Commonly used electric tools

Want to a simple introduction and explanation, electrical and instrument is commonly used to help people in a very short period of time for electrical and instrument is commonly used as a simple understanding, hope for the new join the work of the staff help. Since time is limited, some tools of special explanation is wrong, please correct me.
1. Electrician tongs, commonly known as its former vise port shows dentate, mouth shape after the port is scissors. Forcibly hold pliers handle can be pulled out, twisting and cutting operations.
2. The long nose pliers: front thin and long, suitable for some simple operations in the narrow space.
: 3. With a screwdriver to tighten or loosen the small screws, screw driver is composed, cutting head and the handle of the shape of the cutting head, according to the screw DingMao on slot shape is different from a word type screw with a screwdriver, phillips screwdriver, polygon with a screwdriver. Hold the handle when using insert cutting head screw rabbet on DingMao clockwise or counterclockwise budge.
4. YanDianBi (device) : electric operator to detect whether there is voltage conductor of the commonly used tools. The types of commonly used to carry more contact type and non-contact, luminous, a beeping sound, and also has a digital display, ShouBiaoShi, pen type, also have a screwdriver, and 10 kv and above the electroscope, check before electric test it on a charged conductor, 10 kv electroscope is equipped with special high voltage generator for testing the power supply. Normal can be used to test the electric alarm.
5. A multimeter: can be used to measure current and voltage, resistance of the commonly used instrument, display of digital and analog (understand multimeter please stab at http://www.fluke.com/Fluke/cnzh/products/Digital-Multimeters). Mainly by the table body and red and black two pens and and pens and pencil, a rotatable table body the front option switch, voltage, resistance and current can be performed and the corresponding range of choice. When used to put the table first, and then to options and select range, figured out the positive and negative polarity successful holding pens and start measuring.
6. Adjustable wrench: used to tighten or loosen nut, adjustable wrench openings can be adjusted according to the volume of nut. With nuts cooperate close enough to make the edges and corners of nut matting, only suitable for demand is not high, bolt often don't need to remove the occasion.
7. Stay wrench: used to tighten or loosen bolts, is made according to the specifications of the bolt size of fixed size wrench, one end is open, the other end is the plum blossom ring shape. Apply to the bolt often need to remove the occasion, electrical work of the specifications of the commonly used from 6 mm to 32 mm.
8. Clamp type current meter: used for measuring electrical current, he was made according to the principle of transformer is the core can be opened and closed circular ring, the front end of the table is a core pliers, table is suitable for holding ellipsoid body, there are screens and range selector switch among the table body. When measuring current holds core clamp open handle card into the electricity wire loosen the handle core clamp closed after data can be read out by the current in the conductor.
9. Insulation resistance meter: used for measuring the insulation resistance, is between the conductor and insulation layer and a suitable voltage, the resistance is calculated according to the leaked current display again. Different environment and different voltage grade equipment test voltage is different, also different to the requirement of insulation resistance. The types of megger hand megohmmeter, electric and digital high-voltage megohmmeter megohmmeter.
: 10. Thermometer used to measure surface temperature of the equipment, the use of infrared detection, measuring the temperature does not need to direct contact with the equipment.
11. A bridge that is used to measure the dc resistance of the motor coil, divided into his arms and wheatstone bridge.
12. Pressing line clamp: used for wire and terminal crimping
13. Soldering iron: by using the principle of the resistance wire heating, which can dissolve solder wire, solder after solidification separate conductors can be connected together.
14. Allen wrench, different sizes of steel material of the six-party bay 90 degrees, is suitable for tight or loose socket head bolts.
15. Bearing heater: through the principle of eddy current heating bearing thermal expansion easy to make the bearing inner ring set into the motor shaft
16. The relay protection tester: functional tests for relay protection device.
17. Dc withstand voltage system: used for the insulation of dc withstand voltage test motor and transformer dc high voltage generator.
18. Scope: used in voltage and current waveforms of test frequency, amplitude and waveform diagram display.
19. Ac withstand voltage unit: used for the ac withstand voltage test motor and transformer insulation condition of high voltage generator