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Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section 3: Seismic tests
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Withdrawn date: 23-07-2013
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Published date: 30-03-1995
Publisher: European Committee for Standards - Electrical
FOREWORD1 Scope and object2 Normative references3 Definitions 3.1 Single axis sine sweep seismic test 3.2 Biaxial test 3.3 Biaxial multi-frequency random seismic test 3.4 Standard response spectrum 3.5 Damping 3.6 Zero period acceleration 3.7 Random motion sample 3.8 Time-history 3.9 Strong part of the time-history4 Requirements for single axis sine sweep seismic test (method A) 4.1 Main parameters 4.2 Test apparatus and mounting 4.3 Test severity classes5 Requirements for biaxial multi-frequency random seismic test (method B) 5.1 Main parameters 5.2 Test apparatus and mounting 5.3 Test severity classes 5.4 Biaxial conditioning6 Selection of test severity classes 6.1 Recommendations for selection of test classes 6.2 identification of test method and severity class7 Test procedures8 Criteria for acceptanceAnnex A (informative) Seismic tests choice criteriaANNEX ZA (normative) OTHER INTERNATIONAL PUBLICATIONS QUOTED IN THIS STANDARD WITH THE REFERENCES OF THE RELEVANT EUROPEAN PUBLICATIONS
Specifies the vibration, shock, bump and seismic tests applicable to electromechanical and static measuring relays and protection equipment, with or without output contacts.
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