This standard specifies the on-site inspection content, requirements, methods and conditions required for the inspection of single-phase ground fault line selection devices and secondary circuits of small current grounding systems. This standard is applicable to the on-site inspection of single-phase ground fault line selection devices (hereinafter referred to as devices) in small current grounding systems of 66kV and below. Other equipment with single-phase ground protection or line selection functions can be implemented as a reference.
T/CSEE 0055-2017 history
2018T/CSEE 0055-2017 Inspection rules for line selection device for single-phase grounding fault in small current grounding system