scope:

This European Standard specifies the rules for the selection and erection of electrical equipments for protection, isolation, switching and control (hereafter referred to as electrical devices and assemblies) with respect to coordination. This European Standard applies to electrical installations as detailed in HD 60364-1 clause 11.1. This European Standard is intended to provide requirements for the safety of humans, livestock and property against danger and damage which may arise in the reasonable use of electrical installations and to specify rules for the proper functioning of those installations. The rules also cover aspects of continuity of supply of the installation. This part covers coordination in the case of a fault condition (e.g. short circuit, overload, residual currents) and also takes into consideration aspects of HD 60364-1 clause 33.1 relevant to the coordination of electrical devices as follows : - overcurrent protective device (OCPD); - control and protective switching device (CPS); - residual current device (RCD); - contactor and starter; - switch and disconnector. NOTE 1 Coordination of monitoring devices is under consideration. NOTE 2 Reference to the meaning of the acronyms used in this document may be found in Table 57.1. This European Standard does not provide requirements for the selection of an electrical device alone, but 84 provides requirements for the selection of electrical devices to ensure electrical coordination between them.