Every object that connects toelectric grid, needs a feed from the switchboards. These activities are carried out in accordance with the standards of technical documentation, as well as the EEI.
Сборка электрических щитов является the final stage of the installation works, which implies not only the installation of the shield itself, but also equipping it with the appropriate "stuffing". Typically, there are installed systems to disconnect the supply lines, as well as the 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, and 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 by allnecessary at the plant, where the 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,including 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 electricity 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.
ВРУ используются для приема и передачи electrical energy. 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 (ATS) is usedto restore power supply to receivers by attaching a backup power source for the duration of the worker's shutdown, as well as for the subsequent re-inclusion of the source of the working supply. This device has become widespread in 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.
При проектировании будущего электрического щита, 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.
