1、NORME CE1 INTERNATIONALE IEC INTERNATIONAL STANDARD 1300=2=27 Premire dition First edition 1995-08 Dispositifs dinterconnexion et composants passifs fibres optiques - Mthodes fondamentales dessais et de mesures - Partie 2-27: Essais - Poussire - Ecouiement laminaire Fibre optic interconnecting devic
2、es and passive components - Basic test and measurement procedures - Part 2-27: Tests - Dust - Laminar flow Numro de rfrence Reference number CEI/IEC 1300-2-27: 1995 Numros des publications Depuis le ler janvier 1997, les publications de la CE1 sont numrotes partir de 60000. Publications consolides L
3、es versions consolides de certaines publications de la CE1 incorporant les amendements sont disponibles. Par exemple, les numros ddition 1.0, 1.1 et 1.2 indiquent respectivement la publication de base, la publication de base incorporant lamendement 1, et la publication de base incorporant les amende
4、ments 1 et 2. Validit de la prsente publication Le contenu technique des publications de la CE1 est constamment revu par la CE1 afin quil reflte ltat actuel de la technique. Des renseignements relatifs la date de reconfirmation de la publication sont disponibles dans le Catalogue de la CEI. Les rens
5、eignements relatifs ces rvisions, ltablis- sement des ditions rvises et aux amendements peuvent tre obtenus auprs des Comits nationaux de la CE1 et dans les documents ci-dessous: Bulletin de la CE1 Annuaire de la CE1 Accs en ligne* Catalogue des publications de la CE1 Publi annuellement et mis jour
6、rgulirement (Accs en ligne)* Terminologie, symboles graphiques et littraux En ce qui concerne la terminologie gnrale, le lecteur se reportera la CE1 60050: Vocabulaire Electro- technique International (VEI). Pour les symboles graphiques, les symboles littraux et les signes dusage gnral approuvs par
7、la CEI, le lecteur consultera la CE1 60027: Symboles littraux 2 utiliser en lectrotechnique, la CE1 6041 7: Symboles graphiques utilisables sur le matriel. Index, relev et compilation des feuilles individuelles. et la CE1 60617: Symboles graphiques pour schmas. Publications de la CE1 tablies par le
8、mme comit dtudes Lattention du lecteur est attire sur les listes figurant la fin de cette publication, qui numrent les publications de la CE1 prpares par le comit dtudes qui a tabli la prsente publication. * Voir adresse site web), sur la page de titre. Numbering As from 1 January 1997 all IEC publi
9、cations are issued with a designation in the 60000 series. Consolidated publications Consolidated versions of some IEC publications including amendments are available. For example, edition numbers 1 .O, 1.1 and 1.2 refer, respectively, to the base publication, the base publication incorporating amen
10、dment 1 and the base publication incorporating amendments 1 and 2. Validity of this publication The technical content of IEC publications is kept under constant review by the IEC, thus ensuring that the content reflects current technology. Information relating to the date of the reconfirmation of th
11、e publication is available in the IEC catalogue. Information on the revision work, the issue of revised editions and amendments may be obtained from IEC National Committees and from the following IEC sources: IEC Bulletin IEC Yearbook Catalogue of IEC publications On-line access* Published yearly wi
12、th regular updates (On-line access)* Terminology, graphical and letter symbols For general terminology, readers are referred to I EC 60050: International Electrotechnical Vocabulary (IEV). For graphical symbols, and letter symbols and signs approved by the IEC for general use, readers are referred t
13、o publications IEC 60027: Letter symbols to be used in electrical technology, IEC 60417: Graphical symbols for use on equipment. Index, survey and compilation of the single sheets and IEC 60617: Graphical symbols for diagrams. IEC publications prepared by the same technical committee The attention o
14、f readers is drawn to the end pages of this publication which list the IEC publications issued by the technical committee which has prepared the present publication. * See web site address on title page. NORME CE1 INTERNATIONALE IEC INTERNATIONAL 130012-27 STANDARD Premire dition First edition 1995-
15、08 Dispositifs dinterconnexion et composants passifs fibres optiques - Mthodes fondamentales dessais et de mesures - Partie 2-27: Essais - Poussire - Ecoulement laminaire Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-27: Tests - Dust - La
16、minar flow O CE1 1995 Droits de reproduction rserves - Copyright - all rights reserved Aucune partie de cette publication ne peut any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organization li
17、aising with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of the IEC on technical matt
18、ers, prepared by technical committees on which all the Ntaional Committees having a special interest therein are represented, express, as nearly as possible, an international consensus of opinion on the subjects dealt with. 3) They have the form of recommendations for international use published in
19、the form of standards, technical reports or guides and they are accepted by the National Committees in that sense. 4) In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national a
20、nd regional standards. Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter. International Standard IEC 1300-2-27 has been prepared by sub-committee 868: Fibre optic interconnecting devices and passive components, of I E
21、C technical committee 86: Fibre optics. I 86B/564/D IS I 86B/651/RVD I Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. IEC 1300 consists of the following parts under the general title Fibre optic interconnecting devi
22、ces and passive components - Basic test and measurement procedures: - Part 1: General and guidance - Part 2: Tests - Part 3: Examinations and measurements -4- 1300-2-270 CEI: 1995 DISPOSITIFS DINTERCONNEXION ET COMPOSANTS PASSIFS FIBRES OPTIQUES - MTHODES FONDAMENTALES DESSAIS ET DE MESURES - Partie
23、 2-27: Essais - Poussire - Ecoulement laminaire 1 Gnralits 1 . 1 Domaine dapplication et objet Lobjet de la prsente partie de la CE1 1300 est de dterminer les effets de la poussire sur les dispositifs fibres optiques. . 1.2 Description gnrale Le spcimen est soumis la concentration de poussire spcifi
24、e, dans une chambre de conditionnement lintrieur de laquelle on fait circuler lair pendant un temps donn. 2 Matriel Lappareillage comprend les lments suivants. 2.1 Chambre dessai La chambre dessai doit tre capable de contrler la concentration de la poussire, la vitesse, la temprature et lhumidit de
25、lair charg de poussire. La chambre dessai doit tre capable de supporter une lvation de temprature maintenue 63 OC f 2 OC, avec une humidit relative ne dpassant pas 60 %. Pour fournir une circulation adquate de lair charg de poussire, le spcimen dessai ne doit pas occuper plus de 50 Yo de la superfic
26、ie de la section (normal lcoulement dair) et plus de 30 Yo du volume de la chambre. Lair charg de poussire doit tre introduit dans la chambre de manire permettre son coulement de devenir presque laminaire avant de frapper le spcimen dessai. 2.2 Poussire La poussire doit pouvoir passer travers un cri
27、ble de 150 pm douverture. 3 Procdure Le spcimen doit tre prpar conformment la spcification particulire. Sauf indication contraire, le spcimen doit tre soumis lessai en conditions de repos. 3.1 Placer le spcimen dans la chambre dessai le plus prs possible du centre de la chambre dessai. Si lon doit e
28、ssayer plusieurs spcimens, il doit y avoir une distance minimale de 100 mm entre les surfaces des spcimens et nimporte quel autre objet ou matriau qui pourrait le protger. Aucune surface du specimen dessai ne doit se trouver plus prs que 100 mm de nimporte quelle paroi de la chambre dessai. Le spcim
29、en dessai doit tre orient de faon exposer les parties les plus critiques ou vulnrables lcoulement de poussire. Tout changement de lorientation du spcimen pendant lessai doit tre spcifi dans la spcification particulire. 1300-2-27 O I EC: 1995 -5- FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPON
30、ENTS - BASIC TEST AND MEASUREMENT PROCEDURES - Part 2-27: Tests - Dust - Laminar flow 1 General 1.1 Scope and object The purpose of this part of IEC 1300 is to determine the effects of dust on fibre optic devices. 1.2 General description The specimen is exposed to a specified dust concentration with
31、in a conditioning chamber in which the air is circulated over a period of time. 2 Apparatus The apparatus consists of the following elements. 2.1 Test chamber The test chamber shall be capable of controlling the dust concentration, velocity, temperature, and humidity of the dust-laden air.“ shall be
32、 capable of being raised to and maintained at a temperature of 63 OC f 2 OC with a relative humidity not exceeding 60 Yo. In order to provide adequate circulation of the dust-laden air, no more than 50 o/o of the cross- sectional area (normal to the air flow) and no more than 30 Yo of the volume of
33、the chamber shall be occupied by the test specimen. The dust-laden air shall be introduced into the chamber in such a manner as to allow it to become approximately laminar in flow before it strikes the specimen. 2.2 Dust The dust shall be capable of passing through a sieve of 150 pm aperture. 3 Proc
34、edure The preparation of the specimen shall be in accordance with the detail specification. Unless otherwise specified, the specimen shall be subjected to the test in a non-operational mode. 3.1 Position the specimen as near to the centre of the test chamber as practicable. If more than one specimen
35、 is being tested, there shall be a minimum clearance of 100 mm between surfaces of the specimens and any other object or material which would provide protection. No surface of the test specimen shall be any closer than 100 mm to any wall of the test chamber. The test specimen shall betorientated to expose the most critical or vulnerable parts to the dust stream. Changes in specimen orientation during the test shall be specified in the detail specification.
