Grounded and grounded, why is it different?

Directing the movement of charged particles, which is called an electric jet, ensures a more comfortable foundation for a modern person. Without it, there is no practice of everyday fatigue, medical fittings at the liquor stores, there is no calm at the dwelling, idle domestic and international transport. But the electrician, the servant of the people, is less likely to have time to control, if the charging of the electronics can know another way, then the consequences will be deplorable. For the advancement of non-transferable situations, stop by special ones, come in, smut - understand why it is different. Grounding and grounding protect people from being hit by a strum.

Direction of the flow of electronics is fixed by the path of the smallest support. In order to escape the passage of the strum through the human body, it is propagated to you by another straight line from the least expenses, which will ensure grounding and grounding. Why should there be a difference between them?

grounding

The grounded one is one conductor, or I will put together a group of them, who will be interrupted by the earth. With this help, it is possible to climb on the metal casing of the aggregates with a zero support path, tobto. to the ground.

Such electrical installation is more relevant in industry and for butt fittings from steel outer parts. Dotik people to the body of the refrigerator or the machine, which, leaning under the pressure, cannot cause injury with an electric jet. For this purpose, special sockets with a grounding contact are used.

Working principle ELV

For the safe work of the industrial one, the buttovy possession is zastosovuyut, vikoristovuyut fit. Їх the robot is based on a por_vnyann_ electric stream, which enters through the phase wire, and leaves the apartment through the zero conductor.

The normal mode of the work of the electric stake shows the same value of the struma in the names of the lines, the straightening flows in the opposite lines. In order to stink and nadal, they stubbornly chewed their own work, took care of the balanced work of the fittings, fixed the attachments, and the installation of grounding and grounding.

Try to be-yakіy dilyantsі іzolyatsії to bring before the break the struma, which is straight to the ground, through a small place, bypassing the working zero conductor. At the ELV, an imbalance of the struma power is displayed, the attachment automatically mimics the contacts and the voltage is known in all the working circuits.

For a skin-friendly operational mind, transferring different settings for switching on the ELV, call the adjustment range to set from 10 to 300 mA. Attached quickly spratsovuє, turn-on hour become seconds.

Earthing outbuilding robot

In order to connect a grounding attachment to the case of a single-button or industrial property, a PE-conductor is installed, which appears from the shield along the line with a special exit. The design ensures that the body is grounded, which is why it is recognized as grounding. Inspection of grounding in the form of zeroing is due to the fact that the first moment when the plug is connected to the socket is working zero and the phase is not switched at the equipment. Interactions are known to the rest of the wind, if the contact is broken. In such a rank, grounding the corps may be necessary and permanent.

Two ways of vlashtuvannya grounding

Systems of protection and input of voltage are applied to:

• piece:
• natural.

Pieces of grounding are recognized without intermediary for zakhist possession of that people. For the building, I will need horizontal and vertical steel metal later elements (often put pipes with a diameter of up to 5 cm, or coils No. 40 or No. 60 of a winding pipe with a diameter of 2.5 to 5 m). Tim himself is grounded and grounded. The difference lies in the fact that for the vikonnannya yakіsnogo zanulennya needed fahivets.

Natural grounding vicorists are at the time of the next nearest roztashuvannya order with an object or a lifeboat. Like a defender to serve in the soil of pipelines, vikonanі z metal. It is not possible to wink for covering the main line with combustible gases, rivers and pipelines, the outer walls of which are covered with anti-corrosion coatings.

Natural objects serve as a defender of electrical appliances, and win their main recognition. Prior to such a connection, access to the pipelines of a sufficient wide number of services from the judicial services and departments, which creates an unsafe damage to the integrity of the economy.

Zeroing

Krіm is grounded, deyaky vikoristovuyut zanulennya, it is necessary to separate, why is it different. Grounding and zeroing lead to a voltage, only to weaken it in a different way. Another method is to the electrical circuits of the case, in a normal state, not under voltage, but to the introduction of a single-phase electric power supply, a neutral wire of a generator or a transformer, a power supply to a steady stream at its middle point. When the voltage is zeroed, the body is thrown off onto a special rozpodіlny shield or a transformer box.

Zanulennya vikoristovuєtsya in the case of non-transferring voltage strips and breakdown of the insulation to the body of industrial and butt fittings. There is a short hum, which leads to the burnout of the zapobіzhnikov and the mitt automatic shutdown, which has a difference between grounded and grounded ones.

Zeroing principle

Change of three-phase lancets vicorous to be a zero conductor for various purposes. To ensure electrical safety, it is also possible to eliminate the effect of a short circuit, which causes voltage on the case to be at phase potential in critical situations. When this happens, the strum is activated, which changes the nominal indicator of the automatic signal and the contact is attached.

Priya zanulennya

What is the grounding in the ground, you can see the butt of the connection. The hull is rimmed with a dart, and it goes back to zero on a small shield. For this one, in the socket, connect the third core of the electric cable with the terminal passed for this one in the socket. This one has a small amount, which is the one that needs a strum for automatic switching on, a larger one, a lower installation task. If in normal mode, the attachment, which turns on, secures the robot with a strum power of 16 Amperes, then a small sample of the strum continues to turn without turning it on.

After some reason, it became clear that there is a difference between grounded and grounded ones. A human body with an influx of strength struma 50 milliamps can not be seen and the heartbeat is up. Annihilation of such indications in the stream can be eliminated, the fragments of this function influence the creation of vanishings, sufficient for switching on contacts.

Grounded and grounded, why is it different?

Mіzh tsimi two ways іsnuyut vіdminnostі:

• when grounded, the superfluous strum and the voltage, which vibrate on the body, are injected directly into the ground, and when zeroed, they drop to zero at the shield;
• grounding in the most effective way to feed protection against electric shock;
• in case of grounding, the safety goes beyond the fluctuation of a sharp change in the voltage, and when the grounding is stopped, the lines are safe, breaking through the hull;
• when zeroing, in order to correctly determine the zero points and choose the method of zahistu, you will need the help of a specialist electrician, and to work grounding, pick up the circuit and bury it in the ground, you can be a kind of home master-smarter.

Grounded by a system for introducing voltage through a tricot, which is in the ground, from a metal profile welded in the ground. Correctly ruling the contour gives an overriding zahist, but with whom you are guilty, you will follow all the rules. Fallow in the effect, which is affected, vibiraetsya grounding and zeroing of electrical installations. Vіdminnіst zanulennya in the fact that all the elements fit, like in normal mode not under the strum, go to zero drotu. Vipadkovy dotik phase to zero details, the tool is used to bring the struma to a sharp haircut and turn on the possession.

Opir of a neutral zero dart, whether it be less than a sign of a contour in the earth, to that, when zeroed, it causes a short hum, which is basically impossible with an earthen tricutnik. After the pairing of the robots of the two systems, we become aware of why there is a difference. Grounded and grounded ones are raised for a way to zahist, so great is the ability to burn with an hour of neutral drotu, for which it is necessary to take a step. Zastosovuetsya more often than not in the richly overhead booths, the shards are not planted, the possibility of power over that is completely grounded.

Grounding is not to be laid down in the phase of the fittings, as well as for the attachment of the grounding, the necessary connections must be made. In most cases, the first method prevails in enterprises, where, behind the back of safety technology, the promotion of safety is transferred. And in the late afternoon, a circuit is often used to cut off the load of the voltage, which leads directly into the ground, more by the safe method.

For an hour of grounding, it is necessary to fluctuate without a middle of an electric lance, after a breakdown of the insulation for the fluff, the struma is transferred to the ground, the voltage is significantly reduced, but the mesh continues to work. When zeroed, the line turns on.

Grounding in most vipadkіv vikoristovuyut in lines with a lined insulated neutral in IT and TT systems in three-phase tethers with a voltage of up to 1 yew. volts or more than an indication for systems with a neutral in any mode. Grounding is recommended for lines with a grounded dead neutral wire in TN-C-S, TN-C, TN-S lines with N, PE, PEN conductors, the price is different. Grounded and grounded, unimportant on vіdminnostі, є systems zahistu people and fittings.

Corinthian terms of electrical engineering

For the sake of understanding the current principles, for which there are groundings, grounding and switching on, following the nobility of appointment:

Deep-earthed neutral with a zero wire from the generator or transformer, without intermediary connections to the ground loop.

It can be a vysnovok in the dzherel of the zminny strum in a single-phase tether, or the pole point of the dzherel of the stagnant strum in two-phase mains, as a middle wind in the three-phase tethers of a constant voltage.

The insulated neutral is the zero wire of the generator or the transformer, not connected to the ground circuit, but contacting it through a strong field support of signaling devices, auxiliary devices, control relays and other connections.

Accepted designation of grounding outbuildings at the border

All electrical installations with grounding conductors present in them and zero wires obov'yazkovo p_dlyagayut marking. The designations are applied to the tires at the same time as the letter designation PE with transverse or later changes are drawn with the same females of green and yellow color. Neutral zero conductors are marked with a black letter N, which means grounding and grounding. The description for the zahisny tare of the working zero is written in the letter designation PEN and filled in a black tone along the entire length with green-yellow tips.

Letters of designation

The first letters in the explanation before the system indicate the nature of the grounding outbuilding:

• T - z'ednannya dzherel zhivlennya without intermediary іz the earth;
• I - all strumovidny details insulated from the ground.

Another letter to serve for the description of the stream-conducting parts of how to come to the ground:

• T to talk about obov'yazkove grounding of all vіdkritikh details pіd naprugoyu, nezalezhno vіd mind zv'yazku z gruntom;
• N - means that the protection of the critical parts under the strum is carried out through a dead-earthed neutral in the direction of life without a middle.

Letters that stand through a dash in N, remind about the nature of this connection, indicate the method of obstructing the zero-based indicator of the working conductor:

• S - protection of PE of zero and N-working conductors with separate wires;
• Z - for the safe and working zero, one wire is required.

See the sick systems

The classification of systems is the main characteristic, which is dependent on grounding and grounding. The main technical specifications are described in the third part of GOST R 50571.2-94. It is necessary to ground it before it for IT, TN-C-S, TN-C, TN-S circuits.

The TN-C system was broken up at Nimechi on the cob of the 20th century. It has a working zero wire and a PE conductor connected in one cable. Not enough are those that, when zero or other damage is caused to the hulls, there is a voltage. Regardless of the price, the system zastosovetsya in some electrical installations to our hour.

TN-C-S and TN-S systems have been expanded to replace the recent TN-C grounding scheme. In the other scheme of the zakhistu, two types of zero darts were divided directly into the shield, and the contour was a folding metal structure. Tsya scheme turned out to be successful;

The TN-C-S system is recognized by the fact that the distribution of zero wires is not in line with the transformer, but approximately in the middle of the main. It was worth the distant decisions, the shards, having shaved zero to get down to the bottom, then the electric strum on the body would threaten life.

Scheme for the transmission of the TT system without intermediary connection of parts under voltage from the ground, with all the parts of the electrical installation with the presence of a struma connected with the ground loop through the ground circuit, which cannot be found in the neutral port of the generator or the transformer.

Behind the IT system, there is a defense to the unit, grounding and zeroing are established. Why is there such a difference in the appearance of the front scheme? In this case, the transmission of the load of the voltage from the body and the critical parts are driven into the ground, and the neutral of the dzherela, insulated from the ground, is grounded for additional fittings with a great support. This scheme operates in a special electrical installation, in which case security and stability can be promoted, for example, at likuvalnyh mortgages.

See zeroing systems

The PNG zeroing system is simple in design; The abbreviation is indicated for the same dart zastosovuetsya. Up to a short period of time, the advancement of the vimogy to the beneficial mutual potentials and the conductor's peretina is brought. The system is far away vikoristovuetsya for zeroing asynchronous units.

It is not allowed to win over such a scheme in group single-phase and separate chains. The confusion and replacement of the functions of the zero and power cables in the single-phase lance of the constant stream are prevented. The stench zastosovuetsya dodatkovy zero provіd z marking PUE-7.

A perfect grounding system for electrical installations that live in a single-phase line. In the midst of confusion, the hot conductor PEN comes to the strumu. Podіl to N and PE the conductors are connected at the railway station of the highway on single-phase spozhivachіv, for example, at the pedestal shield of a bagatokvartirny dwelling.

At the end, it is necessary to designate that the protection against strumming and the use of electric butt fittings when cutting the voltage are the main tasks of energy security. What is grounded and grounded, it is explained simply, understanding with the help of special knowledge. But in any case, come in whenever you need to take care of the safety of the butt-operated electric appliances, or the industrial possession of the debt is to be kept on the right side of the river.