1、BRITISH STANDARD BS5550-7.5.4: 1981 Cinematography Part 7: Production and presentation Section7.5 Film and television location lighting Subsection 7.5.4 Specification for single pole high current plugs and socket connectors UDC 778.5.022:771.447:621.316.541112.4BS5550-7.5.4:1981 This British Standar
2、d having been prepared under the directionof the Cinematograph Standards Committee, was published under the authority ofthe Executive Board and comesinto effect on 30 April1981 BSI07-1999 The following BSI references relate to the work on this standard: Committee referenceCMS/4 Draft for comment79/6
3、2539 DC ISBN 0 580 12113 5 Cooperating organizations The Cinematograph Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following: Association of Cinematograph, Television and Allied Technicians* Association of Film Laboratory Employ
4、ers British Broadcasting Corporation* British Film Institute* British Kinematograph, Sound and Television Society* British Photographic Association Chartered Institution of Building Services Cinematograph Exhibitors Association of Gt Britain and Ireland Film Production Association of Great Britain I
5、ndependent Television Companies Association* Royal Photographic Society* The organizations marked with an asterisk in the above list, together with the following, were directly represented on the Technical Committee entrusted with the preparation of this British Standard: Association of Supervisory
6、and Executive Engineers Electrical Installation Equipment Manufacturers Association (BEAMA) Electrical, Electronic, Telecommunications and Plumbing Union Greater London Council Health and Safety Executive Lighting Industry Federation Ltd National Illumination Committee of Great Britain Amendments is
7、sued since publication Amd. No. Date of issue CommentsBS5550-7.5.4:1981 BSI 07-1999 i Contents Page Cooperating organizations Inside front cover Foreword ii 1 Scope 1 2 References 1 3 Definitions 1 4 General requirements 2 5 General notes on tests 2 6 Standard rating 2 7 Classification 2 8 Marking 2
8、 9 Dimensions 2 10 Protection against electric shock 3 11 Terminals and terminations 3 12 Retaining device 3 13 Resistance to ageing of rubber 3 14 Construction 3 15 Moisture resistance 4 16 Insulation resistance and electric strength 5 17 Normal wear and tear 5 18 Temperature rise 5 19 Mechanical s
9、trength 6 20 Resistance to heat, fire and tracking 6 21 Resistance to rusting 7 Figure 1 150 A power outlet and cable outlet contact pin 8 Figure 2 150 A power outlet and cable outlet insulated body 8 Figure 3 150 A cable socket and appliance socket contact tube 9 Figure 4 150 A cable socket and app
10、liance socket insulated body 10 Figure 5 150 A accessory solder cup detail and adaptor thread detail 11 Figure 6 400 A power outlet and cable outlet contact pin 12 Figure 7 400 A power outlet and cable outlet insulated body 13 Figure 8 400 A cable socket and appliance socket contact tube 14 Figure 9
11、 400 A cable socket and appliance socket insulated body 15 Figure 10 400 A accessory solder cup detail and adaptor thread detail 16 Figure 11 Typical assembly of mated pair 17 Figure 12 Diagram showing use of accessories 18 Figure 13 Standard test finger 19 Figure 14 Spray apparatus 19 Figure 15 Spl
12、ash apparatus 20 Figure 16 Normal operation test apparatus 21 Figure 17 Impact test apparatus 21 Figure 18 Arrangement for mechanical strength test 22 Figure 19 Ball pressure apparatus 22 Figure 20 Hot-mandrel apparatus 23 Figure 21 Arrangement and dimensions of the electrodes for the tracking test
13、24 Publications referred to Inside back coverBS5550-7.5.4:1981 ii BSI 07-1999 Foreword This Subsection of BS5550 has been prepared under the direction of the Cinematograph Standards Committee, following a request from the Television Broadcast Industry. Television lighting equipment, evolving from we
14、ll established film studio operations, has been based in general upon the use of original or modified110Vd.c. plant and luminaires. Since television seldom requires the use of carbon arc light sources, a.c. has been adopted at240V for all tungsten lights. As with the low current connectors, the orig
15、inal d.c. high current connectors were retained at the high voltage. It has become apparent that these high current connectors can constitute a safety hazard and that safer ones are required. This standard therefore specifies dimensional and performance requirements for two non-interchangeable conne
16、ctors, one rated at150A and one at400A, for use in the film and television industry. Attention is drawn to the other Subsections of BS5550 dealing specifically with location lighting: Subsection 7.5.1: Code of practice for distribution of electricity for location lighting; Subsection 7.5.2: Specific
17、ation for lighting power distribution units; Subsection 7.5.3: Specification for plugs and socket connectors. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British
18、 Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to24, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorp
19、orated. This will be indicated in the amendment table on the inside front cover.BS5550-7.5.4:1981 BSI 07-1999 1 1 Scope This British Standard specifies requirements for single pole power outlets, cable sockets, cable couplers and appliance couplers (these are all referred to generally throughout the
20、 standard as accessories). The accessories are for use on a.c. supplies with a voltage to earth not exceeding250V and a frequency not exceeding500Hz and on120V d.c. supplies. Two sizes are specified, rated at150A and400A respectively. The accessories are intended for use in the television industry f
21、or lighting purposes “on location” either indoor or outdoors. The accessories are intended for continuous use in ambient temperatures between20 C and+35 C. 2 References The titles of the standards publications referred to in this standard are listed on the inside back cover. 3 Definitions For the pu
22、rposes of this British Standard, the following definitions, together with those given in BS4727, apply. It should be noted that definitions3.2, 3.3 and 3.4 are not in accord with common plug and socketry definitions. This is because, as can be seen from Figure 11, a female socket of this design of c
23、onnector is of such an internal diameter that, should it be powered, its live part could be accessible to the standard test finger. Accordingly it is the protected plug of the connector to which the power is supplied, and these definitions, which describe the functions of these accessories, are in a
24、ccord with this physical realization (see Figure 12). 3.1 on location electronic or motion-picture film cameras are said to be on location when they are used outdoors or indoors in any temporary or permanent building, either static, transportable or mobile, which is not specifically constructed for
25、use as a film or television studio NOTEA licensed theatre is not deemed to be a studio unless it has been specially adapted for regular film or television use. 3.2 power outlet and cable socket means enabling the connection, at will, of a flexible cable to fixed wiring. It consists of a power outlet
26、, provided with a male contact pin with insulated tip, which is the part intended to be installed with the distribution unit, and a cable socket, provided with a contact tube, which is the part integral with or attached to the flexible cable connected to the equipment or to a cable outlet 3.3 cable
27、coupler means enabling the connection, at will, of two flexible cables. It consists of a cable outlet, provided with a male contact pin with insulated tip, which is the part integral with or intended to be attached to the flexible cable connected to the supply, and a cable socket provided with a con
28、tact tube, which is the part integral with or intended to be attached to the flexible cable connected to equipment or to a cable outlet 3.4 appliance coupler means enabling the connection, at will, of a flexible cable to the equipment. It consists of a cable outlet, provided with a male contact pin
29、with insulated tip, which is the part integral with or intended to be attached to the flexible cable connected to the supply, and an appliance socket, provided with a contact tube, which is the part incorporated in or fixed to the equipment, or intended to be fixed to it NOTEThe use of accessories i
30、n 3.2, 3.3 and 3.4 above is shown in Figure 12. 3.5 retaining device mechanical arrangement that holds a socket or outlet in position when it is in proper engagement and that prevents its accidental withdrawal 3.6 rated current current value assigned to the accessory by the maker 3.7 maximum rated v
31、oltage maximum voltage at which any component part may be used NOTEWhere the terms “voltage” and “current” are used they imply r.m.s. values. 3.8 functional insulation insulation necessary for the proper functioning of the accessory and for basic protection against electric shock 3.9 solder cup rece
32、ss in the termination into which the conductor is soldered 3.10 compression terminal arrangement whereby the conductor is placed into a recess which is subsequently distorted by mechanical means so as permanently and securely to connect the conductor to the terminationBS5550-7.5.4:1981 2 BSI 07-1999
33、 4 General requirements Accessories shall be so designed and constructed that in normal use their performance is reliable and without danger to the user or surroundings. The accessories shall be of two non-interchangeable sizes with maximum current ratings of150A and400A respectively and they shall
34、be of splashproof design. Apart from current-carrying parts, accessories shall be of insulating material. Cases shall not be of metal. 5 General notes on tests 5.1 Tests according to this specification are type tests. 5.2 Unless otherwise specified elsewhere in this standard, the samples are tested
35、as delivered and under normal conditions of use, at an ambient temperature of20 5 C. The tests are made at rated frequency. 5.3 Unless otherwise specified elsewhere in this standard, the tests are carried out in the order of the clauses. 5.4 Three samples are subjected to all the tests. 5.5 Accessor
36、ies do not comply with the requirements of this standard if there are more failures than that of one sample in one of the tests. If one sample fails in a test, that test, and all preceding tests that may have influenced the results of that test, are repeated on another set of three samples. If any o
37、f these samples fails in any of the repeated tests, the accessory shall be deemed not to comply with the requirements of this British Standard. NOTEIn general, it will only be necessary to repeat the test which caused the failure. 6 Standard rating 6.1 Maximum rated voltages to earth are250V a.c. up
38、 to500Hz and120V d.c. 6.2 Maximum rated currents are150A and400A. 7 Classification Accessories shall be classified according to their purpose as follows (see Figure 12): a) power outlets and cable sockets; b) cable couplers, comprising a cable outlet and a cable socket; c) appliance coupler, compris
39、ing a cable outlet and an appliance socket. 8 Marking 8.1 Accessories shall be marked with the following: a) rated current in amperes; b) maximum rated voltage in volts; c) symbol for splashproof construction; d) the number of this British Standard, i.e.BS5550-7.5.4 1) ; e) makers name or trade mark
40、; f) type reference, which may be a catalogue number. 8.2 When symbols are used, they shall be as follows: 8.3 For cable outlets and cable sockets, the marking specified in8.1 shall be easily discernible when the accessory is wired ready for use. NOTEThe term “ready for use” does not imply the socke
41、t or outlet is in engagement with its complementary accessory. 8.4 Marking shall be indelible and easily legible. TEST. Compliance with the requirements of8.1 to8.4 shall be checked by inspection. In addition, after the humidity treatment given in clause15, the marking shall be rubbed vigorously by
42、hand for15s with a piece of cloth soaked with petroleum spirit, and then checked by inspection. The marking shall again be checked by inspection after the test given in20.2. 9 Dimensions 9.1 The essential dimensions of accessories shall be as shown in Figure 1 to Figure 10. TEST. Compliance shall be
43、 checked by measurement. 9.2 It shall not be possible to engage accessories having different current ratings. 1) Marking BS5550-7.5.4 on or in relation to a product is a claim by the manufacturer that the product has been manufactured in accordance with the requirements of the standard. The accuracy
44、 of such a claim is therefore solely the manufacturers responsibility. Enquiries as to the availability of third party certification to support such claims should be addressed to the Director, British Standards Institution, Maylands Avenue, Hemel Hempstead, Herts HP2 4SQ in the case of certification
45、 marks administered by BSI or to the appropriate authority for other certification marks. A amperes V volts alternating current direct current splashproof constructionBS5550-7.5.4:1981 BSI 07-1999 3 10 Protection against electric shock The insulated bodies of accessories shall be of rubber of suitab
46、le composition. Accessories shall be so designed that: a) when they are wired as in normal use live parts are not accessible; b) when they are in partial or complete, engagement, live parts are not accessible. TEST. Compliance shall be checked by inspection and, if necessary, for the sample wired as
47、 in normal use, by applying the standard test finger (see Figure 13) in every possible position, an electrical indicator with a voltage not less than40V being used to show contact with the relevant parts. The test finger shall not make contact with any live part. 11 Terminals and terminations 11.1 T
48、he terminations shall be of the adaptor thread type to accept a ferrule connector or of the solder cup type complying with the requirements of Figure 5 and Figure 10. These terminations shall be an integral part of the accessory. A ferrule connector used for connecting a conductor to an adaptor thre
49、ad shall be so designed that: a) it can be securely fixed and locked to the accessory by means which are electrically and mechanically efficient; b) it does not increase the overall diameters or interfere with the basic interchangeability of the accessory; c) the requirements of BS4579-1 can be met. TEST. Compliance shall be checked by inspection. 11.2 The cable/accessory joint shall be sealed against the ingress of moisture and relieved of bending stress by the use of heat-shrink tubing. The tubing shall be of the t
