前言:这是协调CSA集团和UL标准，适用于电动手持工具、可移动工具以及草坪和花园机械——安全——第3-7部分:可移动壁锯的特殊要求。这是CSA C22的第一版。2编号62841-3-7和第一版UL 62841-3-7。本协调标准基于IEC出版物62841-3-7:第一版，电动手持式工具、可移动工具以及草坪和花园机械-安全-第3-7部分:可移动壁锯的特殊要求，该出版物于2020年6月发布。IEC 62841-3-7受IEC版权保护。本标准的制定符合加拿大标准委员会对加拿大国家标准的要求。 CSA集团已将其作为加拿大国家标准发布。范围:单相交流或直流工具的额定电压不超过250V，三相交流工具的额定电压不超过480V。本文件适用于由轨道导向系统引导的可移动壁锯，该轨道导向系统用于干式切割，或连接至液体系统，用于通过金刚石砂轮切割混凝土、石头或类似材料。在额定容量下，金刚石砂轮的额定速度不超过100 m/s的圆周速度。本文件不适用于在进行操作时无人看管的可移动壁锯。 本文件不适用于采用液压系统的可移动壁锯。本文件不适用于手持式切断机。注101手持式切断机将包含在IEC 62841-2的未来部分中。

Preface:This is the harmonized CSA Group and UL Standard forElectric Motor-Operated Hand-Held Tools, Transportable Tools and Lawn and Garden Machinery – Safety – Part 3-7: Particular Requirements for Transportable Wall Saws. It is the First edition of CSA C22.2 No. 62841-3-7 and the First edition of UL 62841-3-7.This harmonized standard is based on IEC Publication 62841-3-7: First edition,Electric Motor-Operated Hand-Held Tools, Transportable Tools and Lawn and Garden Machinery – Safety – Part 3-7: Particular Requirements for Transportable Wall Saws, issued June 2020. IEC 62841-3-7 is copyrighted by the IEC.This standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.Scope:The rated voltage is not more than 250 V for single-phase a.c. or d.c. tools, and 480 V for three-phase a. c. tools.This document applies to transportable wall saws guided by a track guiding system intended for dry cutting or to be connected to a liquid system for cutting concrete, stone or similar material by means of a diamond wheel. The rated speed of the diamond wheel does not exceed a peripheral speed of 100 m/s at rated capacity.This document does not apply to transportable wall saws that are intended to be left unattended while performing an operation.This document does not apply to transportable wall saws that employ hydraulic systems.This document does not apply to hand-held cut-off machines.NOTE 101 Hand-held cut-off machines will be covered by a future part of IEC 62841-2.