1、BRITISH STANDARD BS EN 50109-2-1:1996 Incorporating Amendment No. 1 Hand crimping tools Tools for the crimp termination of electric cables and wires for lowfrequency and radio frequency applications Part 2: Particular requirements Section 2.1 Radio frequency connectors and concentric contacts Open t
2、hroat tools with fixed dies, sizes A to E, V andW The European Standard EN 50109-2-1:1995 has the status of a British Standard ICS 25.140.30BSEN 50109-2-1:1996 This British Standard, having been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of the
3、 Standards Board and comes intoeffect on 15February1996 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 25216 7 Committees responsible for this British Standard The preparation of this Brit
4、ish Standard was entrusted by Technical Committee EPL/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 b) handle span when c
5、rimping is closed and no load applied: 50mm 10mm; c) handle span when tool is fully open: 180mm; d) mass of tool: 0,85kg. NOTEThe nominal measurements inb) andc) of 50mm and180mm shall be made between a point on the outside of the shorter handle 25mm to35mm from its end, and the nearest point on the
6、 outside of the longer handle (pointsP1 andP2 inFigure 1). 4.4 Clearance In order to allow crimping close to the body of large bodied connectors, the tool shall provide clearance in relation to the dies as follows, and as illustrated inFigure 2: a 20 mm square centred on the large die cavity shall b
7、e able to approach within0,4mm of the die face; a 40 mm diameter centred on the large die cavity shall be able to approach within2mm of the die face. 4.5 Locator The provision of a locator is permitted as a means of locating the centre contact of an RF connector during the crimping operation. 4.6 Op
8、erating force (full closure mechanism) The operating force for the full closure mechanism shall be tested as specified in6.6 of Part1. The dies shall be closed and a force shall be applied to the handles at a point30mm to35mm from their ends. The force required to operate the release mechanism shall
9、 be not less than20N.EN 50109-2-1:1995 4 BSI 03-2000 4.7 Operating force (crimping cycle) The operating force for the crimping cycle shall be tested as specified in6.7 of Part1. The appropriate test piece selected fromTable 2 shall be used and shall be crimped at the end of the test piece sleeve. Th
10、e compression force required to perform a crimping cycle, applied to the handles between pointsP1 andP2 (see4.3 andFigure 1) shall not be greater than425N. If the test piece is to be gauged subsequently, the crimping cycle shall be taken only to the point where the full closure mechanism allows rele
11、ase. 4.8 Overload force The crimping tool shall be designed such that it will pass the overload force test (6.8 of Part1) when a force of700N is applied to the handles between pointsP1 andP2 (see4.3 andFigure 1). 4.9 Crimping die cavities The crimping dies shall have die cavities in accordance withT
12、able 1 andFigure 2. 4.10 Die alignment With the dies closed but empty, misalignment of the dies shall not exceed0,25mm in any axis, and the A/F dimensions ofTable 1 shall be maintained. 4.11 Dynamic test Tool performance shall be assessed using the procedure of6.4. This provides a dynamic test compa
13、rable to normal operation. 5 Classification and designation 5.1 Tool style references The tools shall be designated by individual style references which shall consist of three elements, as follows: a) the number of this European Standard followed by a hyphen, i.e.EN50109-; b) the number of this Part
14、 followed by a solidus, i.e.2-1/; c) the die size code which consists of two letters, the first being the die size for the centre contact and the second being the die size for the outer ferrule (crimp sleeve), e.g.WD. EXAMPLE: Tool style reference EN50109-2-1/WD denotes crimping dies having two hexa
15、gon cavities,1,69mm and5,41mm across flats respectively (seeTable 1). 5.2 Marking 5.2.1 The tools shall be marked with the tool style reference (see5.1) in accordance with the requirements of5.1 of Part1. 5.2.2 In addition the crimping dies or the tool frame adjacent to the dies shall be marked with
16、 the size code letters, i.e.the third element of the tool style reference in accordance with5.1 c) andTable 1. 6 Test and acceptance requirements 6.1 General The requirements of clauses6 and7 of Part1 apply using the values specified inclause4 of this Part2-1. 6.2 Mechanical endurance The mechanical
17、 endurance shall be tested as specified in6.9 of Part1. The crimping tool shall be tested without a test piece in the dies and shall be subjected to10000 cycles of operation conducted at a rate of5 to10cycles per minute. An appropriate closing force shall be applied to the handles between pointsP1 a
18、ndP2 to ensure operation of the full closure release mechanism throughout the test. On the completion of each1000 cycles, the gauging procedure of6.4 shall be applied using six test pieces. No adjustment, repairs, cleaning or lubrication is permitted. 6.3 GO and NOT GO gauges The use of cylindrical
19、GO and NOT GO gauges for checking die cavity sizes is recommended as a routine method of test. In the event of defective crimps the requirement of6.4 shall be met. 6.4 Dynamic test procedure 6.4.1 Crimping dies other than those used for centre contacts shall be gauged using test pieces selected from
20、Table 2. Particular requirements for test pieces shall be as follows: sleeve material: copper in accordance with material to ISO designation Cu-ETP or Cu-FRHC, of hardness80-100HV5 measured in accordance with ISO6507, or alloy bar or seamless tube in accordance with material complying with ISO426-1
21、designation CuZn10. insert material: Grade A PTFE. 6.4.2 After crimping, the test pieces shall be visually examined for freedom from surface damage, cracks or flash. The across flats dimensions of the test pieces shall be measured, or checked with the appropriate gauge (seeFigure 4) selected fromTable 3. The measurement shall be made across all flats of the test piece.
