GB/T 3883.309-2021 Safety of motor-operated hand-held,transportable and garden tools—Part 309:Particular requirements for transportable mitre saws
GB/T 3883.309-2021 Safety of motor-operated hand-held,transportable and garden tools—Part 309:Particular requirements for transportable mitre saws
Basic Information
Scope
This part of GB 3883 pertains to tools driven by motors or electromagnets:
—— Hand-held power tools (Part 2);
—— Portable power tools (Part 3);
—— Garden tools (Part 4).
Hereinafter referred to as "tools".
The rated voltage of AC single-phase or DC tools shall not exceed 250V, and that of AC three-phase tools shall not exceed 440V. The maximum rated input power shall not exceed 3700W.
This part concerns the hazards caused by tools when people operate them normally and use them in a reasonably foreseeable manner.
Tools with electric heating elements fall within the scope of this part. The requirements for these heating elements are specified in the relevant parts of GB 4706.
For motors that are not isolated from the power grid and whose basic insulation is not designed for the rated voltage of the tool, the requirements are specified in Appendix B. For tools driven by motors powered by rechargeable batteries or electromagnets, and battery packs used for these tools, the requirements are specified in Appendix K. For such tools that can be operated and/or charged directly from the mains or non-isolated power sources, the requirements are specified in Appendix L.
Hand-held power tools that can be installed on a bracket or workbench to be used as fixed tools without any modification to the tools themselves fall within the scope of this part and are specified in Part 3.
This part does not apply to:
—— Tools used in explosive environments (dust, vapor, or gases);
—— Tools for preparing and processing food;
—— Medical tools;
Addition:
This document applies to the following portable mitre saws:
Equipped with toothed saw blades for cutting wood and similar materials, such as plastics and non-ferrous metals (except magnesium), with a saw blade diameter not exceeding 360 mm. Hereinafter referred to as saws or tools.
This document does not apply to mitre saws used for cutting ot