UNE-EN IEC 60255-1:2024

This part of IEC 60255 specifies common rules and requirements applicable to measuring relaysand protection equipment including any combination of equipment to form a distributedprotection scheme for power system protection such as control, monitoring and processinterface equipment to obtain uniformity of requirements and tests. The standards covers maintechnologies used today other emerging technologies will present specific EMC and safetyissues but the philosophy in this document should be applied.All measuring relays and protection equipment used for protection within the power systemenvironment are covered by this document. Other documents in this series can define their ownrequirements which in such cases take precedence. The typical locations for measuring relaysand protection equipment are where protection of electrical equipment is required: generallypower stations, substations and industrial locations.Measuring relays and protection equipment installed in special applications (marine, railways,aerospace, explosive atmospheres, computers, etc.) could be enhanced by additionalrequirements required by that application.