Standards

This document specifies the general requirements and tests for safety devices for fuel gases and oxygen or compressed air which do not incorporate a flame (flashback) arrestor used downstream of manifold, cylinder and/or pipeline outlet regulators, and upstream of blowpipes for welding, cutting and allied processes. This document does not specify the location of these devices in the gas system. This document is not applicable to safety devices which incorporate a flame arrestor, covered by ISO 5175-1.

This International Standard describes the fundamentals of product certification and provides guidelines for understanding, developing, operating or maintaining certification schemes for products, processes and services. It is intended for use by all with an interest in product certification, and especially by certification scheme owners.

NOTE 1 In this International Standard the term “product” can also be read as “process” or “service”, except in those instances where separate provisions are stated for “processes” or “services”. Definitions of product, process and service are given in ISO/IEC 17065.

NOTE 2 The certification of products, processes and services is a third-party conformity assessment activity (see ISO/IEC 17000) carried out by product ertification bodies. The requirements for product certification bodies are specified in ISO/IEC 17065.

This part of IEC 61850 specifies the information model of devices and function related to substation applications . IN particular , it specified the compatible logical mode names and data names for communication between intelligent . Electronic devices (IED) . This includes the relationship between logical nodes ands data.