Detail of GB 14315-1993

Introduction of GB 14315-1993

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. Compression type terminal lugs and ferrules for power cables with copper or aluminium conductors 1 Subject content and applicable scope This standard specifies the type, specification, technical requirements, test, inspection rules, packaging, storage and transportation of compression type terminal lugs and ferrules for power cables with copper or aluminium conductors of 35kV and below, and recommends the die-set and compression connection process key points. This standard is applicable to compression type terminal lugs and ferrules for power cables with copper or aluminium conductors of 35kV and below. The cross-sections of copper and aluminum conductors are respectively 16~400mm2 and 10~400mm2, and can also be referenced by other power cables for fixed laying. 2 Normative references GB 1184 Geometrical Tolerancing - Geometrical tolerances for features without individual tolerance indications GB 1527 Drawing copper tube GB 1800 Tolerance and fitting, generalities, standard tolerances and basic deviations GB 1958 Rules for inspection of form and position tolerances GB 3190 Wrought aluminium and aluminium alloy - Chemical composition GB 3191 Aluminium and aluminium alloys extruded bars, rods GB 3956 Connector for cables and wires for electrical appliances and equipment copper and aluminum GB 3957 Conductor for power cables copper and aluminum GB 4423 Copper bars GB 5231 Wrought coppers - Chemical composition and forms of wrought products GB 5277 Fasteners - Clearance holes for bolts and screws GB 9327 Test methods for compression and mechanical connectors for conductors of power cables 3 Terms 3.1 compression type terminal lugs conductive fitting that connects the cable end conductor to the electrical device by compression connection, in which usually one end connected to the end conductor of the cable is tubular, and the other end connected to the electrical device is a plate of a specific shape 3.2 compression type ferrules a tubular conductive fitting for connecting two or more cable conductors in the middle of the line by compression 3.3 die-set for compression connection metal die-set which can generate plastic deforming at the joint between cable conductor and conductive metal piece by pressure, forming a conductive path at the interface, and having sufficient mechanical strength 4 Product mark and code 4.1 Code 4.1.1 Classification by series Compression type terminal lugs D Compression type ferrules G 4.1.2 Classification by materials Copper T Aluminium L 4.1.3 Classification by structural features Oil-blocking and sealing type M Straight or non-blocking, unsealing type (omitted) Compressing conductor type J Non-compressing conductor type (omitted) Compression cylinder short type S Compression cylinder long type (omitted) 4.2 Product expressions 4.2.1 The product model consists of the codes of product series, material characteristics and structural features. The product is expressed by model, specification, bolt diameter (if any), and the order of the structural feature codes is in accordance with 4.1.3. The composition is as follows: a. Terminal lugs B. Ferrules 4.2.2 Examples a. For the aluminum terminal lugs which are used for the cable with 300mm2 cross section of the conductor (sealed long compressing conductor), and bolt diameter is 16mm, it is expressed as DLMJ-300-16. b. For the copper terminal lugs which are used for the cable with 185mm2 cross section of the conductor (unsealed long compressing conductor), and bolt diameter is 12mm, it is expressed as DTJ-185-12. c. For the copper terminal lugs which are used for the cable with 95mm2 cross section of the conductor (unsealed short uncompressing conductor), and bolt diameter is 12mm, it is expressed as DTS-95-12. d. For the aluminum ferrules which are used for the cable with 120mm2 cross section of the conductor (oil-blocking long non-compressing conductor), it is expressed as GLM-120. e. For the aluminum ferrules which are used for the cable with 240mm2 cross section of the conductor (pass-through long compressing conductor), it is expressed as GLJ-240. f. For the copper ferrules which are used for the cable with 25mm2 cross section of the conductor (pass-through short non-compressing conductor), it is expressed as GTS-25. 5 Product model, name and purpose Product model, name and purpose are as specified in Table 1. Table 1 Model Name (for short) Purpose DTS DTJS Copper terminal lugs used for unsealed short non-compressing conductor (short copper terminal) Copper terminal lugs used for unsealed short compressing conductor (short compressing copper terminal) It is suitable for power cable and other copper stranded conductors, and the sealing requirements are not high and it does not require a large tensile force at the conductor connecting part. DT DTJ Copper terminal lugs used for unsealed long non-compressing conductor (copper terminal) Copper terminal lugs used for unsealed long compressing conductor (compressing copper terminal) It is suitable for power cable and other copper stranded conductors, and the sealing requirements are not high but it requires a relatively large tensile force at the conductor connecting part. DTM DTMJ Copper terminal lugs used for sealed long non-compressing conductor (copper terminal) Copper terminal lugs used for sealed long compressing conductor (sealed compressing copper terminal) It is suitable for oiled paper and XLPE insulated power cable and other copper stranded conductors, and when it requires oil blocking capacity or moisture resistance and bearing relatively large tensile at the conductor connecting part. DLM DLMJ Aluminum lugs used for sealed long non-compressing conductor (sealed aluminum terminal) Aluminum lugs used for sealed long non-compressing conductor (sealed compressing aluminum terminal) It is suitable for oiled paper and XLPE insulated power cable and other aluminum stranded conductors, and when it requires oil blocking or moisture resistance and bearing relatively large tensile force at the conductor connecting part. GTS GTJS Copper ferrules used for pass-through short non-compressing conductor (short copper ferrule) Copper ferrules used for pass-through short compressing conductor (short compressing copper ferrule) It is suitable for power cable and other copper stranded conductors, and it does not require a large tensile force at the conductor connecting part. GT GTJ Copper ferrules used for pass-through long non-compressing conductor (copper ferrule) Copper ferrules used for pass-through long compressing conductor (compressing copper ferrule) It is suitable for power cable and other copper stranded conductors, and it requires a relatively large tensile force at the conductor connecting part. GL GLJ Aluminum ferrules used for pass-through long non-compressing conductor (aluminum ferrules) Aluminum ferrules used for pass-through long compressing conductor (compressing aluminum ferrules) It is suitable for power cable and other aluminum stranded conductors, and it requires a relatively large tensile force at the conductor connecting part. GLM GLMJ Aluminum ferrules used for oil-blocking long non-compressing conductor (oil-blocking aluminum ferrules) Aluminum ferrules used for oil-blocking long compressing conductor (oil-blocking compressing aluminum ferrules) It is suitable for oiled-paper extruded insulated power cable and other aluminum stranded conductors, and when it requires oil blocking capacity and bearing relatively large tensile at the conductor connecting part. Note: The product names below are all indicated by abbreviations.

Contents of GB 14315-1993

Foreword II 1 Subject content and applicable scope 2 Normative references 3 Terms 4 Product mark and code 5 Product model, name and purpose 6 Technical requirements 7 Inspection rules 8 Marking and packaging Annex A Die-set for compression connection (Supplementary) Annex B Mechanical test (Supplementary) Annex C Key points for compression connection process (Informative) Annex D Overall dimensions and deviations of drawn copper ferrule (Informative)