1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 2283:2010Aerospace series Testing ofaircraft wiringBS EN 2283:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 2283:2010. Itsupers
2、edes BS EN 2283:1996 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/6, Aerospace avionic electrical and fibre optictechnology.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not
3、 purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 63472 7ICS 49.060Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStand
4、ards Policy and Strategy Committee on 31 December 2010.Amendments issued since publicationDate Text affectedBS EN 2283:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2283 December 2010 ICS 49.060 Supersedes EN 2283:1996English Version Aerospace series - Testing of aircraft wiring Srie aros
5、patiale - Vrification des cblages daronefs Luft- und Raumfahrt - Prfung der Verkabelung von Luftfahrzeugen This European Standard was approved by CEN on 4 March 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Sta
6、ndard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (Engli
7、sh, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, B
8、ulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE
9、FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2283:2010: EBS EN 2283:2010EN 2283:2010 (E)
10、 2 Contents Page Foreword 3Introduction .41 Scope 42 Normative references 43 Terms and definitions .54 Tests 54.1 General 54.2 Continuity .54.3 Dielectric strength .54.4 Insulation resistance .64.5 Test preparation .65 Procedures .65.1 General 65.2 Testing of wiring in production 85.2.1 Continuity .
11、85.2.2 Dielectric strength .85.3 Testing of assembled and installed bundles 86 Requirements .87 Test report 8BS EN 2283:2010EN 2283:2010 (E) 3 Foreword This document (EN 2283:2010) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enq
12、uiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a nation
13、al standard, either by publication of an identical text or by endorsement, at the latest by June 2011, and conflicting national standards shall be withdrawn at the latest by June 2011. This document supersedes EN 2283:1996. Attention is drawn to the possibility that some of the elements of this docu
14、ment may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard:
15、Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingd
16、om. BS EN 2283:2010EN 2283:2010 (E) 4 Introduction Due to the diversity of aircraft, manufacturing and installing methods for wiring, the tests defined in Clause 1 are carried out at different stages in the manufacturing programme: after assembly of cables into bundles before installation in the air
17、craft; after installation of bundles into the aircraft; after repairs or modifications. 1 Scope This European Standard specifies: the tests for finished wiring, including connectors and, if necessary, terminals, terminal ends, junction boxes, circuit breakers, etc.; these tests do not concern equipm
18、ent installed in the aircraft (see operation of systems and do not apply to the wiring used instrumentation; the requirements for verification of aircraft electrical wiring; continuity of circuits; dielectric strength; insulation resistance. 2 Normative references The following referenced documents
19、are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2282, Aerospace series Characteristics of aircraft electrical supplies EN 61557-2
20、, Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures Part 2: Insulation resistance (IEC 61557-2:2007) EN 61557-4, Electrical safety in low voltage distribution systems up to 1000 V a.c. and 150
21、0 V d.c. Equipment for testing, measuring or monitoring of protective measures Part 4: Resistance of earth connection and equipotential bonding (IEC 61557-4:2007) ISO 2678, Environmental tests for aircraft equipment Insulation resistance and high voltage tests for electrical equipment BS EN 2283:201
22、0EN 2283:2010 (E) 5 IEC 50 (461), International Electrotechnical Vocabulary Chapter 461: Electric cables1)IEC 50 (581), International Electrotechnicla Vocabulary Chapter 581: Electromechanical components for electronic equipment1)3 Terms and definitions For the purposes of this document, the terms a
23、nd definitions given in IEC 50 (461) and IEC 50 (581) apply. 4 Tests 4.1 General For all the tests, the national safety regulations shall be observed. These tests may be carried out manually or on automatic equipment. In this case, the equipment operates with programmable sequences and trip threshol
24、ds. The test shall be stopped as soon as a fault is detected, or the fault shall be memorized. The voltage shall increase or decrease in a regular manner to each of the scheduled values and the measurements shall be made after stabilization. Test equipment is capable of performing the dielectric str
25、ength and the insulation resistance tests in a single operation, according to the requirements laid down in Table 2. 4.2 Continuity The test enables to verify the conformity of cables, bundles and their connections with the design documents. The direct current or alternating current voltage shall no
26、t exceed 28 V. The Test shall be carried out with equipment according to EN 61557-4. The value of the current passed shall not cause damage to any part of the circuits. 4.3 Dielectric strength The test enables to verify the insulation has the operating efficiency to withstand the voltage (limits) gi
27、ven in EN 2282. The maximum voltage rise or drop during test shall not exceed 500 V per second; this will avoid unintended insulation damage. When the permitted leakage current is exceeded, the warning or protection system shall operate to avoid damage to the components being tested. It should be no
28、ted that in alternating current tests, the capacitive leakage currents add (vectorially) to the fault currents detected. After each dielectric strength test, the measurement point shall be grounded in order to discharge the circuit (except when this circuit remains connected to the reference point).
29、 1) Published by: International Electrotechnical Commission (IEC), 3 rue de Varemb, 1211 Geneva 20, Switzerland. BS EN 2283:2010EN 2283:2010 (E) 6 4.4 Insulation resistance The test enables to verify the insulation resistance of the wiring is in a proper state to meet the operating efficiency. The v
30、oltages used for these measurements are between 50 V and 500 V direct current. The Test shall be carried out with equipment according to EN 61557-2. The fault current shall not exceed 5 mA (for a short-circuit). The reading shall not be made until voltage and current stabilization is achieved. 4.5 T
31、est preparation The conductors and screens of screened or coaxial cables shall be tested in the same way as single core cables, provided they are accessible at both ends. The screened cable test, with respect to the ground, shall be carried out before the screens are grounded. The connector shells c
32、overed with conducting protection or other conductive supports shall be grounded. Electronic components housed in junction boxes shall be short-circuited or disconnected. Connectors, switches, circuit breakers, etc. can be left in circuit provided that they can withstand the test. Otherwise the test
33、 voltage shall be decreased. No equipment shall be connected. The parts of circuits having already been brought into contact with flammable liquids or hydraulic fluids shall only be tested when the national safety regulations are observed, so as to avoid any risk of explosion or fire. 5 Procedures 5
34、.1 General The types of wiring, the systems to which they belong and their functions require several categories (see Table 1). Table 1 Categories Description A All wiring apart from specific cases dealt with under B or C B Specific circuits for each type of aircraft to be defined by mutual agreement
35、 between manufacturers and authorities C Screened wiring, in principle isolated from the ground for tests, before being connected to the ground Aircraft wiring presenting installation difficulties and wiring that are not complete and require to be finished in the aircraft shall be subject to test an
36、d inspection after installation (Table 2, Part II). BS EN 2283:2010EN 2283:2010 (E) 7 Table 2 Tests Characteristics Categories (see Table 1) A B C Part I : Tests after manufacture (prior to installation in aircraft) Voltage strength 1 000 V a.c.aor 1 300 V d.c. 380 V a.c. aor 500 V d.c. 40 V a.c. ao
37、r 50 Vd.c. Minimum application time 1 s 0,1 s 0,1 s Minimum insulation resistance Measuring voltage ( 10 %) 500 V d.c. 500 V d.c. 50 V d.c. RH b = 70 % 20 M 50 M 10 M Part II : Tests of assembled bundles (after installation in aircraft) Voltage strength 1 000 V a.c. aor 1 300 V d.c. 380 V a.c. aor 5
38、00 V d.c 40 V a.c aor 50 V d.c. Application time 0,1 s to 1 min 0,1 s to 1 min 0,1 s to 1 min Minimum insulation resistance Measuring voltage ( 10 %) 500 V d.c. 500 V d.c. 50 V d.c. RH b= 70 % 10 M 20 M 2 M RH b 70 % to 80 % 5 M 10 M 1 M aRoot mean square, frequency 50 Hz to 60 Hz. bRelative humidit
39、y. All the tests for wiring shall take place before the connection of equipment. Electrical and electronic components connected within the wiring shall not be exposed to voltages and currents, which could damage them (see 4.5). Dielectric strength and insulation resistance tests shall be carried out
40、 between each conductor and any other conductor, and between each conductor and earth (structure). See Table 2 for conditions and requirements. Tests on pre-assembled wiring shall comply with the requirements in 5.2 and the requirements of Table 2, Part I. Tests on finished wiring (assembled and ins
41、talled) shall comply with the requirements of 5.3 and the requirements of Table 2, Part II. BS EN 2283:2010EN 2283:2010 (E) 8 5.2 Testing of wiring in production 5.2.1 Continuity The test shall be carried out successively on each section of the circuit, suitably established by the control units (swi
42、tches, isolators, etc.). The purpose of the test is not to measure possible voltage drop on line, since this is covered by the functional tests (see EN 2282). 5.2.2 Dielectric strength See Table 2, Part I. The aircraft test specification shall state the value to be applied or the specific circuits t
43、o be subjected to the relevant requirements. The choice of direct current or alternating current can depend on the test devices or national requirements. The use of direct current is recommended and is necessary where the circuit capacity causes leakage currents affecting measurements. 5.3 Testing o
44、f assembled and installed bundles Perform the tests of 5.2. The applicability of these tests, either on the complete aircraft or sub-assemblies, and the specific circuits is defined in the aircraft test specification. The tests are usually carried out by automatic test equipment which, combines the
45、dielectric strength test and insulation resistance measurements. For tests, which are to be repeated, in-service inspection, repair, etc., the voltage values in Part II of Table 2 shall apply with a possible coefficient of reduction (for example 0,8). All the conductors affected by modifications or
46、repairs on a wiring shall be tested. When screens and certain return conductors are finally connected to the aircraft structure, they shall be considered as earth and shall no longer be disconnected. Then they will only be subject to continuity tests. 6 Requirements No deterioration due to breakdown
47、 caused by the insulation material damage or by ionisation shall appear or be detected. If, because of too high wiring capacity the alternating current dielectric strength test results are not satisfactory, the direct current test is valid. The insulation resistance values shall be complied with. 7
48、Test report It shall include the following data: Degree of relative humidity of the environment; The values obtained; BS EN 2283:2010EN 2283:2010 (E) 9 The procedure; The test means; Defects; Possible deviations. This page deliberately left blankThis page deliberately left blankBSI is the independen
49、t national body responsible for preparing British Standardsand other standards-related publications, information and services. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.British Standards Institution (BSI)raising standards worldwideBSI Group Headquarters389 Chiswick High Road London W4 4AL UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 Standards are updated by
