Scope
This standard specifies general requirements for safety of small and medium size rotating electrical machines (motor and generator, hereinafter referred to as electrical machines) for general purpose.
This standard is applicable to small and medium size rotating electrical machines for general purpose. For small-power motors produced according to GB/T 5171, GB 12350 may also be adopted as the basis for assessment.
The general requirements for safety of other electrical machines may be used for reference.
2 Normative References
The following documents for the application of this document are essential. For dated reference, just dated edition applies to this document. For undated references, the latest edition (including any amendments) applies to this document.
GB 755-2008 Rotating Electrical Machines-Rating and Performance
GB/T 825-1988 Lifting Bolt
GB 1971-2006 Rotating Electrical Machines - Terminal Markings and Direction of Rotation
GB/T 2423.4-2008 Environmental Testing for Electric and Electronic Products - Part 2: Test method - Test Db: Damp Heat, Cyclic (12h+12h Cycle)
GB/T 2423.55-2006 Environmental Testing for Electric and Electronic Products -Part 2 : Test Methods - Test Eh: Hammer Tests
GB/T 2900.25-2008 Electrotechnical Terminology - Rotating Electrical Machines
GB/T 4207-2012 Method for the Determination of the Proof and the Comparative Tracking Indices of Solid Insulating Materials
GB/T 4942.1-2006 Degrees of Protection Provided by the Integral Design of Rotating Electrical Machines
GB/T 5169.11-2006 Fire Hazard Testing for Electric and Electronic Products - Part 11: Glowing/Hot-wire Based Test Methods - Glow-wire Flammability Test Method for End-products
GB/T 5169.12-2006 Fire Hazard Testing for Electric and Electronic Products - Part 12: Glowing/Hot-wire Based Test Methods - Glow-wire Flammability Test Method for Materials
GB/T 5169.16-2008 Fire Hazard Testing for Electric and Electronic Products - Part 16: Test Flames - 50W Horizontal and Vertical Flame Test Methods
GB/T 5169.21-2006 Fire Hazard Testing for Electric and Electronic Products - Part 21: Abnormal Heat - Ball Pressure Test
GB/T 7354-2003 Partial Discharge Measurements
GB/T 8170-2008 Rules of Rounding Off for Numerical Values & Expression and Judgment of Limiting Values
GB/T 12113-2003 Methods of Measurement of Touch Current and Protective Conductor Current
GB/T 13002-2008 Rotating Electrical Machines - Thermal Protection
GB/T 13394-1992 Letter Symbols to be Used in Electrical Technology - Symbols for Quantities to be Used for Rotating Electrical Machines
GB/T 16422.2 1999 Plastics - Methods of Exposure to Laboratory Light Sources - Part 2: Xenon-arc Sources
GB/T 17948.1-2000 Rotating Electrical Machines - Functional Evaluation of Insulation Systems - Test Procedures for Wire-wound Windings - Thermal Evaluation and Classification
GB/T 17948.2-2006 Functional Evaluation of Insulation Systems for Rotating Electrical Machines - Test Procedures for Wire-wound Windings - Classification of Changes and Insulation Component Substitutions
GB/T 17948.3 2006 Functional Evaluation of Insulation Systems for Rotating Electrical Machines - Test Procedures for Form-wound Windings - Thermal Evaluation and Classification of Insulation Systems Used in Machines up to and including 50 MVA and 15 kV
GB/T 20111.3-2008 Electrical Insulation Systems - Procedures for Thermal Evaluation - Part 22: Specific Requirements for Encapsulated-Coil Model - Wire-Wound Electrical Insulation System (EIS)
GB/T 22714-2008 Test Specifications of Interturn Insulation of Form-wound Winding for AC Low-voltage Electrical Machines
GB/T 22716-2008 Test Specification of the Interturn Insulation on Armature Winding for DC Machines
GB/T 22718-2008 Thermal Evaluation Methods of Insulation Systems for High-voltage Electrical Machines
GB/T 22719.1-2008 Interturn Insulation of Random-wound Winding for AC Low-voltage Electrical Machines - Part 1: Test Methods
GB/T 22719.2-2008 Interturn Insulation of Random-wound Winding for AC Low-voltage Electrical Machines - Part 2: Test Limits
GB/T 22720.1-2008 Rotating Electrical Machines - Qualification and Type Tests for Type I Electrical Insulation Systems Used in Rotating Electrical Machines Fed from Voltage Converters
GB/T 23642-2009 Electrical Insulating Materials and Systems - Electrical Measurement of Partial Discharges (PD) under Short Rise Time and Repetitive Voltage Impulses
IEC 60027-1: 1997 Letter symbols to be Used in Electrical Technology - Part 1: General
IEC 60034-18-42: 2008 Rotating Electrical Machines - Part 18-42: Qualification and Acceptance Tests for Partial Discharge Resistant Electrical Insulation System (Type II) Used in Rotating Electrical Machines Fed from Voltage Converters
IEEE Std 1553-2002 IEEE Trial-Use Standard for Voltage-Endurance Testing of Form-Wound Coils and Bars for Hydro Generators
3 Terminologies and Definitions
For the purposes of this document, the terminologies and definitions defined in GB/T 2900.25-2008 and the following ones apply.
Foreword i
1 Scope
2 Normative References
3 Terminologies and Definitions
4 Marks and Instructions
5 Base and Enclosure
6 Junction Box (Electrical Machine of 750 V or below) and Wiring Device
7 Conduit Bushing and Equivalent Screw Hole
8 Mechanical Assembly
9 Grounding
10 Supply Cord
11 Clearance and Creepage Distance
12 Components
13 Internal Wiring
14 Connecting Piece
15 Electrical Insulation
16 Insulation Structure
17 Brush Holder
18 Wiring Terminal
19 Non-metallic Functional Components
20 Rating Test
21 Thermal Test
22 Touch Current
23 Insulation Resistance
24 Dielectric Strength Test
25 Mechanical Strength Test
26 Protection Test
27 Damp Heat Test
28 Anti-corrosion
29 Electromagnetic Compatibility (EMC)
