Superseding
Chinese Name	����ˮ�ַ���� ��Ʒ�����ֵ�
English Name
Chinese Standard Classification
Professional Classification
ICS Classification
Issued on	November 31, 2001
Implemented on	March 01, 2002
Abolished on
Issued by	the Harbin Institute of Large Electrical Machinery and the Professional Standardization Web of Large
Chinese Pages
Word Count	14,000 words

1  Scope

This standard is applicable to conventional hydrogenerators with power greater than 10MW and bulb hydrogenerators.

2  Normative References

The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to this standard.
GB 755-2000 "Rotating Electrical Machines-Rating and Performance"
GB/T 5321-1985 "Measurement of Loss and Efficiency for Large AC Electrical Machines by the Calorimetric Method"
GB/T 10069.2-1988 "Measurement of Airborne Noise Emitted by Rotating Electrical Machinery and the Noise Limits-Survey Method for the Measurement of Airborne Noise"
GB/T 1029-1993 "Test Procedures for Three-phase Synchronous Machines"
GB/T 7894-2001 "Fundamental Technical Specifications for Hydro Generators"
GB/T 16927.1-1997 "High Voltage Test Techniques-Part 1: General Test Requirements"
JB/T 3334-2000 "Brake for Hydraulic Generator"
JB/T 6204-1992 "Specifications for Withstand Voltage Test on Stator Insulation of Large High Voltage AC Machines"
JB/T 7023-1993 "Specification for Runner Plate Forgings for Hydrogenerators"
JB/T 7608-1994 "Methods and Limits for Testing the Dissipation Factor Tan δ on Winding of High Voltage AC Machine"
JB/T 8660-1997 "Specification for Package, Transportation and Storage of Hydraulic Units"
JB/T 10098-2000 "Impulse Voltage Withstand Levels of Rotating A.c. Machines with Form-wound Stator Coils"
JB/T 10180-2000 "Specification of Elastic-metal-plastic Pad for Thrust Bearings of Hydro-generators"
JB/T 56080-1994 "Grading of Product Quality for Automation Components of Large and Medium Hydraulic Units"
JB/T 56083-2000 "Grading of Product Quality for Excitation System of Large Synchronous Generators"

3  General Provisions

3.1  This standard will be used as the criteria of company product quality assessment, product grading and rating, national examination and product quality manufacturing supervision.
3.2  The hydrogenerator product is classified into qualified product, first-class product and high-class product according to the quality level.
3.3  As the hydrogenerator product fails to be subjected to a complete assembly and a comprehensive test in the manufacturing plant, this standard covers two parts: one is that the items to be inspected in the manufacturing plant (spare parts, subassembly, etc.) are used as the quality grading criteria prior to delivery and the other one is that the product performance items are used as the quality grading criteria of overall complete machine assessment after installation and operation for some time.
3.4  The spare parts and positions not listed in this standard must also be manufactured and inspected according to the drawing process requirements and inspection codes.

4  Grading of Product Quality

4.1  Qualified product
4.1.1  Use performance and structure
It is confirmed that the product performance reaches the requirements of the current standard through design review and product identification.
4.1.2  Operating performance
The main performance of the product reaches the qualified product index specified in Table 1 and other performances meet the requirements of the relevant technical standards and product technical specifications.
4.1.3  Reliability and service life
Under the condition of correct keeping, installation and maintenance by the user, the equivalent availability factor, equivalent forced outage rate, major repair interval and service life before decommissioning of the product reach the qualified product index specified in Table 1.
4.1.4  Completeness
4.1.4.1  The auxiliaries of the product, including excitation system and automation components shall meet the qualified product requirements in JB/T 56083 and JB/T 56080 respectively, and the purchased and outsourced supporting parts of the product must reach the qualified product level.
4.1.4.2  The accompanying spare parts shall be capable of exchanging with the product. The spare parts, special tools and accompanying documents shall be complete.
4.1.5  Package