This standard is drafted according to the requirement of Notice on Printing the Development and Revision Planof Professional Standards in 1999 （Document No. 40,1999） issued by the State Economy and TradeCommission.

This standard is a revision one based on DL 507——1993 Start-up Test Code for Hydraulic-Turbine andGenerator Units （short for the original standard hereafter）. The original standard is a summary of start-up testexperiences before 1990 in China. Compared with the original standard, this standard supplements andmodifies the program, items and requirements for start-up test of large and medium hydraulic-turbine andgenerator units with installed capacity 320MW which were put into service after 1991, including the contentsof start-up test for imported large units. Meanwhile, some new test contents are added in this standard,involving with supervisor system, governing system, excitation system, protection system for computer andhigh voltage distribution equipment.

This standard is applicable to the start-up test of turbine and generator for reversible pump storage unitssince many pumped storage power stations have been built and put into service, but the pump start-up test shallbe performed as GB/T 18482——2001 Start-up Test Code for Reversible Pump Storage Units.

This standard is not only the basis for the start-up test of hydraulic-turbine and generator units andelectric-mechanical equipment in the national electric power construction, but also the main assessing contentfor unit putting into operation and handing over.

Appendix A of this standard is informative.

This standard is proposed and explained by and under the jurisdiction of the Standardization TechnicalCommittee for Hydraulic Turbine Generator of the Sector of Electric Power.

Drafting organizations: Sinohydro Corporation, Sinohydro Bureau 4th Co. LTD and Gansu Electric PowerCorporation.

The main drafters: Fu Yuanchu, Ma Junling, Mu Guanhua, Ma Fuliang and Shi Hua.

Translated and examined by Sinohydro Corporation: Fu Yuanchu, Zong Dunfeng, Yao Jinshan, Liu Jing,Zhou Jingli, Chen Jiansu, Li Shisen, Jiang Shude, Wang Jinting, Hu Jianwei, Liu Yongdong and Li Jingshuang.2100433B