Portable electric tools have a complex variety and are widely used. Handheld electric tools have high mobility and oscillation, making them prone to leakage and other problems. Due to the frequent use of such tools in the grip of human hands, the risk of electric shock is greater. Therefore, special attention should be paid to their handling, use, inspection, and maintenance. Let's take a look at the safety regulations for the use of handheld electric tools together. 1、 According to the "Safety Technical Regulations for Handling, Using, Viewing, and Repairing Handheld Electric Tools" (GB3787-93), hand-held electric tools are divided into three categories based on the different methods of electric shock maintenance:
One type of tool is to avoid electric shock by applying basic insulation and maintenance grounding (grounding) Type 2 tools: Use two layers of insulation or reinforced insulation to avoid electric shock
Three types of tools: choose safe ultra-low voltage power supply and avoid electric shock by preventing voltage higher than safe ultra-low voltage inside the tool. 2、 Reasonable selection based on the environment
In general locations, Class II tools should be used; The outstanding two-layer insulation or external insulation of the tool body is a safe and reliable way to avoid electric shock. If using Class I tools, it is necessary to choose a leakage protector or power supply through a safety barrier transformer; Otherwise, the user must wear insulating gloves or stand on an insulating mat
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