Detail of GB/T 11918.4-2014

Introduction of GB/T 11918.4-2014

1 Scope This chapter of GB/T 11918.1-2014 is applicable except as follows: Replacement of the first and second paragraphs by the following text: This part of GB/T 11918 specifies the technical requirements such as protection against electric shock, interlocks, switches and their components, construction, mechanical strength and electrical performance of switched socket-outlets and connectors with or without interlock for industrial purposes This part applies to self-contained products that combine within a single enclosure, a socket-outlet or connector according to GB/T 11918.1 and a switching device, with a rated operating voltage not exceeding 1 000V d.c. or a.c. and 500Hz, and a rated current not exceeding 800A, primarily intended for industrial use, either indoors or outdoors. The following text is added after the second paragraph: These accessories are intended to be installed by instructed [electrical] persons (GB/T 2900.73-2008, definition 195-04-02) or skilled [electrical] persons (GB/T 2900.73-2008, definition 195-04-01) only. These products may incorporate an interlock and/or protective devices. 2 Normative Reference The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (include any amendments) applies. This chapter of GB/T 11918.1-2014 Plugs, Socket-outlets and Couplers for Industrial Purposes - Part 1: General Requirements (IEC 60309-1:2012, MOD) is applicable, except as follows: Addition: GB/T 4025 Basic and Safety Principles for Man-machine Interface, Marking and Identification - Coding Principles for Indicators and Actuators (GB/T 4025-2010, IEC 60073:2002, IDT) GB/T 4728 (All Parts) Graphical Symbols for Electrical Diagrams [IEC 60617 DB1) (All Parts)] GB/T 5465 (All Parts) Graphical Symbols for Use on Electrical Equipment [IEC 60417 DB1) (All Parts)] GB/T 11918.2-2014 Plug, Socket-outlets and Couplers for Industrial Purposes - Part 2: Dimensional Compatibility and Interchangeability Requirements for Pin and Contact-tube Accessories (IEC 60309-2:2012, MOD) GB 14048.1 Low-voltage Switchgear and Controlgear - Part 1: General Rules (GB 14048.1-2012, IEC 60947-1:2011, MOD) GB 14048.3 Low-voltage Switchgear and Controlgear - Part 3: Switches, Disconnectors, Swithch-disconnectors and Fuse-combination Units (GB 14048.3-2008, IEC 60947-3:2005, IDT) GB 14048.4 Low-voltage Switchgear and Controlgear - Part 4-1: Contactors and Motor-starters - Low-voltage Electromechanical Contactors and Motor Starters (including Motor Protector) (GB 14048.4-2010, IEC 60947-4-1:2009 Ed.3.0, MOD) GB 14048.5 Low-voltage Switchgear and Controlgear - Part 5-1: Control Circuit Devices and Switching Element - Electromechanical Control Circuit Devices (GB 14048.5-2008, IEC 60947-5-1:2003, MOD) GB 15092.1 Switches for Appliances - Part 1: General Requirements (GB 15092.1-2010, IEC 61058-1:2008, IDT) GB/T 16842 Protection of Persons and Equipment by Enclosures - Probes for Verification (GB/T 16842-2008, IEC 61032:1997, IDT) 3 Terms and Definitions For the purposes of this standard, the terms and definitions specified in GB/T 11918.1-2014 and GB/T 11918.2-2014 as well as the following ones apply. Definitions 3.6 to 3.9 in GB/T 11918.1-2014 are deleted. Addition: 3.101 switched socket-outlet or connector

Contents of GB/T 11918.4-2014

Foreword i 1 Scope 2 Normative Reference 3 Terms and Definition 4 General 5 Standard Ratings 6 Classification 7 Marking 8 Dimensions 9 Protection Against Electric Shock 10 Provision for Earthing 11 Terminals 12 Interlocks, Switches and Their Components 13 Resistance to Ageing of Rubber and Thermoplastic Material 14 General Construction 15 Construction of Socket-outlets 16 Construction of Plugs and Connectors 17 Construction of Appliance Inlets 18 Degrees of Protection 19 Insulation Resistance and Dielectric Strength 20 Breaking Capacity 21 Normal Operation 22 Temperature Rise 23 Flexible Cable and Their Connection 24 Mechanical Strength 25 Screws, Current-carrying Parts and Connections 26 Creepage Distances, Clearances and Distances through Sealing Compound 27 Resistance to Heat, Fire and Tracking 28 Corrosion and Resistance to Rusting 29 Conditional Short-circuit Current withstand Test Figure 101 Actuator Applied Force F Figure 102 Example of Apparatus for Checking the Withdrawal Force Table 101 Withdrawal Force with Respect to Ratings Table 11 Test Current and Cross-Sectional Area(s) of the Conductors during Temperature Rise Table 102 Actuator Test Force F