Q:Why hand grinding sand turbine, electric drill, impact drill and other power tools plug is two, plug is not three plug

In recent years, leakage protection performance and the reliability greatly, has become a standard power supply, reliability of human protection over ground protection to a certain extent, but the impact of grounding protection and leakage protection to human body protection, so many hand-held electric tools to cancel the earthing protection, relying instead on leakage protector. And use the two eye plug.Look at the instructions for the hand-held power tools with two plugs. All require that the power supply be equipped with an electric leakage protector.

Q:How to detect the rotor of power tools?

Rotor inspection. 1) a self made short circuit device can detect damage. 2) you can detect with a pointer type multimeter.

Q:How are the I, II, and III classes of power tools classified?

In accordance with the electric shock protection methods, electrical equipment is divided into the following 4 categories:0 category. The device relies solely on basic insulation to prevent electric shocks. There are no ground terminals on the live conductors of the 0 types of equipment.

Q:Which is good between pneumatic tools and power tools?

The utility model has the advantages of light structure, small size, light weight, small vibration, low noise, flexible operation, convenient control and operation, convenient carrying and use, firmness and durability. Compared with hand tools, the utility model can increase labor productivity by several to several times; the utility model has the advantages of high efficiency, low cost and easy control.

Q:What kind of power tools are hand drills? 1, 2 or 3?

I class: in the prevention of electric shock protection, in addition to relying on basic insulation, but also the need for zero protection.Class II: the tool itself has double insulation or insulation without the need to protect the ground.Class III: Powered by a secure, ultra low voltage power supply, no voltage higher than the safety supply voltage is generated within the tool.The above is the classification of insulation categories.

Q:How are hand powered tools classified into class I, class II, class III?

Nowadays, class I hand held power tools are virtually discontinued. The class II hand-held electric tools are widely used. Class II hand held electric tools are generally used on special occasions such as wet environments, metal containers, etc..

Q:What's the difference between a flashlight and an electric screwdriver?

A flashlight is a drilling tool powered by alternating current or direct current batteries. It is a hand-held electric tool.The main components of a drill are a drill chuck, an output shaft, a gear, a rotor, a stator, a casing, a switch and a cable.Electric torch (pistol drill) -- a tool used for drilling metal, wood, plastics, etc.. When equipped with positive and negative reverse switch and electronic speed regulating device, it can be used as electric screwdriver. Some models are equipped with rechargeable batteries, which can work normally within a certain period of time without external power supply.

Q:What are the commonly used rotor types for power tools?

Concrete vibrator: concrete used for pouring concrete foundations and reinforced concrete members to eliminate porosity and increase strength. The high-frequency disturbing power of the electric direct acting vibrator is driven by an electric motor to rotate the eccentric block, and the motor is powered by an 150Hz or 200Hz intermediate frequency power supply.The planer: used for planing wood or wood structure, mounted on the bench can be used as a small bench plane. The planer cutter shaft by the motor shaft through the belt drive.

Q:Is BOSCH's power tools good or MAKITA's power tools?

MAKITA electric tool features:The utility model has the advantages of small noise, strong power, good performance, long service life, light body, strong and durable, easy operation and convenient repair. The utility model is the necessary high-quality product for professional personnel or amateur DIY personnel.

Q:What is the working principle of power tools?

A direct current motor called a direct current motor. Due to the magnetic field circuit and armature circuit of the different links, can be divided into series motor, motor, compound motor;