Shield electric: classification

Every object that connects to the power grid needs power from the switchboards. These activities are carried out in accordance with the standards of technical documentation, as well as the PUE.

The assembly of electrical panels is the final stage of the installation works, which implies not only the installation of the shield itself, but also its equipping with the appropriate "stuffing". Typically, there are installed systems to disconnect the supply lines, as well as elements of automatic control. The electric panel can be represented as a local control unit, which can include various power relays, circuit breakers, grounding and zeroing buses , as well as various automation elements.

Electrical boards have a specific classification. So, distinguish:

- Switchboards.

- Lighting boards.

- Input and distribution panels and devices.

- Shields for electricity metering.

- Distribution points.

- Boxes, jumpers, tires, etc.

Traditionally, the electric shield is completed with everything needed at the plant, where specialized equipment is installed. The quality and reliability of the products must meet high requirements, and therefore directly depend on the accuracy and accuracy of installation.

The main distribution board (MDF) is a device that includes a set of devices for supplying the building with electricity. This device has found wide application in residential, administrative and commercial buildings and facilities, as well as in industrial enterprises and transformer substations. The main switchboard is designed to distribute power throughout the building, as well as to protect against overloads and short circuits of internal and external lines. An electric type of this type can also perform various functions related to the protection in case of emergency power failure, when it is necessary to quickly switch the power to the reserve input.

VRUs are used to receive and transmit electric power. In this case, distribution of power between the receivers is carried out, as well as protection of the installations against short circuits and overloads. The electric type of the switchgear is designed to provide infrequent operational switching on and off of the power circuits. For its placement it is necessary to equip a special room, located directly in the center of the loads.

Automatic reserve input (AVR) is used to restore power to the receivers by attaching a backup power source during the disconnection of the worker, as well as for the subsequent re-inclusion of the source of the working supply. This device has become widespread in the networks of industrial buildings, factories and enterprises, as well as in transport and communication networks to achieve the required level of reliability of supply of electricity to consumers.

When designing the future electrical panel, it is necessary to know the exact number of connections. This serves to determine the overall dimensions of the device, as well as the type and number of protection and control devices in it.