Things to know about electrical cabinets

Things to know about electrical cabinets

What are electrical cabinets, how do electrical cabinets work and how are they classified? Today tudien.org.vn will help you learn about it.
1. What is an electric cabinet?

Electric cabinets contain electrical equipment and electrical equipment such as switches, bridges, transformers, transformers ... in buildings, houses, factories ... usually have rectangular or square shape. location and purpose.
2. Functions of electrical cabinets
Electric cabinets are an indispensable part of any industrial or civil project, from power plants to transformer stations, distribution systems to distributing electricity to households. It is used as a place to install and protect electrical switchgear and control equipment, and is the place to connect and distribute electricity to the building, ensuring the isolation of electrical equipment with the user. electricity during operation.
Electric cabinets can be made of sheet metal or composite with different sizes and thickness depending on the purpose. In normal applications, electrical cabinets are usually coated with electrostatic paint or luminescence with different colors depending on the area of ​​use or requirements of the design.
3. Classification of popular electrical cabinets
Depending on the function, structure and purpose of the cabinet can be divided into the following popular electrical cabinets:
a. Main distribution cabinet for building (MSB)
    The main distribution cabinet is made in accordance with IEC 60439. The cabinet is made of galvanized steel and powder coated. Other parts such as the electric cabinet cover, the side of the cabinet and the back of the cabinet can be easily removed to facilitate the user in the installation and maintenance work.
    Arranging the equipment inside the cabinet can be adapted to the needs of the customer from the cabinet. Cabinets are designed for use in the home to distribute power to high capacity loads with the advantage of being modularly designed side by side to form an electrical distribution system including inlet, and prevents distribution.
b. Central control cabinet
    Central control cabinets can be provided both types:
    Fixed type.
    Type is not fixed (may be pulled back)
    Devices used inside the cabinet include soft starters, inverters, direct starters, star-delta starters, transformer starters and protection devices, programmable logic control and display.
    Frames and covers are made of galvanized steel and finished with electrostatic paint. Control cabinets and industrial engine protection, irrigation ... Electric cabinets have the mechanism of operation as follows:
    On-site or remote operation for turning, reversing rotation for motors.
    Operate locally or remotely to change engine speed.
c. Switchboard - ATS
Electric cabinets are used in places where extra loads require uninterrupted power supply to supply electricity when there is trouble on the mains source, which is used as a backup power source. In the case of ATS cabinets, the task is to automatically switch the power supply from the grid to a backup power source to supply the power to the operating load.
    Rated voltage: 380 / 415V
    Rated current: 1600A / 2000A / 3200A / 6300A
    Switching time: 5 ~ 10s
d. Distribution cabinet (DB cabinet)
    Cabinets are designed for use in factory workshops or for distribution to a floor in a building. Therefore, the distribution cabinet is designed lightweight, high aesthetics, safe and convenient operation.
    DB cabinets are designed to facilitate the selection for use in the building. This cabinet is divided into blue, red, yellow, this will make the installation easy, convenient as well as repair maintenance later.
e. Electric fire alarm
    Firefighting is an extremely important issue in any field or business: their school, hospital, or even household. Hazards from fire and explosion hazards can occur at any time without careful preparation. The fire alarm system was born to make the fire protection system more secure.
    Operational principle of the fire-extinguishers: The fire extinguishers are placed in automatic mode, operating according to a specific process.
    First, electric cabinets will automatically operate the pump, if the fire protection system is leaking water.
    Second, when fire alarm, fire hose openers, fire protection cabinets will automatically operate the electric pump.
    Third, electric cabinets automatically operate gasoline pump, fuel needed in the fire alarm, open fire hydrant fire.
    Finally, the fire panel is automatically charged and informs the current battery status for the user.
+ Supply Voltage: 3P-380V
+ Phase indicator light
+ Current measurement, voltage
+ Report loss phase
+ IP20 standard - IP54
+ Cabinet thickness 2mm, powder coated
f. Lighting control cabinet

Lighting control cabinets for lighting systems in public areas such as streets, urban areas, flower gardens, parks, bridges ... or in commercial centers, buildings rooms, apartments, hospitals, schools, airports, stadiums ...
    Size depends on the principle diagram will have a suitable design.
    Standard IP20-IP54
    Cabinet thickness 2mm, powder coated
    In conjunction with the time relay is set to turn on, turn off the lighting equipment for a predetermined time.
g. Compensatory housings
The cabinet is used to compensate the load in the workshop production line, the large commercial load, the capacity of up to 600 kVAR. The method of adjusting capacitance and protection capacitors meet the requirements of customers.