BS G 248-1993 Specification for hybrid remote power controllers - General requirements《混合式遥控功率控制器规范 一般要求》.pdf
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1、BRITISH STANDARD AEROSPACE SERIES BSG248:1993 ISO10296: 1992 Specification for Hybrid remote power controllers General requirements UDC 621.316.57:629.7BSG248:1993 This BritishStandard, having been prepared under the directionof the Aerospace Standards Policy Committee, waspublished under the author
2、ityof the Standards Boardand comes into effect on 15July1993 BSI01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/6 Draft for comment90/78217 DC ISBN 0 580 22193 8 Committees responsible for this British Standard The preparation of this BritishStandard
3、 was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technical Committee ACE/6, upon which the following bodies were represented: British Airways British Cable Makers Confederation British Rubber Manufacturers Association Civil Aviation Authority (Airworthiness Division) Electronic
4、Components Industries Federation Ministry of Defence Society of British Aerospace Companies Ltd. Amendments issued since publication Amd. No. Date CommentsBSG248:1993 BSI 01-2000 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope 1 2 Normative references 1 3 Defin
5、itions 1 4 General characteristics 1 5 Design characteristics 3 6 Operating characteristics 5 7 Environmental conditions and test procedures 8 8 Qualification tests 9 Figure 1 Diagrammatic illustration of a type A hybrid remote powercontroller 4 Figure 2 Diagrammatic illustration of a type B hybrid
6、remote power controller 4 Figure 3 Timing sequence diagram 5 Table 1 Strength of threaded terminals (static value of pull and torque) 2 Table 2 Strength of threaded mounting studs (static value of pull and torque) 3 Table 3 Controller rating and associated wire size for testing 6 Table 4 Endurance t
7、ests for controllers 7 Table 5 Endurance tests for circuit breakers 7 Table 6 Contact voltage drop 7 Table 7 Trip characteristics 7 Table 8 Prospective short-circuit calibration currents 8 Table 9 Environmental conditions and test procedures 8 Table 10 Qualification tests 10 List of references Insid
8、e back coverBSG248:1993 ii BSI 01-2000 National foreword This BritishStandard has been prepared under the direction of the Aerospace Standards Policy Committee. It is identical with ISO10296:1992 Aircraft Hybrid remote power controllers General requirements published by the International Organizatio
9、n for Standardization (ISO). The Technical Committee has reviewed the provisions of ISO2618:1985, to which normative reference is made in the text, and has decided that they are acceptable for use in conjunction with this standard. A British Standard does not purport to include all the necessary pro
10、visions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-reference International Standard Corresponding British Standard ISO7137:1987 BS2G229:1987 Schedule for
11、environmental conditions and test procedures for airborne equipment Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorpo
12、rated. This will be indicated in the amendment table on the inside front cover.BSG248:1993 BSI 01-2000 1 1 Scope This InternationalStandard specifies the general design and performance requirements of hybrid remote power controllers for aircraft. They consist ofan electromagnetic device or a combine
13、d electromagnetic/solid-state device, for load switching, and a solid-state control circuit for control of the load-switching devices. On aircraft, remote power controllers are used to close and open the electrical circuit and to protect wiring and equipment in the event of overload or short-circuit
14、 conditions. The load-switching device and solid-state control circuit may be mounted in a common enclosure or may be discrete inter-connected units. NOTE 1This International Standard recognizes the needtohave hybrid units which are, as far as practical, interface-compatible with fully solid-state p
15、ower controllers. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreem
16、ents based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO2678:1985, Environmental tests for aircraft equipmen
17、t Insulation resistance and high voltage tests for electrical equipment. ISO7137:1987, Aircraft Environmental conditions and test procedures for airborne equipment. 3 Definitions For the purposes of this International Standard, thefollowing definitions apply. 3.1 remote power controller device provi
18、ding a power switch which presents a low impedance to the flow of current from its supply to its load terminal when in the ON state and a high impedance in the OFF state NOTE 2The state of the power switch normally conforms to that represented by the last command signal applied to the controller. NO
19、TE 3The controller reverts to the OFF state on detection ofan electrical overload or other specified condition regardless ofthe command signal. A resetting operation is required to terminate the trip state. Trip-free action prevents the ON state being held in the presence of an overload trip conditi
20、on. NOTE 4The state of the power switch is represented by an indication signal supplied from the controller. NOTE 5A remote controller may be fully solid-state or hybrid. 3.2 hybrid remote power controller combination of an electromagnetic or combined electromagnetic/solid-state device(s), for load
21、switching, and a solid-state control circuit NOTE 6The load-switching device and solid-state control circuit may be mounted in a common enclosure or may be discrete inter-connected units. 3.3 trip-free when a controller has tripped open on overcurrent or on short-circuit, a trip-free feature prevent
22、s subsequent reclosure unless preceded by a reset sequence 4 General characteristics 4.1 Materials Materials shall be used which will enable the controllers to meet the performance requirements ofthis International Standard. Materials used shall not support combustion, giveoff noxious gases in harmf
23、ul quantities, give offgases in quantities sufficient to cause contamination of any part of the controller, or form current-carrying tracks when subjected to any of the tests specified herein. Unless otherwise specified, the selection of materials shall be such as to provide a shelf life of ideally2
24、0years without affecting the operation of the controller. Parts having a significantly shorter life, such as seals, shall be declared. 4.2 Construction Power controllers shall be of design, construction, minimum mass and physical dimensions compatible with requirements. Controllers shall be designed
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