How to properly ground the booth
Modern apartments and booths, regardless of that, the stench of the great places or small settlements, full of electrical appliances of various recognition. People should try to win the available benefits of civilization from the general public.
Practically in the skin booth today there is a great set of butt equipment, including large - boilers, cleaning machines, air conditioners, gardening and household manual electric tools, to other - kitchen electrical appliances, televisions, audio-in-wall equipment, household appliances, computers, technics zv'yazku and vіdpochinku.
All this equipment is directly used in the form of electricity, or vicorist for support in the manufacturing station for additional charging attachments. Electrical appliances will make us feel at home - at home, on robots, at large places. It can be said that electricity has permeated our entire neighborhood.
Why do you need grounding
Time for an hour, electricity is a great problem and requires a competent reason for electric shocks. Tsya nebezpeka polagaє in urazhennі electric jet. In the event of a sudden or accidental impact of voltage on the body, or other parts of the outbuildings, as in a normal state, they do not change under the voltage, or they can be mortally unsafe. The grounding of the living house is directed to the intimidation of this insecurity.
The main document, for example, has laid down the vimogi to the grounding, є PUE (Rules for Attachment of Electrical Installations). In this document, two types of grounding are transferred, fallow in the form of a consummated function: robotic and zahisne. It’s better to be grounded to a professional mind, it’s necessary for the minds of buttov to win yoga. Tom was given a chance to look at the well-grounded booth.
Grounding at the old booth
At the old booth, everything looks more foldable. The new butt technology is not connected to the old sockets - the plug is not suitable. On the instructions for the technique, it is indicated that it is categorically fenced off without grounding. It must be brought to light, chi є і in a stan_ grounded in a panel booth, like in an old budіvlі or, more, grounded in a wooden booth. Not long ago, the butov's technique did not seem to be grounded, and the grounding in the old booths was neobov'yazkovim. With the advent of modern technology, the chain of nutrition must be brought up again. The old private booths are especially valued. The most important vipadkiv is grounded at a private booth during the day.
Earthing booth systems
The electric power of the living houses is built only by wires from a dead-earthed neutral. For such measures, DERZHSTANDART R 5051.2-94 regulates grounding for TN and TT circuits.
The peculiarities of the TN system are those that are part of the life, that are grounded, connected from the neutral line by zero conductors. Includes three schemes:
- TN-C. Zero conductors - working and zahisniy - are represented by one conductor on all long-term lines. Everywhere it is widened at the old booths. In this hour it is not recommended to vicorate.
- TN-C-S. It is similar to the TN-C subsystem, but on the introduction into the booths, the splitting of the wild conductor into a null rooster and a zero seperation is carried out. In case of need, it is necessary to add additional grounding of the living house. It is recommended to use TN-C.
- TN-S. Zero conductors - working and zahisny - laying okremo along all long lines. Take care of the most security. Recommended for everyday life. Vimagaє zastosuvannya in a three-phase line of a five-core, and in a single-phase - a three-core cable.
On the front view of the front system in the TT system, the neutral is solidly grounded. For grounding grounding of the dwellers, an earth ground attachment is needed. Zastosuvannya TT system was previously fenced. Now її zastosuvannya can be, but it’s less for the mind to be installed in the ELV booth. At the very least, one at the entrance to the booth. The most economical and economical grounding system for a private booth according to TN-C-S and TN-S schemes.
How to build a grounded booth
In order to make a decision, how to properly build a grounding booth, it is necessary to know that from the grounding systems it was stopped at the power transmission line leading to the booth.
In old systems, the electric supply has a three-phase system with a choti-core cable, and a single-phase system with a two-wire cable. They have a special vein for zahisnogo grounding. And the null vein is grounded by the electric power supply. Tobto, vikoristovuetsya circuit grounding booth TN-C. In most cases, electricity supply was carried out to the houses of the private sector. To that, grounding at a private booth is brought to work anew. If so, it is necessary not only to work the grounding circuit of the call house, which will enter the re-grounding warehouse, but also to rework the internal electrical wiring. As a result, a scheme for grounding a private booth to a TN-C-S station is implemented.
As in the cable leading to your booth, there is a special core for grounding, then it is possible to implement the TN-S scheme. Vikonuvati dodatkovo re-earthing the booth may be needed less if necessary, yogo protection from bliskavki.
To do the grounding of a private booth with your own hands competently and with a rozrahunk for a three-year term of service, it is not obligatory to be a professional electrician.
Let's look at food, like a grounded booth, more than a simple drop. It is obvious that electricity was supplied to your settlement according to the current scheme - with a special duct for zakhisnoy grounding. At this point of the robot, from the grounding, there is less than in the middle of the booth. At the shield where the cable is installed, there may be two tires:
- for zero lived cable;
- for lived zahisnogo grounding.
The zero busbar can be insulated outside the shield body, and the grounding busbar is fixed directly to the body from the safety of the electrical contact. Zero and grounding lived connected to the mains bus. When tsmu z'ednannya between themselves tires categorically zaboronyaєtsya. Connecting to the skin, which requires grounding, can be connected with a three-core cable. The grounding conductor is responsible for connecting to the designated contact. Usі sockets in the booth can be buti from grounding (evro sockets).
In order to supply electricity with a cable without a grounding conductor, it is necessary to split the zero conductor at the entrance shield. At the shield, like before, the faulty buti zero and grounding tires. Ale, in this way, it is necessary to get together with each other. And before the spozhivachіv, like in the first fall, mayut but podvedenі dvі lived - zero and grounding in vіd vіdpovіdnih tyres. This is called the splitting of the zero lived. When this grounding bus is guilty, but it is connected with repeated groundings, as it sporadzhuetsya without a middle bіla boudinka.
How to re-ground
Re-grounding, crazy, necessary for different grounding schemes TN-C-S and TT. If you choose the TN-S scheme, you may need it to add a shield to the blind. Re-grounding is equipped without a middle bіlya booth, which is grounded. Structurally, such grounding includes a grounding device and a grounding conductor. As a grounding vicorist, a metal pin, a fold, a pipe are used. Call out not one, but a sprat of grounders. Most often, three grounding devices are taken, among which the circuit is established like a tricot. The distance between earthing workers can be close to 2 m. She keeps fit horizontal z'єdnuvachі, yakі zvuchay vykonuyutsya zі smugo metal. All grounding devices are connected to each other like a closed circuit. The best way to get it is to get it. A grounding conductor is also laid along the trench along the contour, which connects the grounding loop from the grounding bus at the shield. It doesn't matter to such an attachment to a grounded booth. A better way is to build grounding in a private booth with a variety of typical kits, which are used in industry, for example, ZANDZ-6, or kits for the implementation of typical grounding schemes: "Crow's paw", "Combination grounding", "Closing the loop of the grounding booth".
The supply of such kits guarantees a properly grounded booth and ensures the safety of people for an hour of work with electrical appliances.
