Detail of GB 17464-2012

Introduction of GB 17464-2012

1 Scope This standard specifies technical requirements on main characteristics, connection of conductors, constructional requirements and test method for clamping units applicable to connection of conductors having a cross-sectional area of 0.2mm² up to and including 35mm². This standard applies to screw-type and screwless-type clamping units for connecting devices, either as separate entities or as integral parts of equipment, for the connection of electrical copper conductors (complying with GB/T 3956), rigid (solid or stranded) and/or flexible, having a cross-sectional area of 0.2mm² up to and including 35mm² and equivalent AWG sizes with a rated voltage not exceeding 1 000V a.c. with a frequency up to and including 1 000Hz, and 1 500V d.c.. It applies to clamping units primarily suitable for connecting unprepared conductors. This standard does not apply to clamping units a) for connection by crimping or soldering; b) for data and signalling circuits; c) for flat quick-connect terminations, insulation-piercing connecting devices and twist-on connecting devices, which are covered by GB 17196[3], GB 13140.4[1] and GB 13140.5[2] respectively. 2 Normative References 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 (including any amendments) applies. GB/T 9797-2005 Metallic Coatings -- Electrodeposited Coatings of Nickel plus Chromium and of Copper plus Nickel plus Chromium (ISO 1456-2003, IDT) GB/T 18213-2000 Guide to the Calculation of Resistance of Plain and Coated Copper Conductor of Low-frequency Cables and Wires (idt IEC 60344-1980) IEC 60228-1978 Conductors of Insulated Cables IEC 60228A-1982 Conductors of insulated Cables - First Supplement IEC 61545-1996 Connecting Devices - Devices for the Connection of Aluminium Conductors in Clamping Units of Any Material and Copper Conductors in Aluminium Bodied Clamping Units ISO 2081-1986 Metallic Coatings - Electroplated Coatings of Zinc on Iron or Steel ISO 2093-1986 Electroplated Coatings of Tin - Specification and Test Methods 3 Terms and Definitions For the purposes of this document, the following terms and definitions apply. 3.1 clamping unit the part(s) of the terminal necessary for the mechanical clamping and the electrical connection of the conductor(s), including the parts which are necessary to ensure the correct contact pressure 3.2 terminal the conductive part of one pole, composed of one or more clamping unit(s) and insulation if necessary 3.3 connecting device

Contents of GB 17464-2012

Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 General Requirements 5 General Notes on Tests 6 Main Characteristics 7 Connection of Conductors 8 Constructional Requirements 9 Tests Annex A (Normative) Approximate Relationship Between mm2 and AWG Sizes Annex B (Normative) Rated Connecting Capacity and Corresponding Gauges Annex C (Normative) Construction of Stranded Conductors Bibliography