IEC 61071:2017

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Service conditions
5 Quality requirements and tests
6 Overloads
7 Safety requirements
8 Markings
9 Guidance on installation and operation
Annex A (informative) - Waveforms
Annex B (normative) - Operational limits of capacitors
        with sinusoidal voltages as a function of frequency
        and at maximum temperature ([theta]max)
Annex C (normative) - Resonance frequency measuring
        methods - Examples
Bibliography

IEC 61071:2017 applies to capacitors for power electronics applications. The operating frequency of the systems in which these capacitors are used is usually up to 15 kHz, while the pulse frequencies may be up to 5 to 10 times the operating frequency. The document distinguishes between AC and DC capacitors which are considered as components when mounted in enclosures. This document covers an extremely wide range of capacitor technologies for numerous applications, e.g. overvoltage protection, DC and filtering, switching circuits, energy storage, auxiliary inverters, etc. This second edition cancels and replaces the first edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- Introduction of new terms and definitions;
- clarifications for surge discharge test;
- indications for measuring procedure during thermal stability test;
- clarifications for self-healing test;
- clarifications for endurance test;
- clarifications for destruction test;
- update of normative references;
- general editorial review.