IEC 60132-3A:1965
(Main)Rotary wafer switches (low current rating) - Part 3: Rotary wafer switches with two-hole mounting - First supplement
Rotary wafer switches (low current rating) - Part 3: Rotary wafer switches with two-hole mounting - First supplement
Gives order sheets to be completed when ordering a rotary wafer switch in accordance with IEC 60132-3.
Commutateurs rotatifs (à faible intensité nominale) - Troisième partie: Commutateurs rotatifs à deux trous de fixation - Premier complément
Propose des formulaires à remplir pour la passation de commandes de commutateurs rotatifs à galettes conformes à la CEI 60132-3.
Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section 3: Seismic tests
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section 3: Seismic testsRelais électriques - Partie 21: Essais de vibrations, de chocs, de secousses et de tenue aux séismes applicables aux relais de mesure et aux dispositifs de protection - Section 3: Essais de tenue aux séismesElectrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section 3: Seismic tests29.120.70RelejiRelaysICS:Ta slovenski standard je istoveten z:IEC 60255-21-3SIST IEC 60255-21-3:1995en01-avgust-1995SIST IEC 60255-21-3:1995SLOVENSKI
STANDARD
SIST IEC 60255-21-3:1995
CODE PRIXPRICE CODENNORMECEIINTERNATIONALEIECINTERNATIONAL255-21-3STANDARDPremière éditionFirst edition1993-09Relais électriques —Partie 21:Essais de vibrations, de chocs, de secousseset de tenue aux séismes applicables aux relaisde mesure et aux dispositifs de protection -Section 3: Essais de tenue aux séismesElectrical relays —Part 21:Vibration, shock, bump and seismic testson measuring relays and protection equipment —Section 3: Seismic tests© CEI 1993 Droits de reproduction réservés — Copyright — all rights reservedAucune partie de cette publication ne peut 'être reproduite niutilisée sous quelque forme que ce soit et par aucun pro-cédé, électronique ou mécanique, y compris la photocopie etles microfilms, sans l'accord écrit de l'éditeur.No part of this publication may be reproduced or utilized inany form or by any means, electronic or mechanical,including photocopying and microfilm, without permissionin writing from the publisher.Bureau Central de la Commission Electrotechnique Internationale 3, rue de Varembé Genève, SuisseCommission Electrotechnique InternationaleFor price, see current catalogueIEC International Electrotechnical CommissionMemayHapoAHan 3neKrporexHH4ecHaFi KoMHCCHR• Pour prix, voir catalogue en vigueurSIST IEC 60255-21-3:1995
255-21-3 © IEC:1993- 3 -CONTENTSPageFOREWORDClause1Scope and object72 Normative references73Definitions93.1Single axis sine sweep seismic test93.2Biaxial test 93.3Biaxial multi-frequency random seismic test113.4 Standard response spectrum
113.5 Damping 113.6 Zero period acceleration 113.7 Random motion sample 113.8 Time-history113.9Strong part of the time-history114Requirements for single axis sine sweep seismic test (method A)114.1Main parameters 114.2 Test apparatus and mounting 134.3 Test severity classes155Requirements for biaxial multi-frequency random seismic test (method B)155.1Main parameters 155.2 Test apparatus and mounting 175.3 Test severity classes195.4Biaxial conditioning19Selection of test severity classes216.1Recommendations for selection of test classes216.2Identification of test method and severity class217 Test procedures 218Criteria for acceptance 23Figures1Multi-frequency broad-band standard response spectrum shape 252Typical time-history253Acceleration versus frequency for the single axis sine sweep seismic test27Annex A - Seismic tests choice criteria 29SIST IEC 60255-21-3:1995
255-21-3 ©IEC:1993– 5 –INTERNATIONAL ELECTROTECHNICAL COMMISSIONELECTRICAL RELAYS —Part 21: Vibration, shock, bump and seismic testson measuring relays and protection equipment —Section 3: Seismic testsFOREWORD1)The IEC (International Electrotechnical Commission) is a worldwide organization for standardizationcomprising all national electrotechnical committees (IEC National Committees). The object of the IEC is topromote international cooperation on all questions concerning standardization in the electrical andelectronic fields. To this end and in addition to other activities, the IEC publishes International Standards.Their preparation is entrusted to technical committees; any IEC National Committee interested inthe subject dealt with may participate in this preparatory work. International, governmental andnon-governmental organizations liaising with the IEC also participate in this preparation. The IECcollaborates closely with the International Organization for Standardization (ISO) in accordance withconditions determined by agreement between the two organizations.2)The formal decisions or agreements of the IEC on technical matters, prepared by technical committees onwhich all the National Committees having a special interest therein are represented, express, as nearly aspossible, an international consensus of opinion on the subjects dealt with.3)They have the form of recommendations for international use published in the form of standards, technicalreports 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 InternationalStandards transparently to the maximum extent possible in their national and regional standards. Anydivergence between the IEC Standard and the correspondin
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