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The three classification and use precautions of electrician's pliers.
(Summary description)Thecommonlyusedelectricalpliershavewirepliers,wirestrippersandnosepliers. 1.Wireclamp: Wirecutterisakindofclampingandcuttingtools,itsUSESmany:jawtohingeorcurvedpliersheadclampswirethread,toothmouthu
(Summary description)
Thecommonlyusedelectricalpliershavewirepliers,wirestrippersandnosepliers. 1.Wireclamp: Wirecutterisakindofclampingandcuttingtools,itsUSESmany:jawtohingeorcurvedpliersheadclampswirethread,toothmouthu
Information
The commonly used electrical pliers have wire pliers, wire strippers and nose pliers.
1. Wire clamp:
Wire cutter is a kind of clamping and cutting tools, its USES many: jaw to hinge or curved pliers head clamps wire thread, tooth mouth used to rotate the nut, cutting blade used for wire or soft wire insulation, Zha mouth used to Zha hard wire cutting.
Precautions for use of wire clamp:
1. The insulation sheath of the wire pliers is generally 500V, and the insulation performance of the handle is good when used. If the insulation is damaged, electric shock will occur when conducting live operation.
2. When charged, the distance between the hand and the metal part should be no less than 2cm to ensure the safety of the person.
3. When cutting live wire, it is strictly forbidden to cut the phase line and neutral line at the same time, or cut two phase lines at the same time, so as to avoid short circuit accidents.
4. The clamp shaft should always be refueled to prevent rust.
2. Pointed nose pliers:
The tip of the nose pliers can be used in small space operations, and the pointed nose pliers also have two kinds of iron handle and insulated handle. The pressure of the insulated handle is 500V.
Points to note with the tip of the nose:
1. When the insulated handle is damaged, it shall not be used to cut live wire.
2. To ensure safety, the distance between the hand and the metal part should be no less than 2cm.
3. The clamps are relatively pointed and heat treated, so the clamps should not be too large, and should not be too strong in case of damage to the tongs.
4. Pay attention to the moisture-proof, and the clamping shaft should always be refueled to prevent rust.
3. Stripping pliers:
Stripping pliers is used for removal of cross-sectional area of 6 square millimeter of plastic or rubber insulated wire insulation layer of special tools, it consists of two parts, nipper plier head and handle, clamp head part consists of line pressing mouth and incision, divided into multiple incision in diameter, 0.5 3 m for exploitation of different specifications of the conductor.
Matters needing attention using strippers:
1. The diameter of the selected incision must be larger than the core diameter, that is, the wire must be cut on the incision larger than the diameter of the core, and no small incision should be used to strip the large diameter wire to avoid cutting the core wire.
2. The stripping pliers should not be used as wire pliers to avoid damage to the incision.
3. In case of electric operation, check whether the handle insulation is good to prevent electric shock.
Cautions for the use of electric pliers.
1. Before measuring, the rubber insulation of the clamping iron core should be inspected first, and the clamps should be clean and rustless, and there is no obvious gap after closure.
2, measurement, the measured current size should be estimated, selecting the appropriate range, if can't estimate, can choose bigger range first, and then by reducing, converted to the appropriate gear, gear conversion range, must under the condition of no charge or in the case of jaw open, because in the process of measuring switch gear, can make the secondary side open in the switching moment, instrument damage or endanger personal safety.
3, should be in the absence of thunderstorms and the dry weather using clip-on table measurement, can be carried out by two people, one person one operation monitoring, measurement should be paid attention to when wearing ppe, pay attention to the human body keep enough safety distance with live part.
4. When measuring, the measured wire should be placed in the middle of the pliers. If there is noise in the combination surface of the jaws, it should be re-opened once, and there is still noise. The combination surface should be processed to make the reading accurate. Also, do not clamp two wires at the same time.
Under five, measuring 5 a current, to get more accurate readings, when conditions permit, can will lead more around in circles, into the jaw measurement, the actual current value shall be the instrument readings divided by the number of wires in the jaw.
6. If the small current is measured immediately after measuring the large current, the iron core should be opened several times to eliminate the residual magnetism in the core and reduce the error.
7. Before and after each measurement, the switch switch of regulating current range should be placed in the highest gear, so as to avoid the damage of the instrument due to the measurement without the selection range.
8, clip-on ammeter, unlike ordinary ammeter, which consists of current transformer and ampere meter, can be in open circuit measurement under the condition of the load current, but only in the line voltage to be measured under the condition of use no more than 500 v.
The treatment of the rust of the electrician's pliers.
The common electrician electrical pliers are often due to reasons such as rust is not open his mouth, difficult to use, here is a simple processing method, the electrician tongs in the washing powder in water, soak a few minutes, and then several electrical activity in the water, until the electrician tongs activities freely, finally out of the electrician tongs quickly dried in the sun, in order to avoid rusting again, I tried many times, the effect is very good.
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