SN EN 60947-5-4 : 1997
Current
The latest, up-to-date edition.
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 5: CONTROL CIRCUIT DEVICES AND SWITCHING ELEMENTS - SECTION 4: METHODS OF ASSESSING THE PERFORMANCE OF LOW-ENERGY CONTACTS - SPECIAL TESTS
12-01-2013
INTRODUCTION
1 Scope and object
2 Normative references
3 Definitions and list of symbols used
3.1 Definitions
3.2 List of symbols used
4 General principles
5 General test method
6 General characteristics
6.1 Measurement methods
6.2 Sequences of operations
6.3 Electrical characteristics
6.4 Characteristics of operation
7 Characterization of defects
7.1 Basic method
7.2 Monitoring the load (figure 3)
8 Ambient conditions
8.1 Normal conditions
8.2 Preconditioning
8.3 Particular conditions
9 Methods of reporting
9.1 Failure criterion
9.2 Reporting the failure rate
10 Information to be provided in the test report
Annex A (normative) Information to be supplied by the
manufacturer
Annex ZA (normative) Normative references to
international publications with their
corresponding European publications
Bibliography
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