This Part of GB 3833 deals with the safety of electric motor-operated or magnetically driven:
– hand-held tools (Part 2);
– transportable tools (Part 3);
– lawn and garden machinery (Part 4).
The above listed categories are hereinafter referred to as “tools” or “machines”.
The rated voltage is not more than 250 V for single-phase a.c. or d.c. tools, and 440 V for three-phase a.c. tools. The rated input is not more than 3700 W.
This standard deals with the hazards presented by tools which are encountered by all persons in the normal use and reasonably foreseeable misuse of the tools.
Tools with electric heating elements are within the scope of this Part. The requirements for these heating elements are specified in the relevant part of GB 4706.
Requirements for motors not isolated from the supply, and having basic insulation not designed for the rated voltage of the tools, are given in Annex B. Requirements for rechargeable battery-powered motor-operated or magnetically driven tools and the battery packs for such tools are given in Annex K. Requirements for such tools that are also operated and/or charged directly from the mains or a non-isolated source are given in Annex L.
Hand-held electric tools, which can be mounted on a support or working stand for use as fixed tools without any alteration of the tool itself, are within the scope of this Part and thus covered by the relevant Part 3.
This Part does not apply to:
– tools intended to be used in the presence of explosive atmosphere (dust, vapour or gas);
– tools used for preparing and processing food;
– tools for medical purposes;
Note 1: GB 9706 series, GB 10793 and GB 11243 covers a variety of tools for medical purposes.
– tools intended to be used with cosmetics or pharmaceutical products;
– heating tools;
Note 2: GB 4706.41 covers a variety of heating tools.
– electric motor-operated household and similar electrical appliances;
Note 3: GB 4706 series covers a variety of electric motor-operated household and similar electrical appliances.
– electrical equipment for industrial machine-tools;
Note 4: GB 5226 series deals with electrical safety of machinery.
– small low voltage transformer operated bench tools intended for model making, e.g. the making of radio controlled model aircraft or cars, etc.
Note 5: Special attentions shall be paid to the additional requirements based on the regulations of local government or special working condition.
2 Normative References
The following documents are indispensable for the application this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 1002-2008 Single Phase Plugs and Socket-Outlets for Household and Similar Purposes—Types, Basic Parameters and Dimensions
GB 1003-2008 Three Phases Plugs and Socket-Outlets for Household and Similar Purposes—Types, Basic Parameters and Dimensions
GB/T 1406.1-2008 Types and Dimensions of Lamp Caps—Part 1: Screw Caps (IEC 60061-1:2005, MOD)
GB/T 1804-2000 General Tolerances—Tolerances for Linear and Angular Dimensions Without Individual Tolerance Indications (ISO 2768-1:1989, EQV)
GB 2099 (all parts) Plugs and Socket-Outlets for Household and Similar Purposes [IEC 60884 (All Parts)]
GB/T 2423.55-2006 Environmental Testing for Electric and Electronic Products—Part 2 : Test Methods-Test Eh: Hammer Tests (IEC 60068-2-75:1997, IDT)
GB/T 2893.2-2008 Graphical Symbols—Safety Colours and Safety Signs—Part 2: Design Principles for Product Safety Labels (ISO 3864-2:2004, MOD)
GB/T 2893.3 Graphical Symbols—Safety Colours and Safety Signs—Part 3: Design Principles for Graphical Symbols for Use in Safety Signs (GB/T 2893.3—2010, ISO 3864-3:2006, MOD)
GB/T 3667 (all parts) AC Motor Capacitors [IEC 60252 (All Parts)]
GB/T 3956-2008 Conductors of Insulated Cables (IEC 60228:2004, IDT)
GB 4208-2008 Degrees of Protection Provided by Enclosure (IP Code) (IEC 60529:2001, IDT)
GB 4706.1-2005 Household and Similar Electrical Appliances—Safety—Part 1: General Requirements (IEC 60335-1:2001, IDT)
GB/T 4956-2003 Non-Magnetic Coatings on Magnetic Substrates-Measurement of Coating Thickness—Magnetic Method (ISO 2178:1982, IDT)
GB/T 5013.4-2008 Rubber Insulated Cables of Rated Voltages up to and Including 450/750 V—Part 4: Cords and Flexible Cables (IEC 60245-4:2004, IDT)
GB/T 5023.5-2008 Polyvinyl Chloride Insulated Cables of Rated Voltages up to and Including 450/750V—Part 5: Flexible Cables (Cords) (IEC 60227-5:2003, IDT)
GB/T 5169.11-2006 Fire Hazard Testing for Electric and Electronic Products—Part 11: Glow/Hot-Wire Based Test Methods—Glow-Wire Flammability Test Method for End-Products (IEC 60695-2-11:2000, IDT)
GB/T 5169.13-2013 Fire Hazard Testing for Electric and Electronic Product—Part 13: Glow/Hot-Wire Based Test Methods—Glow-Wire Ignition Temperature (GWIT) Test Method for Materials (IEC 60695-2-13:2010, IDT)
GB/T 5169.16-2008 Fire Hazard Testing for Electric and Electronic Products—Part 16: Test Flames—50W Horizontal and Vertical Flame Test Methods (IEC 60695-11-10:2003, IDT)
GB/T 5169.21-2006 Fire Hazard Testing for Electric and Electronic Products—Part 21: Abnormal Heat—Ball Pressure Test (IEC 60695-10-2:2003, IDT)
GB/T 5465.2-2008 Graphical Symbols for Use on Electrical Equipment—Part 2: Graphical Symbols (IEC 60417 DB:2007, IDT)
GB/T 6462-2005 Metallic and Oxide Coatings—Measurement of Coating Thickness—Microscopical Method (ISO 1463:2003, IDT)
GB 7247.1-2012 Safety of Laser Products—Part 1: Equipment Classification and Requirements (IEC 60825-1:2007, IDT)
GB/T 8332-2008 Test Method for Flammability of Cellular Plastic—Horizontal Burning Method (ISO 9772:2001, IDT)
GB 8898-2011 Audio, Video and Similar Electronic Apparatus—Safety Requirements (IEC 60065:2005, MOD)
GB/T 11021-2014 Electrical Insulation—Thermal Evaluation and Designation (IEC 60085:2007, IDT)
GB/T 11918-2001 Plugs, Socket-Outlet and Couplers for Industrial Purposes—Part 1: General Requirements (IEC 60309-1:1999, IDT)
GB/T 11919-2001 Plugs, Socket-Outlet and Couplers for Industrial Purposes—Part 2: Dimensional Compatibility and Interchangeability Requirements for Pin and Contact-Tube Accessories (IEC 60309-2:1999, IDT)
GB/T 12113-2003 Methods of Measurement of Touch Current and Protective Conductor Current (IEC 60990:1999, IDT)
GB 13140.2-2008 Connecting Devices for Low Voltage Circuits for Household and Similar Purposes—Part 2: Particular Requirements for Connecting Devices As Separate Entities with Screw-Type Clamping Units (IEC 60998-2-1:2002, IDT)
GB 13140.3-2008 Connecting Devices for Low Voltage Circuits for Household and Similar Purposes—Part 2: Particular Requirements for Connecting Devices As Separate Entities with Screwless-Type Clamping Units (IEC 60998-2-2:2002, IDT)
GB/T 14472-1998 Fixed Capacitors for Use in Electronic Equipment—Part 14: Sectional Specification—Fixed Capacitors for Electromagnetic Interference Suppression and Connection to the Supply Mains (IEC 60384-14:1993, IDT)
GB 14536.1-2008 Automatic Electrical Controls for Household and Similar Use—Part 1: General Requirements (IEC 60730-1:2003, IDT)
GB 15092.1-2010 Switches for Appliances—Part 1: General Requirements (IEC 61058-1:2008, IDT)
GB/T 16273.1-2008 Graphical Symbols for Use on Equipment—Part 1: Common Symbols (ISO 7000:2004, NEQ)
GB 16754-2008 Safety of Machinery—Emergency Stop Principles for Design (ISO 13850:2006, IDT)
GB/T 16842-2008 Protection of Persons and Equipment by Enclosures—Probes for Verification (IEC 61032:1997, IDT)
GB/T 16855.1-2008 Safety of Machinery—Safety-Related Parts of Control Systems—Part 1: General Principles for Design (ISO 13849-1:2006, IDT)
GB/T 16935.1-2008 Insulation Coordination for Equipment Within Low-Voltage Systems—Part 1: Principles, Requirements and Tests (IEC 60664-1:2007, IDT)
GB/T 16935.3 Insulation Coordination for Equipment Within Low-Voltage Systems—Part 3: Use of Coating, Potting or Moulding for Protection against Pollution (GB/T 16935.3-2005, IEC 60664-3:2003, IDT)
Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 General Requirements 5 General Conditions for the Tests 6 Radiation, Toxicity and Similar Hazards 7 Classification 8 Marking and Instructions 9 Protection against Access to Live Parts 10 Starting 11 Input and Current 12 Heating 13 Resistance to Heat and Fire 14 Moisture Resistance 15 Resistance to Rusting 16 Overload Protection of Transformers and Associated Circuits 17 Endurance 18 Abnormal Operation 19 Mechanical Hazards 20 Mechanical Strength 21 Construction 22 Internal wiring 23 Components 24 Supply Connection and External Flexible Cords 25 Terminals for External Conductors 26 Provision for Earthing 27 Screws and Connections 28 Creepage Distances, Clearances and Distances through Insulation Annex A (Normative) Measurement of Creepage Distances and Clearances Annex B (Normative) Motors not Isolated from the Supply Mains and Having Basic Insulation not Designed for the Rated Voltage of the Tool Annex C (Normative) Leakage Current Annex D (Normative) Electric Strength Annex E (Informative) Methods of Applying GB/T 22696 to Power Tools Annex F (Normative) Rules for Routine Tests Annex G Annex H (Normative) Determination of a Low-power Circuit Annex I (Informative) Measurement of Noise and Vibration Emissions Annex J (Informative) Selection and Sequence of Resistance to Heat and Fire in Clause Annex K (Normative) Battery Tools and Battery Packs Annex L (Normative) Battery Tools and Battery Packs Provided with Mains Connection or Non-Isolated Sources Bibliography
