This document specifies the composition and monitoring methods, technical requirements, test methods, inspection rules and other requirements of the residual current monitoring device of the station low-voltage AC power supply system. This document is applicable to the design, manufacture, selection, ordering and testing of residual current monitoring devices for 400V low-voltage AC power systems using TN-S grounding in substations, converter stations, switching stations and series compensation stations.
T/CEC 703-2022 history
2022T/CEC 703-2022 Technical specification for residual current monitoring device for station low-voltage AC power system