PD IEC/TR 62350:2006

INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General information concerning availability of RCD
   protection
   4.1 Availability of RCD protection
   4.2 Failure of the RCD to operate
   4.3 Failure rate
   4.4 Useful life
   4.5 Available surveys
5 Information related to contribution of products to the
   availability of protection
   5.1 Contribution of compliance with RCD standards
   5.2 Contribution of design and manufacturing
6 Availability of protection in installations fitted with
   RCDs
   6.1 General considerations
   6.2 Recommendations concerning the correct use of the test
        button
   6.3 Recommendations for testing the availability of RCD
        protection within the installation
   6.4 Recommendations concerning the choice and installation
        of RCDs
7 Information related to the installation and use of RCDs
   in the field
   7.1 General considerations and measures concerning harsh
        environment
   7.2 Most significant parameters to take into account
   7.3 Recommendation for selection and installation to avoid
        unwanted tripping of RCDs
   7.4 Relationship between availability of the protection
        and the selection of RCDs
Annex A (informative) General diagram showing contribution
                      to availability of the protective
                      measures
Annex B (informative) Definitions from the IEV
Annex C (informative) Operation of RCDs with possible fault
                      currents
Annex D (informative) Example of use of the test button
Bibliography

Provides an overview of protection availability provided by residual current-operated protective devices (RCDs) complying with IEC standards for household and similar uses. It highlights the main parameters influencing protection reliability and provides information on how to install and operate RCDs in relationship to their environmental conditions after installation.

This technical report provides an overview of protection availability provided by residual current-operated protective devices (RCDs) complying with IEC standards for household and similar uses. It highlights the main parameters influencing protection reliability and provides information on how to install and operate RCDs in relationship to their environmental conditions after installation.

This guide gives general information concerning availability of the protection within the fixed installation and how to keep a high level of availability of protection during use (installation and maintenance). It has been drafted for the benefit of IEC technical committees, installers, inspectors and users.

NOTE 1 The term RCD is a generic term applied to a family of products which open automatically in response to a residual current at or exceeding the RCD’s rated residual operating current, IΔn. This generic term is often applied to the following.

RCCB - Residual Current Circuit Breaker without overcurrent protection

RCBO - Residual Current Breaker with Overcurrent protection

SRCD - Socket outlet Residual Current Device

PRCD - Portable Residual Current Device

A RCCB differs from a RCBO in that the RCBO will additionally respond to overcurrent conditions whereas the RCCB will not respond to such conditions.

NOTE 2 PRCDs are not considered to be part of the fixed installation, and are not covered by this guide.