1、BRITISH STANDARD BS EN 50109-2-5:1996 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 2.5 Termination of twin-ax cable for databus applications Th
2、e European Standard EN 50109-2-5:1995 has the status of a British Standard ICS 25.140.30BSEN50109-2-5:1996 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 15 February
3、1996 BSI 03-2000 The following BSI references relate to the work on this standard: Committee reference EPL/46/4 Draft announced in BSI News October 1995 ISBN 0 580 25214 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee E
4、PL/46, Cables, wires and waveguides, RF connectors and accessories for communication and signalling, to Subcommittee EPL/46/4, RF connectors, on which the following bodies were represented: AEA Technology BEAMA Electrical Cable a tool for contacts with crimp barrel size20 (tool reference EN50109-2-5
5、-002), see clause5. 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 public
6、ations are listed 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
7、:1994, Hand crimping tools Tools for the termination of electrical cables and wires for low frequency and radio frequency applications Part 1: General requirements and tests. EN 50109-2-3:1995, Hand crimping tools Tools for the crimptermination of electrical cables and wires for low frequency and ra
8、dio frequency applications Part 2-3: Particular requirements for contacts oc electrical connectors. ISO 468, Assessment of surface texture: Methods and instrumentation. ISO 4287-1, Glossary of surface roughness terms: Surface and its parameters. ISO 6507, Method for Vickers hardness test and for ver
9、ification of Vickers hardness testing machines. CECC 22000, Generic Specification: Radio frequency coaxial connectors (Parts I, II and III). AECMA Standard 2G 210, Specification for PTFE insulated equipment wires (with silver plated copper conductors). 3 Definitions For the purpose of this Part4, th
10、e definitions given in Part1 apply. 4 Requirements 4.1 General Crimping tools shall comply with the requirements of4.1 to4.3, 4.5 to4.8, 4.10 to 4.12, 4.14 and 5.1 of Part1. 4.2 Indentor operation The design of the crimping tool shall be such that all indentors travel with uniform and simultaneous m
11、ovement when the tool is operated through distances typical of those shown inFigure A.1. NOTEDimensions of indentors and gauges are given in Figure A.2. 4.3 Crimping operation A positioner shall be provided for the proper holding and location of the contacts during the crimping operation during whic
12、h, except for elongation, there shall be no movement of the contact. 4.4 Outline dimensions The tools designated EN50109-2-5-001 and -002 shall have the outline dimensions shown in Figure A.1. 4.5 Mass The maximum mass of the tool shall be0,7kg. 4.6 Operating force (crimping cycle) When the tool is
13、tested as described in6.7 of Part1, using the largest combination of contact and wire for which the tool is designed, the force applied shall not be greater than200N when applied to the handles at a point30mm to35mm from their ends.EN50109-2-5:1995 4 BSI 03-2000 4.7 Overload force When tested as des
14、cribed in6.8 of Part1, 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 maximum forc
15、e being maintained for30s. 4.8 Indentors The dimensions, and arrangement of the indentors shall be in accordance withFigure A.2 when tested using the gauges given in that figure. When visually examined, without the aid of magnification, the surface texture of the indentors shall be smooth and free f
16、rom cracks. 4.9 Crimped joints 4.9.1 General The tool shall be designed such that it will produce crimped joints complying with the requirements given in4.9.2 to4.9.5, when tested as described inAnnex C. 4.9.2 General examination There shall be no evidence of cracks in the material of the crimp barr
17、el or its plated surface finish when examined with a magnification of 10. 4.9.3 Deformation of crimp barrel The out-of-roundness of the barrel after crimping shall not exceed the maximum diameter before crimping by more than the following: 4.9.4 Run-out (axial concentricity) The run-out of crimped c
18、ontacts shall not exceed0,28mm total indicator reading (TIR). NOTEThis includes a tolerance for the manufacture of the contact. 4.9.5 Tensile strength The pull-off load for crimped joints made with solid or stranded copper and high strength copper alloy conductors of the sizes and characteristics gi
19、ven inTable 1 shall be not less than the relevant minimum value given in that table. Table 1 Requirements for tensile strength ofcrimped joints 4.10 Gauging When the space between opposing closed indentors is tested using the appropriate GO gauge fromFigure A.2, the gauge shall pass cleanly through.
20、 The appropriate NOT GO gauge shall not pass through the space between the closed indentors. The gauges used shall be made from hardened and tempered tool steel. 4.11 Mechanical endurance When tested as described in6.9 of Part1 under the conditions specified inAnnex D, the tool shall: form test join
21、ts after50000, 100000, 150000 and 200000 cycles that shall comply with4.9.2 to4.9.5; comply, after 200000 cycles, with the requirements of6.9 of Part1. 4.12 Salt mist When tested as described in6.10 of Part1 the tool shall comply with the requirements of that clause. 4.13 Low temperature crimping Wh
22、en tested as described in6.11 of Part1the tool shall comply with the requirements of that clause. 5 Test and acceptance requirements With the following exceptions, type testing and production testing of tools shall be in accordance with clauses6 and7 of Part 1: the modified test methods given inAnne
23、x C andAnnex D of this Part2-5 shall be used; for the purposes of type testing, the methods of test described inAnnex C for crimped joints shall be carried out after the overload force test of6.8 of Part1, using crimped joints made with the crimping tools under test. Crimp barrel size 20: 0,15 mm Sm
24、aller 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 NOTEHigh strength copper alloy conductor onlyEN50109-2-5:1995 B
25、SI 03-2000 5 6 Classification and designation The tools shall be designated by individual references which shall consist of three elements as follows: the number of this European Standard followed by a hyphen,i.e.EN 50109-; the number of this Part followed by a hyphen,i.e.2-5; the number of the tool,i.e.001 or 002. EXAMPLE: Reference EN 50109-2-5-001 designates the tool shown inFigure A.1andFigure A.2 for size22wire. 7 User information User information in accordance with5.3 of Part1shall be provided. NOTEDetails of user control gauge tools are given inTable D.2 andTable D.3 andFigure D.1.
