2018NB/T 35108-2018 Design specification for distribution devices of gas-insulated metal-enclosed switchgear
2001DL/T 5139-2001 Specification for designing gas-insulation metal-enclosed switchgear of hydropower station
DL/T 5139-2001 Specification for designing gas-insulation metal-enclosed switchgear of hydropower station was changed to NB/T 35108-2018 Design specification for distribution devices of gas-insulated metal-enclosed switchgear.