1、BRITISH STANDARD AEROSPACE SERIES BS4G173-2: 1985 ISO 461-2: 1985 Connectors for ground electrical supplies for aircraft Part 2: Specification for dimensions ISO title: Aircraft Connectors for ground electrical supplies Part2: Dimensions UDC 629.7.064.5:621.316.541BS4G 173-2:1985 This British Standa
2、rd, having been prepared under the directionof the Aerospace Standards Committee, was published under the authority ofthe Board of BSI and comes intoeffect on 29November1985 BSI 12-1999 The following BSI references relate to the work on this standard: Committee referenceACE/6 Draft for comment84/731
3、61DC ISBN 0 580 14708 8 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Aerospace Standards Committee (ACE/-) to Technical Committee ACE/6, upon which the following bodies were represented: BEAMA Ltd. British Rubber Manufacturers Associa
4、tion Civil Aviation Authority Electric Cable Makers Confederation Electronic Components Industry Federation Electronic Engineering Association Ministry of Defence National Supervising Inspectorate Society of British Aerospace Companies Limited Amendments issued since publication Amd. No. Date of iss
5、ue CommentsBS4G 173-2:1985 BSI 12-1999 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope and field of application 1 2 Reference 1 3 Definitions 1 4 Dimensions 1 Figure 1 Basic dimensions for style1A,28Vd.c., aircraft fixed connector 2 Figure 2 Basic dimensions fo
6、r style1B,28Vd.c., ground supplyfreeconnector 3 Figure 3 Basic dimensions for style2A,112Vd.c., aircraft fixed connector 4 Figure 4 Basic dimensions for style2B,112Vd.c., ground supplyfreeconnector 5 Figure 5 Basic dimensions for style3A,200Va.c.,400Hz, 3-phase aircraft fixed connector 6 Figure 6 Ba
7、sic dimensions for style3B,200Va.c.,400Hz, 3-phase ground supply free connector 7 Publication referred to Inside back coverBS4G 173-2:1985 ii BSI 12-1999 National foreword This British Standard has been prepared under the direction of the Aerospace Standards Committee and is identical with ISO461-2:
8、1985 “Aircraft Connectors for ground electrical supplies Part 2: Dimensions” published by the International Organization for Standardization (ISO). Together with BS4G173-1 it supersedes BS3G173:1972 which is withdrawn, and takes account of international agreement by Technical Committee ISO/TC20 in r
9、elation to the requirements of connectors for ground electrical supplies for aircraft. Terminology and conventions. The text of the InternationalStandard has been approved as suitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical
10、with those used in British Standards; attention is drawn especially to the following. The comma has been used as a decimal marker for metric dimensions. In British Standards it is current practice to use a full point on the baseline as the decimal marker. Whenever the words “part of ISO461” appear,
11、referring to this standard, they should be read as “Part of BS4G173”. 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 Standard does not of itself confer immu
12、nity from legal obligations. Cross-reference International Standard Corresponding British Standard ISO 461-1:1985 BS4G173 Connectors for ground electrical supplies for aircraft Part 1:1985 Specification for design, performance and test requirements (Identical) Summary of pages This document comprise
13、s a front cover, an inside front cover, pagesi andii, pages1to8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS4G 173-2:1985 BSI 12-1999 1
14、1 Scope and field of application This part of ISO461 specifies the dimensions for the following connectors used to supply electrical power from a ground source to an aircraft: Style 1A 28Vd.c., aircraft fixed connector Style 1B 28Vd.c., ground supply free connector Style 2A 112Vd.c., aircraft fixed
15、connector Style 2B 112Vd.c., ground supply free connector Style 3A 200Va.c.,400Hz,3-phase aircraft fixed connector Style 3B 200Va.c.,400Hz,3-phase ground supply free connector NOTEISO461-1 specifies the design, performance and test requirements for the connectors. 2 Reference ISO 461-1, Aircraft Con
16、nectors for ground electrical supplies Part1: Design, performance and test requirements. 3 Definitions For the purposes of this part of ISO461, the definitions given inISO461-1 apply. 4 Dimensions The aircraft fixed connector and ground supply free connector shall comply with the dimensions and tole
17、rances shown inFigure 1 toFigure 6, as appropriate.BS4G 173-2:1985 2 BSI 12-1999 NOTE 1The length of engagement of the male contacts in the female contacts shall not be affected by the method of mounting theaircraft fixed connector. NOTE 2On pressurized mountings, this surface shall be suitabletoena
18、ble a sealed joint to be made, when the shroud is passed through the aircraft structure. NOTE 3The control male contact shall be used at positive polarityand at the voltage of the main positive male contact. NOTE 4Hole dimensions shall be suitable for the particular fixedconnector. NOTE 5Dimensions
19、P, Q andR refer to the alternative4-hole fixing method. Dimension mm in A 54 0,8 2.125 0.03 B 50,8 0,4 2.0 0.015 C 19,1 0,4 0.75 0.015 D 77,77 3.062 E 11,1 0.437 F 7,92 0.312 G 19,43 0,5 0.765 0.02 H 25,4 0,25 1.0 0.01 J 28,35 1.117 K 21,25 0.836 L 49 1.929 M 5,4 0.213 N max. 57,2 2.25 P a 9,53 0,13
20、 0.375 0.005 Q a 47,63 0,4 1.875 0.015 R a 5,1 0.205 a See note5. Figure 1 Basic dimensions for style1A,28Vd.c., aircraft fixed connector +1 0 +0.04 0 0 0,05 0 0.002 0 0,05 0 0.002BS4G 173-2:1985 BSI 12-1999 3 NOTE 1Beyond this point, the overall dimensions shall not exceedthe envelope shown by the
21、chain line in the plan view. NOTE 2The split female contact for the control male contact shallbe used at positive polarity and at the voltage of the femalecontact for the main positive male contact. NOTE 3Individual female contacts shall have a maximum radialmovement of0,5mm(0.020in). The fit of the
22、 male and female main contacts shall be such as to limit the voltage drop ateach connection, excluding the cable terminations, to the requirements ofISO461-1. Dimension mm in A 51,6 min. 2.031 min. B 31,8 min. 1.25 min. C a 63,5 2.5 D 4,45 2,5 max. min. 0.175 0.100 max. min. E 41,9 1.65 F 16,64 0,25
23、 0.655 0.01 G 76,2 3.0 H 25,4 0,25 1.0 0.01 J 63,5 2.5 a Minimum length before any increase in cross-section. Figure 2 Basic dimensions for style1B,28Vd.c., ground supply free connector 0 1,6 0 0.062BS4G 173-2:1985 4 BSI 12-1999 NOTE 1The length of engagement of the male contacts in the female conta
24、cts shall not be affected by the method of mounting theaircraft fixed connector. NOTE 2On pressurized mountings, this surface shall be suitabletoenable a sealed joint to be made, when the shroud is passed through the aircraft structure. NOTE 3The control male contact shall be used at positive polari
25、tyand at the voltage of the main positive male contact. NOTE 4Hole dimensions shall be suitable for the particular fixedconnector. Dimension mm in A 54 0,8 2.125 0.03 B 50,8 0,4 2.0 0.015 C 19,1 0,4 0.75 0.015 D 65,02 2.56 E 11,1 0.437 F 7,92 0.312 G 14,27 0,5 0.562 0.02 H a 15,06 0,5 0.593 0.02 J 1
26、7,45 0,25 0.687 0.01 K a 10,31 0,5 0.406 0.02 L 26,2 1.031 M 19,05 0.75 N 42,85 1.6875 P 6,1 0.24 R 57,2 2.25 a Radius. Figure 3 Basic dimensions for style2A,112Vd.c., aircraft fixed connector +1 0 +0.04 0 0 0,05 0 0.002 0 0,05 0 0.002BS4G 173-2:1985 BSI 12-1999 5 NOTE 1Beyond this point, the overal
27、l dimensions shall not exceed the envelope shown by the chain line in the plan view. NOTE 2The split female contact for the control male contact shallbe used at positive polarity and at the voltage of the femalecontact for the main positive male contact. NOTE 3Individual female contacts shall have a
28、 maximum radialmovement of0,5mm (0.020in). The fit of the male and female main contacts shall be such as to limit the voltage drop ateach connection, excluding the cable terminations, to the requirements ofISO461-1. Dimension mm in A 51,6 min. 2.031 min. B 31,8 min. 1.25 min. C a 63,5 2.5 D 4,45 2,5
29、 max. min. 0.175 0.100 max. min. E 38,1 1.5 F 14,27 0,25 0.562 0.01 G 17,45 0,25 0.687 0.01 H 57,2 2.25 J b 9,53 0,25 0.375 0.01 K b 14,27 0,25 0.562 0.01 a Minimum length before any increase in cross-section. b Radius. Figure 4 Basic dimensions for style2B,112Vd.c., ground supply free connectorBS4G
30、 173-2:1985 6 BSI 12-1999 NOTE 1The length of engagement of the male contacts in the female contacts shall not be affected by the method of mounting theaircraft fixed connector. NOTE 2On pressurized mountings, this surface shall be suitabletoenable a sealed joint to be made, when the shroud is passe
31、d through the aircraft structure. NOTE 3Hole dimensions shall be suitable for the particular fixedconnector. Dimension mm in A 41,7 0,8 1.64 0.03 B 38,1 0,4 1.50 0.15 C 19,1 0,4 0.75 0.15 D 11,1 0.437 E 7,92 0.312 F 29,2 1.15 G 12,7 0,13 0.50 0.005 H 41,9 1.650 J 25,4 0,25 1.0 0.01 K a 3,8 0,25 0.15
32、 0.01 L 34,93 1.375 M 47,63 1.875 N 6,5 0.257 P max. 44,5 1.75 a Radius. Figure 5 Basic dimensions for style3A,200Va.c.,400Hz, 3-phase aircraft fixed connector 0 0,05 0 0.002 0 0,05 0 0.002 +0,51 0 +0.02 0 +0,5 0 +0.02 0BS4G 173-2:1985 BSI 12-1999 7 NOTE 1Beyond this point, the overall dimensions sh
33、all not exceedthe envelope shown by the chain line in the plan view. NOTE 2Individual female contacts shall have a maximum radialmovement of0,5mm(0.020in). The fit of the male and female main contacts shall be such as to limit the voltage drop ateach connection, excluding the cable terminations, to
34、the requirements ofISO461-1. Dimension mm in A 46,9 min. 1.846 min. B 20,6 min. 0.812 min. C a 54 2.125 D 4,45 2,5 max. min. 0.175 0.10 max. min. E 54 2.125 F 28,58 0,25 1.125 0.01 G 12,7 0,13 0.50 0.005 H 25,4 0,25 1.0 0.01 J 41,3 0,25 1.625 0.01 K 66,7 2.625 L b 3,2 0,4 0.125 0.015 a Minimum lengt
35、h before any increase in cross-section. b Radius. Figure 6 Basic dimensions for style3B,200Va.c.,400Hz,3-phase ground supply free connector8 blankBS4G 173-2:1985 BSI 12-1999 Publication referred to See national foreword.BS 4G173-2: 1985 ISO 461-2: 1985 BSI 389 Chiswick High Road London W4 4AL BSIBri
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