2014DL/T 507-2014 Start-up test code for Hydro-generating units
2002DL/T 507-2002 Start-up test code for hydraulic-turbine and generator units
1970DL 507-1993 Regulations for start-up test of hydro-generator set
DL 507-1993 Regulations for start-up test of hydro-generator set was changed to DL/T 507-2002 Start-up test code for hydraulic-turbine and generator units.