IEC 60364-5-51:2005

FOREWORD
510 Introduction
511 Compliance with standards
512 Operational conditions and external influences
513 Accessibility
514 Identification
515 Prevention of mutual detrimental influence
516 Measures related to protective conductor currents
Annex A (informative) - Concise list of external influences
Annex B (Annex B of IEC 60364-3) (informative) - Interdependence
        of air temperature, relative air humidity and absolute
        air humidity
Annex C (Annex C of IEC 60364-3) (normative) - Classification
        of mechanical conditions
Annex D (Annex D of IEC 60364-3) (normative) - Classification
        of macro-environments
Annex E (informative) - Permissible protective conductor currents
        for equipment
Annex F (informative) - IEC 60364 - Parts 1 to 6: Restructuring
Bibliography

Deals with the selection of equipment and its erection. It provides common rules for compliance with measures of protection for safety, requirements for proper functioning for intended use of the installation, and requirements appropriate to the external influences foreseen.The main changes with respect to the previous edition are listed below:- corrections of misprints in Table 51 based on Table 321 derived from the old Part 3;- introduction of a new Clause 516 dealing with measures for mitigation of protective conductor currents;- introduction of an informative Annex B extracted from IEC 61140 in Annex E of this standard. Annex B of IEC 61140 deals with protective conductor currents.