marking and identification.Coding principles for indicators and actuators
• GB/T 4205-2010 Basic and safety principles for man-machine interface(MMI),marking and identification.Actuating principles
• GB/T 5013.3-2008 Rubber insulated cables of rated voltages up to and including 450/750 V.Part 3: Heat resistant silicone insulated cables
• GB/T 5169.10-2006 Fire hazard testing for electric and electronic products Part 10: Glow/hot-wire based test methods Glow-wire apparatus and common test procedure
• GB/T 5169.11-2006 Fire hazard testing for electric and electronic products.Part 11:Glowing/hot-wire based test methods.Glow-wire flammability test method for end-products
• GB/T 5169.5-2008 Fire hazard testing for electric and electronic products.Part 5:Test flames.Needle test method.Apparatus,confirmatory arrangement and guidance
• GB/T 9341-2008 Plastic.Determination of flexural properties

GB 7251.1-2013 history

• 2023 GB/T 7251.1-2023 Low-voltage switchgear and controlgear assemblies - Part 1: General principles
• 2013 GB 7251.1-2013 Low-voltage switchgear and controlgear assemblies.Part 1:General rules
• 2005 GB 7251.1-2005 Low-voltage switchgear and controlgear assemblies-Part 1:Type-tested and partially type-tested assemblies
• 1997 GB 7251.1-1997 Low-voltage switchgear and controlgear assemblies. Part 1: Type-tested and partially type-tested assemblies

GB 7251.1-2013 -All Parts