The classification of handhold electric power tool

Electric power tool is operating with hand and using fractional electric motor or electromagnet, to working through transmission mechanism. To the protection of electric shock, handhold electric power tool can be divided to three kinds. The first kind of electric shock protection electric power tool not only relies on basic insulation, but also with ad additive safe protection, such as protective grounding, so that the touch current-carrying part will not change to charged body when the basic insulation is destroyed. The second kind of electric shock protection applying a new additive safe protection way, while which not supply protective grounding or not rely on equipment condition, for example, apply with double insulation or strengthen insulation. This electric shock protection has several basic types: A. Electrical insulating material shell type that is the electric power tool with hard and continuous insulation shell. B. The metal shell type. This type has basic continuous metal shell which all applies with double-insulation. If the double insulation cannot work, then we can apply strength insulation. C. The combined type of insulation material and metal shell. The third type of electric power tool is relying on power supply of safe and lowest electric pressure. The so called safe lowest electric pressure means that the electric pressure should not exceed 42V and supply by safe quarantine isolation transformer. With the extensive apply of handhold electric power tool; the importance of electric safe is more outstanding. The using department should formulate the homologous safety operation specification to the handhold electric power tool according to natural standard. The specification content must contains following part: the allow using range of tool, the right using method, operational program, the checking part program before using, the dangers may occurred in using and related safeguard procedures, the storage and maintain method of tool, and things that operators should notice and so on. What’s more, in order to using the electric power in right way, do teach and train operators, serviceman and related people about the safety technology; do pay attention to the checking, protecting of handhold electric power tool. During common operating place, try to using the first type tools, when using the type, you should match with earth leakage protective device, isolation transformer and so on. In wet place, you should use the second and third type of tools. If you want to use electric power tool in boiler, metal container and so on, do use the third type tools. If the electric power tool is using in special environment, like wet, rain or existing with corrosive gas, try using with related protection methods.

Here is my website of electric power tool: www.cn-shibo.com. If you want to know more information, do contact me or click Electric Power Tool.