This section specifies the minimum requirements for over/undervoltage relays. This part includes technical specifications of protection functions, measurement characteristics and time-delay characteristics. This section specifies factors that affect steady-state accuracy and dynamic performance, and also includes test methods to verify performance and accuracy. General requirements for measuring relays and protective devices are in accordance with IEC 60255-1.
GB/T 14598.127-2013 Referenced Document
IEC 60044 Instrument transformers - Part 8: Electronic current transformers
IEC 60255-1 Measuring relays and protection equipment - Part 1: Common requirements*, 2022-12-15 Update
GB/T 14598.127-2013 history
2013GB/T 14598.127-2013 Measuring relays and protection equipment.Part 127:Functional requirements for over/under voltage protection