Detail of GB 755-2008

Introduction of GB 755-2008

1 Scope This standard is applicable to all rotating electrical machines except for those electric machines specified in other international and IEC standards, such as IEC 60349. Electric machines specified in this standard may also meet the requirements of other replaced, modified or supplementary international and IEC standards, such as GB 3836 (IEC 60079) and GB/T 7060 (IEC 60092). NOTE If some provisions in this standard must be modified for special purposes such as radiation prevention, then all other provisions, if applicable, are still valid. 2 Normative References The following normative documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments 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 referred to applies. GB/T 156-2007 Standard Voltage (IEC 60038: 2002, MOD) GB/T 755.2-2003 Methods for determining losses and efficiency of rotating electrical machinery from tests (excluding machines for traction vehicles) (IEC 60034-2: 1996, IDT) GB 1971-2006 Terminal markings and direction of rotation of rotating electrical machines (IEC 60034-8: 2002, IDT) GB/T 1993-1993 Cooling methods for rotating electrical machines (eqv IEC 60034-6: 1991) GB/T 2900.25-2008 Electrotechnical Terminology - Rotating Electrical Machines (IEV 50 (411): 1996) GB/T 4026-2004 Basic and safety principles for man-machine interface, marking and identification--Identification of equipment terminals and terminations of certain designated conductors, including general rules for an alphanumeric system (IEC 60445: 1999, IDT) GB 4343.1-2003 Electromagnetic compatibility - Requirements for household appliances electric tools and similar apparatus - Part 1: Emission (CISPR14-1: 2001, IDT) GB 4343.2-1999 Electromagnetic compatibility - Requirements for household appliances electric tools and similar apparatus - Part 2: Immunity-Product family standard (idt, CISPR 14-2: 1997) GB 4706.1-2005 Household and similar electrical appliances-Safety - Part 1: General requirements (IEC 60335-1: 2004, IDT) GB/T 4772.1-1999 Dimensions and output series for rotating electrical machines - Part 1: Frame numbers 56 to 400 and flange numbers 55 to 1080 (idt IEC 60072-1: 1991) GB/T 4772.2-1999 Dimensions and output series for rotating electrical machines - Part 2: Frame numbers 355 to 1000 and flange numbers 1180 to 2360 (idt IEC 60072-2: 1990) GB/T 4772.3-1999 Dimensions and output series for rotating electrical machines - Part 3: Small built-in motors; flange numbers BF10 to BF50 (idt IEC 60072-3: 1994) GB 4824-2004 Limits and Methods of Measurement of Electromagnetic Disturbance Characteristics of Industrial Scientific and Medical (ism) Radio Frequency Equipment (CISPR11: 2003, IDT) GB/T 4942.1-2006 Degrees of Protection Provided by the Integral Design of Rotating Electrical Machines (IP Code) - Classification (IEC 60034-5: 2000, IDT) GB/T 5226.1-2002 Safety of machinery--Electrical equipment of machines--Part 1: General requirements (IEC 60204-1: 2000, IDT) GB/T 6113.101-2008 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods (CISPR 16-1-1: 2006, IDT) GB/T 7064 Requirements for Turbine Type Synchronous Machine(GB/T 7064-2002, neq IEC 60034-3: 1988) GB/T 13394-1992 Letter Symbols to be Used in Electrical Technology--Symbols for Quantities to be Used for Rotating Electrical Machines(eqv IEC 60027-4: 1985) GB/T 17948 (All Parts) Functional Evaluation of Insulation Systems for Rotating Electrical Machines(IEC 60034-18 (All Parts), IDT) GB/T 20113-2006 Electrical Insulation Systems (eis)--thermal Classification(IEC 62114: 2001, IDT) GB/T 20161-2006 Cage Induction Motors when Fed from Converters Application - Guide(IEC 60034-17: 2002, IDT) GB/T 21210-2007 Starting Performance of Single-speed Three-phase Cage Induction Motors (IEC 60034-12: 2002, IDT) GB/T 21211-2007 Equivalent Loading and Super-position Techniques--Indirect Testing to Determine Temperature Rise of Rotating Electrical Machines(IEC 61986: 2002, IDT) JB/T 7062-1993 Semiconductor Converters: Identification Code for Converter Connections(eqv IEC 60971: 1989) JB/T l0098-2000 Impulse Voltage Withstand Levels of Rotating A.c. Machines with Form-wound Stator Coils(IEC 60034-15: 1995, IDT) IEC 60060-1 High-voltage Test Techniques for Low-voltage Equipment - part 1: Definitions, Test and Procedure Requirements IEC 60204-11 Safety of machinery - Electrical equipment of machines - Part 11: Requirements for HV equipment for voltages above 1000 V a.c. or 1500 V d.c. and not exceeding 36 kV IEC 60027-1: 1997 Letter Symbols to be Used in Electrical Technology - Part 1: General IEC 60279: 1969 Measurement of Winding Resistance of Charged A.c. Motors IEC 61293 Marking of Electrical Equipment with Ratings Related to Electrical Supply - Safety Requirements 3 Terms and Definitions For the purposes of this standard, terms and definitions specified in GB/T 2900.25-2008 and the following ones apply to. As regards the cooling and coolant, except for those specified in 3.17~3.22, others shall see GB/T 1993-1993. "Agreement" in this standard refers to "agreement reached between the manufacturer and users". 3.1 Rated value A value is set generally by the manufacturer for the electric machines under prescribed operation condition. NOTE Rated voltage or voltage range refers to terminal rated voltage or voltage range. 3.2 Rating It refers to a group of rated values and operation conditions. 3.3 Rated output It is the output value in the rating. 3.4 Load Values of the total electric quantities and quantities to be used for the machinery are applied to the electrical machines by circuit or machinery at given time. 3.5 No-load (operation) It refers to the rotation regime when the electric machine is in zero power output (others are all normal operation conditions).

Contents of GB 755-2008

Contents Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 Duty 5 Rating 6 Locale Operation Conditions 7 Electrical Operation Conditions 8 Thermal Performances and Tests 9 Other Performances and Tests 10 Nameplates 11 Other Requirements 12 Tolerance 13 Electro Magnetic Compatibility (EMC) 14 Safety Annex A (Informative) Application of S10 Duty and Guideline on Determination of the Relative Expected Thermal Life TL Annex B (Informative) Limit of Electromagnetic Compatibility (EMC)