Insulating clamps are mainly used for the installation and dismantling of fuses in electrical equipment of 35KV and below. The insulation clamp consists of three parts: working clamp、 insulation、 and grip. The clamp should ensure the clamping of the fuse、 and the materials used for each part are the same as the insulation rod. The necessity of preventive testing: The necessity of preventive testing for electrical equipment is to prevent the insulation of electrical equipment from being broken down during operation、 resulting in power outage accidents、 and to ensure the safe operation of the equipment. This is not only necessary for power equipment that has already been put into operation、 but also for newly built or overhauled equipment、 preventive testing is also very necessary. Electrician pliers (wire pliers): Electrician pliers are maintenance tools for electricians. There are two types of steel pliers: iron handle and insulated handle. Steel pliers with insulated sheath are used for electricians. The insulated handle has a withstand voltage of 500V and can be used in electrical situations. Its main purpose is to shear harder metals such as wires and steel wires. The electric wire pliers are composed of two parts: the pliers head and the pliers handle、 and the pliers head is composed of four parts: the pliers mouth、 the teeth mouth、 the knife edge、 and the side mouth. There are many uses、 such as pliers used to bend or clamp wire ends、 teeth used to tighten or loosen nuts、 knife edges used to cut wires or cut the insulation layer of soft wires、 and side edges used to cut hard metals such as wire cores、 steel wires or lead wires. Other electrician pliers: In addition to wire pliers、 electrician pliers commonly used for maintenance include pointed nose pliers、 wire cutting pliers、 and wire stripping pliers. (1) Pointed nose pliers: The head of the pointed nose pliers is thin and long、 suitable for operating in narrow workspace. Maintenance electricians often choose pointed nose pliers with insulated handles、 with a withstand voltage of 500V. (2) Diagonal pliers: also known as wire cutting pliers、 is a pliers used to cut single or multiple strands of wire、 commonly used as a 500V voltage resistant diagonal pliers with an insulated handle. (3) Stripper: A tool used to strip the insulation layer of small diameter wires. Its handle is equipped with an insulated handle and has a withstand voltage of 500V. The pliers of the wire stripping pliers have multiple cutting edges with different apertures ranging from 0.5 to 3mm. When using them、 the length of the insulation layer to be peeled off should be determined according to the needs. According to the diameter of the wire core、 it should be placed into the corresponding cutting edge of the wire stripping pliers. The selected blade should be slightly larger than the diameter of the core wire、 and the insulation layer of the clamp handle wire will be cut off with a strong grip、 and it will automatically pop out. When using、 it should be noted that when placing the wire into the pliers、 it must be placed into a blade slightly larger than the diameter of the wire; Otherwise、 if the cutting edge is too large、 the insulation layer cannot be peeled off、 and if the cutting edge is too small、 the wire will be damaged or cut off. Before using pliers for live operation、 maintenance electricians must check whether the insulation of the insulation handle sleeve is in good condition to prevent insulation damage and electric shock accidents. Precautions for use and storage: 1. Before operation、 the surface of the clamp should be wiped clean with a clean dry cloth; 2. Wear insulated gloves、 boots、 and goggles during operation、 and must operate with the load cut off; 3. Special rainproof clamps should be used for operations in rainy and snowy weather; 4. The insulation clamp should be tested regularly、 using the same method as the insulation rod. The test cycle is one year. During the lO-35kV clamp experiment、 three times the line voltage is applied、 400V is applied to the 220V clamp、 and 260V is applied to the 110V clamp

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