2013NB/T 35010-2013 Specifications for design of relay protection for hydroelectric power plants
2003DL/T 5177-2003 Guide for design of relay protection in hydraulic power plants
DL/T 5177-2003 Guide for design of relay protection in hydraulic power plants was changed to NB/T 35010-2013 Specifications for design of relay protection for hydroelectric power plants.