Grounding bus: main features and characteristics

When organizing the operation of any type of electrical equipment, the basic requirements are always reliability and safety. Only a properly debugged electric network can work efficiently and efficiently. The grounding bus is the most important component of the mains, the purpose of which is to ensure a high level of safety when working with a variety of devices. First of all, such a conductor is used to enter the grounding circuits from various conductive elements of the distribution panel, as well as to organize external security.

ground bus
The device is called grounding, because it outputs a chain of current-conducting wires from all parts of the electrical cabinet and the devices installed in it.

An ordinary grounding bus, or, in other words, a zero bus, is installed, as a rule, on the chassis of mounting cabinets, and it is precisely to this that electrical equipment cases will be connected in the future.

The conductor is positioned vertically on the sides of the electrical cabinet and is fastened with a few bolts.

After installation, all grounding devices must be painted purple.

ground bus
The grounding bus can be installed either in places that are accessible only by specially trained personnel (in this case it can be placed openly), or in those areas that can be accessed by unauthorized persons (then it should be protected with a special shell ) Ideally, it should be installed in a drawer or cabinet, which can be locked with a key.

Grounding of various electrical appliances and devices is carried out in accordance with the state standard, which implies the use of grounding buses of two types: model REC-ET2-M and model REC-ET. The first fixture is carried out directly to the mounting profiles of electrical cabinets and racks and provides the ability to connect 16 or more circuits, and the grounding bus of the second type requires the use of a special organizer, with which subsequently the supply and installation of up to 9 wires will be performed.

grounding bar copper
If we talk about the materials from which this conductor can be made, then copper is most widely used and used. It is from this material, which does not contain any impurities, that the safest ground bus is obtained. The copper base allows one hundred percent protection against the effects of a possible short circuit and helps to completely eliminate the negative effect of atmospheric and static electricity. It is characterized by high thermal conductivity, excellent electrical conductivity, low resistivity, hardness, density and corrosion resistance. The standard cross-section of such a conductor is 3 by 20 mm.

It is important to use copper grounding buses for the installation of electrical cabinets, various technological equipment, ventilation ducts , etc. Such devices are excellently suited for use both indoors and outdoors.

Source: https://habr.com/ru/post/B16887/


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