Power systems management and associated information exchange. Data and communications security - Guidelines for handling role-based access control in power systems1 Scope This part of IEC 62351, which is a technical report, addresses the handling of access control of users and automated agents to data objects in power systems by means of role based access control (RBAC) as defined in IEC TS 623518. IEC TS 623518 defines three different profiles to distribute role information and also defines a set of mandatory roles to be supported. Adoption of RBAC has shown that the defined mandatory roles are not always

signal-to-noise ratio

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— information in case of fire or submersion

NOTE Annex A gives guidance on the interpretation of results

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In such cases the shape and dimensions of the weld should be checked

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