1、BRITISH STANDARD BS EN 50109-2-3: 1996 Incorporating Amendment No. 1 Hand crimping tools Tools for the crimp termination of electric cables and wires for low frequency and radio frequency applications Part 2: Particular requirements Section 2.3 Contacts of electrical connectors The European Standard
2、 EN 50109-2-3:1995 has the status of a British Standard ICS 25.140.30BSEN50109-2-3:1996 This British Standard, having been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of the Standards Board and comes intoeffect on 15March1996 BSI 03-2000 The fol
3、lowing BSI references relate to the work on this standard: Committee reference EPL/46/4 Draft announced in BSI News October 1995 ISBN 0 580 25212 4 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee EPL/46, Cables wires and
4、waveguides, RF connectors and accessories for communication and signalling, to Subcommittee EPL/46/4, RFconnectors, on which the following bodies were represented: AEA Technology BEAMA Electrical Cable a tool for contacts with crimp barrel size 20 and smaller (tool reference EN50109-2-3-300), see cl
5、ause5. It includes requirements for crimped joints made with the tools. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are li
6、sted hereafter. For dated references, subsequent amendments to, or revisions of, any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. EN 50109-1:1994, Hand c
7、rimping tools Tools for the termination of electrical cables and wires for low frequency and radio frequency applications Part1: General requirements and tests. ISO 468, Assessment of surface texture: Methods and instrumentation. ISO 4287-1, Glossary of surface roughness terms:Surface and its parame
8、ters. ISO 6507, Method for Vickers hardness test and for verification of Vickers hardness testing machines. CECC 22000, Generic Specification: Radio frequency coaxial connectors (Parts I, II and III). CECC 75400, Specification for removable contacts of assessed quality for electrical connectors. AEC
9、MA Standard 2G 210, Specification for PTFE insulated wires (with silver plated copper conductors). 3 Definitions For the purpose of this Part 2-3, the definitions given in Part 1 apply. 4 Requirements 4.1 General Crimping tools shall comply with the requirements of clause 4 of Part 1. 4.2 Indentor o
10、peration The design of the crimping tool shall be such that all indentors travel with uniform and simultaneous movement when the tool is operated through distances typical of those shown inFigure A.1 or Figure A.4, as appropriate. NOTEDimensions of indentors and gauges are given in Figure A.2 orFigu
11、re A.5, as appropriate. 4.3 Crimping operation Positioners or turrets shall be provided for the proper holding and location of the contacts during the crimping operation during which, except for elongation, there shall be no movement of the contact. NOTETypical turrets and positioners shown inFigure
12、 A.3 and Figure A.6, as appropriate, are described in Annex B. 4.4 Outline dimensions The tool designated EN 50109-2-3-100 shall have the outline dimensions shown inFigure A.1. The tool designated EN50109-2-3-300 shall have the outline dimensions shown inFigure A.4.EN50109-2-3:1995 4 BSI 03-2000 4.5
13、 Mass The maximum mass of the tool designated EN50109-2-3-100 without positioner or turret shall be0,7kg. The maximum mass of the tool designated EN50109-2-3-300 without positioner shall be0,45kg. 4.6 Operating force (crimping cycle) When the tool is tested as described in6.7 of Part 1 using the lar
14、gest combination of contact and wire for which the tool is designed, the force applied shall be not greater than400N for the tool designated EN50109-2-3-100 or200N for the tool designated EN50109-2-3-300 when applied to the handles at a point30mm to35mm from their ends. 4.7 Overload force When teste
15、d as described in 6.8 of Part 1 except for the magnitude of the applied force, the tool shall comply with the requirements of that clause. The force shall be applied to the handles at a point30mm to35mm from their ends and shall increase at a rate of not more than25N/s until it reaches670N, this max
16、imum force being maintained for30s. 4.8 Indentors The dimensions, and arrangement of the indentors shall be in accordance withFigure A.2 and Figure A.5 when tested using the gauges given in those figures. When visually examined, without the aid of magnification, the surface texture of the indentors
17、shall be smooth and free from cracks. 4.9 Marking Data plates shall be permanently affixed to turrets and positioners and the information on them shall be legible. Positioners and turrets shall be marked in accordance with5.1 of Part 1. When colour codes are used to indicate the contact size for tes
18、t contacts, the colours used for each size of positioner shall be in accordance with Annex C. 4.10 Crimped joints 4.10.1 General The tool shall be designed such that it will produce crimped joints complying with the requirements given in4.10.2 to 4.10.5, when tested as described inAnnex D. 4.10.2 Ge
19、neral examination There shall be no evidence of cracks in the material of the crimp barrel or its plated surface finish when examined with a magnification of 10. 4.10.3 Deformation of crimp barrel The out-of-roundness of the barrel after crimping shall not exceed the maximum diameter before crimping
20、 by more than the following: 4.10.4 Run-out (axial concentricity) The run-out of crimped contacts shall not exceed0,31mm total indicator reading (TIR) for sizes12 and16 contacts and0,28mm TIR for size20 and smaller. NOTEThis includes a tolerance for the manufacture of the contact. 4.10.5 Tensile str
21、ength The pull-off load for crimped joints made with solid or stranded copper and high strength copper alloy conductors of the sizes and characteristics given inTable 1 shall be not less than the relevant minimum value given in that table. Table 1 Requirements for tensile strength of crimped joints
22、4.11 Gauging When the space between opposing closed indentors is tested using the relevant GO gauge from Figure A.2 orFigure A.5, as appropriate, the gauge shall pass cleanly through. The appropriate NOT GO gauge from the appropriate figure shall not pass through the space between the closed indento
23、rs. The gauges used shall be made from hardened and tempered tool steel. Crimp barrel size 20 and larger: 0,15 mm Smaller crimp barrel sizes: 0,05 mm Conductor size number Number/nominal diameter of strands Minimum tensile pull-off load mm N 28 7/0,125 12,5 26 19/0,10 25 24 19/0,12 40 24 19/0,118 (see note) 53 23 1/0,60 53 22 19/0,15 50 20 19/0,20 85 18 19/0,25 140 16 19/0,30 170 14 37/0,25 250 12 37/0,315 450 NOTEHigh strength copper alloy only
