BS-G-249-1993 ISO-8816-1993.pdf
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1、BRITISH STANDARD AEROSPACE SERIES BS G 249:1993 ISO 8816:1993 Specification for Solid-state remote power controllers General requirements UDC 629.7.064.5:621.316.57 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:31:37 GMT+00:00 2006, Uncontrolled Copy, (c) B
2、SI BS G 249:1993 This British Standard, having been prepared under the direction of the Aerospace Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 July 1993 BSI 01-2000 The following BSI references relate to the work on this standard: C
3、ommittee reference ACE/6 Draft for comment 91/73824 DC ISBN 0 580 22414 7 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technical Committee ACE/6, upon which the following bodies were rep
4、resented: British Airways British Cable Makers Confederation British Rubber Manufacturers Association Civil Aviation Authority (Airworthiness Division) Electronic Components Industries Federation Ministry of Defence Society of British Aerospace Companies Ltd. Amendments issued since publication Amd.
5、 No.DateComments Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:31:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 249:1993 BSI 01-2000i Contents Page Committees responsibleInside front cover National forewordii 1Scope1 2Normative references1 3Definitions
6、1 4General requirements3 5Design characteristics5 6Operating characteristics6 7Environmental conditions and test procedures7 8Qualification7 Figure 1 Timing diagram4 Figure 2 General test set-up17 Figure 3 Test set-up for exponential rise in voltage17 Table 1 Strength of threaded terminals (static v
7、alue of pull and torque)4 Table 2 Strength of threaded terminals Metric units (static value of pull and torque)5 Table 3 Enclosure design5 Table 4 Prospective short-circuit currents7 Table 5 Environmental conditions and test procedures8 Table 6 Qualification tests9 Table 7 Production acceptance test
8、10 List of referencesInside back cover Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:31:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 249:1993 ii BSI 01-2000 National foreword This British Standard has been prepared under the direction of the Aerospace
9、 Standards Policy Committee. It is identical with ISO 8816:1993 Aircraft Solid-state remote power controllers General requirements, published by the International Organization for Standardization (ISO). The Technical Committee has reviewed the provisions of IEC 50(446):1983, ISO 2678:1985 and ISO 33
10、89:1975, 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 provisions of a contract. Users of British Standards are responsible for their correct appli
11、cation. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references International StandardCorresponding British Standard ISO 7137:1987BS 2G 229:1987 Schedule for environmental conditions and test procedures for airborne equipment (Identical) Summary
12、 of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 18, 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 fron
13、t cover. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:31:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 249:1993 BSI 01-20001 1 Scope This International Standard specifies the general design and performance requirements of solid-state (remote) power co
14、ntrollers for use in aircraft electrical power systems. The solid-state (remote) power controller consists of solid-state switching device(s) and associated solid-state circuitry for protection, actioning of control signals, and providing status information. NOTE 1Phrases, clauses and/or sentences i
15、n parentheses are intended to refer strictly to remote power 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
16、standards are subject to revision, and parties to agreements 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.
17、 ISO 2678:1985, Environmental tests for aircraft equipment Insulation resistance and high voltage tests for electrical equipment. ISO 3389:1975, Aircraft Radio frequency flexible coaxial cables Dimensions and electrical characteristics. ISO 7137:1992, Aircraft Environmental conditions and test proce
18、dures for airborne equipment(Endorsement of EUROCAE/ED-14C and RTCA/DO-160C). IEC 50(446):1983, International electrotechnical vocabulary, Chapter 446: Electrical relays. 3 Definitions For the purposes of this International Standard, the following definitions apply. See also IEC 50(446). 3.1 (remote
19、) power controller Device providing 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 sign
20、al applied to the controller. NOTE 3The controller reverts to the OFF state on detection of an electrical overload or other specified condition. 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 condit
21、ion. NOTE 4(The state of the power switch is represented by an indication signal supplied by the controller.) NOTE 5A (remote) power controller may be fully solid-state or hybrid. 3.1.1 solid-state (remote) power controller a (remote) power controller design utilizing solid-state technology exclusiv
22、ely 3.1.2 hybrid remote power controller a remote power controller design utilizing a combination of solid-state and electromechanical technology 3.2 temperature cycling the imposition of extreme high and low temperatures in a repetitive cyclical manner to determine the effect of alternate exposures
23、 to these extremes 3.3 load conditioning the imposition of step function voltage inputs to (remote) power controllers to energize and de-energize the devices at a given duty cycle at maximum rated current 3.4 burn-in the exercise of (remote) power controllers by applying a step voltage input to ener
24、gize the devices for a specified length of time at maximum rated current 3.5 lot all (remote) power controllers covered by a single specification sheet, produced and sealed under essentially the same conditions, and offered for inspection at one time within a period not exceeding one month 3.6 AUX i
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