Baby 1.15. Scheme of tying chotirikutniks.

Vimikachi at the jumpers increase the economic indicators of the scheme and complicate the design of the rozpodilchogo outbuilding. Therefore, with a large number of arrivals at a voltage of 330 kV, it is more necessary to install circuits with one-time single-type connections of elements.

1.6. Schemes "Napivtorna" and 4/3 (chotiri - third)

Schemes are installed on the voltage of 330 kV and more with the number of arrivals -

nіy shіst i more.

On the little 1.16, a diagram is shown, for which the number of vimics has to be increased to 1.5 (repeated).

Baby 1.16. Repeat scheme.

A diagram has been pointed at the little 1.17, for which the numbers are blinking.

lei until arrival 4/3. The principle of stimulating the scheme is left to itself, the coefficient of economy (1.33) is shorter, the lower one is one and a half (1.5), but it is still more likely to be stagnant.

tall and significantly improve the design of outdoor switchgear. Yakshcho vrahuvati, that the height of the stan-

of darnt portals on the VRP of 500 kV to become 27 m, then it became clear why such a design rarely stagnates.

This problem can be overcome by the way of victorious judicial centers (pі-

(See 1.18), however, with all the growth of the GRP, the total growth will increase.

The width of the middle of the outdoor switchgear of 500 kV should be 30 meters, and with such a layout, the number of the middle ones will be doubled, apparently double the size of the outdoor switchgear. This advantage is most often given by one-and-a-half schemes.

1.7. Scheme from two vimikachs on one visit

I'm on a voltage of 330 kV and especially in extreme weather. For example, on the AES or the great EUs that work in isolated energy systems. The introduction of such an EU can lead to the collapse of the energy system. In the winter period, a similar accident can cause not only a dent in the undertakings, but also the death of people.

The scheme (div. malunok 1.19) allows without including the repair

you be-like vimikachi and choose tires. Vaughn takes everything in the robot

zadnannya navit for such unsafe poshkodzhennya, like a short circuit on selected tires.

Baby 1.19. Scheme from two vimikachami on one admission.

Schemes of rich cutters and schemes with the same type of attachments are barely

Comrade, volodiyuchi nezaperechnymi perevagi, povnyannі zі schemes zі zbіrnimi tyres, one arrogant nedolіk. In the event of a short circuit on whether or not the relay is connected

ny zahist dіє on the inclusion of two vimikachiv, the number of operations with the inclusion of that inclusion of the vimikaciv is subdued, correspondingly

responsible growth and operational vitrati.

In addition, kіltsevі schemes vymagayut more foldable protection from the relay direction

Baby 1.11. Scheme "Trikutnik".

The area of ​​the circuit blockage is 35 kV and more. Її vіdrіznyayut simplicity, on-

goodness and economy. However, at power plants, which may be mostly in the first category, they rarely stop. Live consumer-

the interpreter in two, it’s not necessary to mіrkuvan nadіynostі.

Larger wide-width nabula scheme "Chotiryokhkutnik" (Fig.

Baby 1.12. Scheme "Chotiryokhkutnik".

The scheme allows you to carry out planned repairs of vimics without turning it on.

chennya come. However, with a short circuit on the line at the point 1Ks repair

Q1 volume, relay line switch on vimic Q2 and Q3 and

the whole scheme will fail.

On the little 1.13, a diagram of a chotirikutnik with a single-row roztashovuvannyam is shown.

to the women of vimikachiv, as in a similar situation, take one of the dzherel

nikіv kharchuvannya that neshkodzhenu line in the work.

Baby 1.13.

One-row expansion of vimikachi allows expansion.

nya schemes, converting її to the scheme of the "pyatikutnik" (Figure 1.14). The design of the ASU and the operation of vimics with such a layout is easy to understand.

Roses are installed on all arrivals. In case of a short circuit, be it a line, or a dzherel livelihood, it is necessary to switch on two keys. After whom, the rose is roared and switched on vimikachi,

reminiscent of "kiltse".

Baby 1.14. Scheme "P'yatikutnik".

The "P'yatikutnik" scheme, sometimes called the scheme of the expanded chotiroh-

kutnik, zastosovuєtsya on a voltage of 110 kV and more. On voltages 110 and 220

kV won - an alternative to the "One bus system with a bypass" scheme, clearly pre-

similarities in reliability and economy.

Life is like a power plant zdiisnyuєtsya protyag kіlkoh rokіv. Between the launch of the first blacks and the steps to pass through the rocks. Іnodi dіє

Vuyuchi EU expand and introduce new blocks on them. Shchob with expanded circuits

take the scheme from the robot and supplement it. For example, to chotirikutnik, scho є, connect one more. Behind this principle, schemes for tying chotirikutniks (Figure 1.15) and six-kutniks are created.

LECTURE SUMMARY OF DISCIPLINES

"ELECTRIC PART OF STATIONS AND PIDSTATION" part 2

For bachelors directly _” Energy and electrical engineering”_140400

for profiles: Electrical energy systems and facilities”, “Electric stations”, “Relay protection and automation of electrical energy systems”, “Electric supply”

Art. vikladach Galkin A.I.

Novocherkask 2014

Schemes of separate outbuildings

Earlier, in the 1st part, it was given the formulation of a separate outbuilding (RU), as an element of the structural scheme of the energy facility (stations or substations).

RU - the whole installation, is recognized for receiving and distributing electricity on one voltage and replacing switching devices (wiring and switching devices, and at substations there can be both short-circuiting and short-circuiting), language between devices.

There is a great variety of switchgear schemes, which are distinguished by superiority, operational flexibility and variability. May be the place of fallowness: what is more superb and operational flexibility of the Republic of Uzbekistan - that is more yogo vartist. Different prices are connected to RU arrival. up to the main come to us you can see: power lines ( W), power transformers ( T) and generators ( G) (as well as the CE of the generator voltage at the CHPP).

All raznomanittya RU can be added to the schemes RU with selected tires that scheme RU without selected tires . Stay at your place, you can divide it into RU for simplified schemes and on RP based on ring schemes .(bagatokutniki) In rich RU schemes, parts of the scheme can be added, so that three consecutively included elements can be replaced: rose ( QS1), vimicach ( Q), struma transformer ( TA) and one more rose'dnuvach ( QS2).

Let's take a look at the most extensive schemes of RU in the skin of the designated groups.

RU for simplified schemes. The switchgear for simplified schemes is a variety of block line options - a transformer or a local one, which is not typical for power plants and sounds to be installed on high-voltage substations with a small number of arrivals. Here you can see the entry-exit scheme.

Variants of schemes are shown in Fig. 8.1. Here the lines are shown by arrows, and the power transformers are shown crossed (voltage regulation for voltage). Lines and power transformers are not elements of the switchgear, but are themselves attached to the switchgear. The switchgear diagram shows vimikachi, roz'dnuvachi, struma transformers and voltage transformers.

RU behind the block line diagram - transformer (Fig. 8.1, b) zastosovuetsya on dead-end single-transformer substations like RU VN with one line of life. On two-transformer dead-end substations with two life-giving lines, install the switchgear behind the circuit with two blocks of the line - a transformer with switches and a non-automatic jumper from the side of the line (Fig. 8.1, in).

RU for the scheme of places (Fig. 8.1, Gі d) stand on the high side of the transit substations, so that they can be switched on before the distribution of the transit line. At the borders of the substation, the transit of tightness is carried out by the lanyard of an automatic jumper, to avenge the vimikach. There are two more vimics in the scheme of mystkivs. The stinks can be installed either on the side of power transformers (Fig. 8.1. G) or from the side of the line (Fig. 8.1, d). For an hour, the repair of the elements of the automatic jumper, so as not to pin the transit of tightness, a non-automatic jumper (without a switch) was transferred, as it is called a repair.

Rice. 8.1. RU for simplified schemes:

a- a block of roses; b- those same, ale with vimikachem; in- two blocks with vimikachami and a non-automatic jumper from the side of the line; G- a place with vimikachami in transformer lancets and a repair jumper on the side of transformers;

Sales small. 8.1:

d- a place with vimikachs in the lancets of the lines and a repair jumper from the side of the line; e- Zahid-vihid

At transit single-transformer substations, install a switchgear according to the start-up circuit (Fig. 8.1, e). There is also a repair jumper without vimic

Switchgear diagrams with selected tires. RU with selected tires is folded with selected tires, to which are connected different arrival. up to the main come to us you can see: power transmission lines, power transformers and generators (for example, generator voltage switchgear).

Selected tires are called busbars of hard or flexible construction, which may have a small electric opir, and are recognized for connection to the connection.

In schemes with selected tires of the lancet of the main ones, steps are installed. From the side of the selected tire, a rose is installed, which is called a tire, then a vimikach is installed, after a vimikacha - a struma transformer, and behind it from the side one more rose is added, which is called a linear one or a transformer (falsely connected).

Among the multiple RUs with selected tires, you can see the steps:

· switchgear diagrams with one working busbar system (sound sectionalized);

· switchgear diagrams with one working and bypass bus systems;

· switchgear diagrams with two operating and bypass busbar systems;

· schemes with two working bus systems and three vimicacs for two arrivals.

Switchgear diagram with one operating busbar systemє simple, basic, economical, but not enough operational flexibility. When repairing the vimikacha or another device in the lance, it will cost you life, and when repairing a tire or a section of tires, all connections are made, connected with the tire (section).

Rice. 8.2 Scheme of the switchgear with one working busbar system: b - sectioned with vimikachem.

At power plants, such a scheme in a sectioned version can be installed in the schemes of the distribution switchgear for the supply of water needs of 6 kV or the generator switchgear of 6 - 10 kV at the CHPP.

At the substations, such a circuit in a sectioned version can be installed in the switchgear circuits on the low voltage side of 6 - 10 kV (inode 35 kV) (PN switchgear).

Switchgear scheme with one operating and bypass busbar systems zastosovuetsya at stations and substations at a pressure of 110, 220 kV, so the number of arrivals is less than seven. An important advantage of this scheme is the possibility of replacing any (one at a given moment) vimikacha in lansy when it is repaired, or revision bypass vimikacha ( QB1 in Fig. 8.3) without interrupting the arrival. Strumu way to bypass vimikacha, which is being repaired, created for the help of bypass vimikacha and bypass tire system. Often a working bus system in this scheme is sectioned, as shown in a small one. In the normal mode of operation, the bus system does not change under the pressure and її tire roses ( QSB) is enabled. In the included position, there is a common vimikach and roses in June.

The main operations for changing vimikach in lanczyuz, bypassing the improvement of switching rules, are looked at on the butt of vimicach Q1 in lanciug line W1:

On the back of the head, turn on roses in the lances of the general vimikach QB1, moreover, at the fork of roses "dnuvachiv" include the one that binds with the same section as the W1.

Which one to include QB1 and cym apply voltage to the bypass bus. It is worth trying to re-check the insulation of the bypass bus.

On the offensive krotsі turn on QB1.

Now, if the riven of the insulation is turned over, turn on the tire rose QSB1 at Lanciusi W1.

Restart QB1.

Now we may have two ways to pierce the strum in the lance W1: one through Q1, and the other through QB1.

Now you can turn it up Q1 that rose rose at Yogo Lantsyugu for a wine rose from a tire rose QSB1.

However, this scheme saves that small amount, which is used to repair sections of working tires. The scheme with two working bus systems was spared a little, often bypassing the bus.

Rice. 8.3 Scheme with one working section and bypass busbar systems (strum and voltage transformers are not shown): QSB1, QSB2, QSB3 - busbar roses of the double bypass busbar system near Lansyugs; Q1 - wimikach in Lanciusi adventitia; QS1 and QS2 - tire and linear roses in lances; QB1 - bypass vimic; QK1 (QK2) - sectional vimic.

Switchgear diagram with two operating and bypass busbar systems zastosovuetsya at voltage switchgear 110, 220 kV, so the number of arrivals is not less than n_zh sіm. In this scheme, part of the connection is connected with one working bus (K1), and part is connected with another (K2). Ale, be it as it were, you can transfer for the help of a bus-loading tire QK and tire roses for the arrival of one system of working tires to a foreign country. (During this operation, the shinoz'dnuvalny vimikach QK and roz'dnuvachі in yogo lantsyug owe to perebuvat at the included station. Tse vikoristovuyut when repairing whether it is a working tire. The presence of the bypass vimikacha and the bypass tire gives the same advantages as the forward scheme.

Rice. 8.4 Scheme with two working and bypass busbar systems (strumu and voltage transformers are not shown): QK - bus-sednuvalny vimikach; QB - bypass vimic; K1 - first working tire system; K2 - another working bus system; KV - bypass bus system.

A short circuit of the circuit, like the front one, will be left out of those that, in the event of an emergency connection to one of the working tires (for example, after a short circuit on the bus), it will be turned on and the link between the busbars will be turned on

Scheme with two working bus systems and three vimikachami for two arrivals it is recommended before stasis in the switchgear with a voltage of 330 - 750 kV if the number of arrivals is six or more. In this scheme, for the account of the supplementary vitrati vimikachiv (mentally 1.5 vimikacha per arrival, the name of the second scheme is called the second), the high operational flexibility and superior communication between the arrivals in case of emergency and operational situations is reached.

In the middle of the scheme, it can be seen that when repairing or revising, be it any vimic, everything is in the robot, and in the event of an emergency connection of one of the working tires, the links between the connections are not wasted, so it’s left in the robot.

In the middle of a short time, you can indicate the need for commutation when two vimikachs arrive and for a promotion. Krym tsgogo, at tsіy schemes, the secondary lances of the transformers are folded into the struma, because Strum transformers are installed here in the lances of vimikaciv and to remove the strum, it is necessary to sum up (from the first law of Kirchhoff) the stream of the secondary windings of two transformers.

Rice. 8.5 One-and-a-half diagram of the switchgear (strum and voltage transformers are not shown): K1 and K2 - working bus systems.

Switchgear schemes based on ring schemes (bagatokutnikov). Stay in 110-220 kV switchgear and more. At the circle schemes (the schemes of the bagatokutniks), the vimikaci are united among themselves, making the circle. The leather element is a line, the transformer is connected between two courts. The simplest ring scheme is the tricot scheme (Fig. 8.6 a). The W1 line was brought to the circuit with Q1, Q2 vimics, the W2 line - with Q2, Q3 vims, the transformer - with Q1, Q3 vims. Bagatorazov's addition of an element to the main scheme is more flexible and superfluous, while the number of variables in the scheme, as seen, does not exceed the number of arrivals. The tricot scheme for three advents has three vimikachi, so the scheme is economical.

In ring schemes, a revision of any vimikacha is carried out without interruption of any element. So, when revising the vimikach Q1, one of the roses is included, installed on the side of the vimikacha. With any insult to the line, that transformer is left in the robot, the circuit becomes smaller due to the opening of the ring. If in this mode there is a short circuit on the W2 line, then the switches Q2 and Q3 are turned on, after which the transformer is left without voltage. It will also turn on all the elements in the substation in the event of a short circuit on the line and one switch: for example, in the event of a short circuit on the W1 line and the switch in the robot Q1, the switches Q2 and Q3 are turned on. Іmovirnіst zbіgu

Rice. 8.6 Ring diagrams (bagatokutniki) (strumu and voltage transformers are not shown).

poshkodzhennya on the line with the revision of vimikach, as it was appointed more, to deposit in the wake of the repair of vimikacha. Increased maintenance period and reliability of work and vimikachiv, as well as a change in maintenance efficiency, significantly increase the reliability of schemes.

In circular schemes, there is a higher level of robotic vimikachiv, while in other schemes, shards are the ability to try out any kind of vimikacha for an hour of a normal robotic scheme. Testing the vimikacha with a yoga path does not disrupt the work of the received elements and does not interfere with the daily switching of the circuit.

On fig. 8.6, b a diagram of a chotirikutnik (to a square) is presented. This scheme is economical (chotiri vimikachi on chotiri arrival), allows you to test and revise any kind of vimikacha without damaging the work and її elements. The scheme may be highly superior. Including all the additions of a small language, it can be the case when you make a revision of one of the variables, for example Q1, a shortened line W2 and another version of the language Q4. When repairing the W2 line, switch on the switches Q3, Q4 and the roses, installed at the back lines. Calls come W1, T1 and T2, which are left out in the robot, are sent through the signals Ql, Q2. If T1 fails during this period, then the Q2 switch will turn on, the other transformer and the W1 line will be left with the robot, but the transit of tension will be destroyed. The installation of linear roses QS1 and QS2 is not enough.

The victory of all kіltsevih schemes є vikoristanny roz'єdnuvachіv les repair robit. The number of surgeries of roses in such schemes is small.

Until the next few days, bring in a foldable choice of transformers in the stream, vimikachiv and roses. Strumu transformers are installed here, so it’s the same in the scheme of the second, in the lance of vimikachiv

Main electrical wiring diagrampower stations and substations - the totality of the main electrical equipment (generators, transformers, lines), selected busbars, switching and other primary equipment with the use of wiping between them in nature.

The choice of the main circuit is the initial one in the design of the electrical part of the power station (substations), the shards designate the entire warehouse of elements and connections between them. The main scheme was selected for the weekend and the hour of ordering important electrical circuits, demand circuits, secondary service circuits, and wiring diagrams.

On the armchair, the main circuits are displayed in a single-line configuration with the switched on position of all installation elements. In certain situations, it is allowed to display only the elements of the scheme in the working position.

All elements of the scheme and the connection between them are displayed in accordance with the standards of the Unified Design Documentation System (ESKD).

Description of the main circuit

The main scheme of electrical substations is the totality of the main electrical equipment: transformers, lines, vimics, selective tires, switches and other switching equipment with the usual connection between them electrical circuits.

Before the main schemes of the substations, there are the very basics of reliability, security of service, durability, maintainability, economy and maneuverability, which are up to the main schemes of electrical stations.

Fallow depending on the position of the substation in the system, it is very important, especially important for superiority and maneuverability, can be less hard in some slopes.

The number of transformers in the substations may not matter for the selection of the scheme. For іsnuyuchoyu pіdstantsіyah zvіvlyuyut install troch more than two transformers.

It is necessary to insure the category of safety equipment before the PUE of the design of the main circuit of the electrical power lines. The installation of one transformer at the substation is allowed at the slopes, if the area is located up to 2nd and 3rd category, which allow short interruptions in the electricity supply, necessary for the inclusion of backup housing in the area.

At the substation 500 kV. vikoristan one-and-a-half scheme (3 vimikachi and 2 adjuncts). The arrival was not fixed on the same school, but included in the intermediary between the lancers. Selecting the scheme of priming її superiority over the smaller and smaller critical imperfections.

Before the success of the one-and-a-half scheme, it is necessary to advance: a revision of any vimikacha or tire system is carried out without damaging the work and with a minimum number of operations when these elements are removed from the repair; roz'єdnuvachі vykoryvayutsya less during repairs (safety of visible rozryu to elements of RU, scho to be under pressure); offending bus systems can be turned on overnight without damaging the connection. The second scheme is based on the superiority of the scheme with the choice of tires with the maneuverability of the scheme of the bagatokutnik.

Up to a small number of secondary circuits, there is a large number of vimikachiv and transformers of the stream, a complication of the relay protection, and the choice of vimikachiv and the decision of possession on the sub-base of the nominal stream.

The increase in the number of vimics in the second scheme is often compensated by the number of mimics.

Description of the main property of the 500 kV substation

At the 500 kV substation, two come and two 500 kV power lines, as well as two autotransformers that transform the voltage of 500 kV into 330 kV. Vimiryuvalnі transformers stream and voltage. Numerical good tires and busbars for a link between each other. At the substations, there is also a technical life, where there are permanently chergovy personnel who follow the show of the substation, and also all the relay protection of automation is carried out.

Theme 7

Schemes are engraved in single-line and trilinear images. For simplicity, that accuracy is most often vicorist one-line circuits, de show the design for one phase.

Schemes of the first lances (brand schemes) show the lances, by which electricity is transmitted from the house to the residents.

The Crimean electrical equipment of the primary lances at power stations and substations should be equipped with additional equipment (electrical equipment, attachments of relay protection and automation), recognized for the management and control of the operation of the primary power. Schemes of secondary lancers are called schemes for setting up a secondary (additional setting). All connections at the second lancers are wired with insulated wires and control cables.

When choosing the main schemes of separate outbuildings in stations and substations, the following factors are insured:

Значення та роль електростанції або підстанції в енергосистемі (електростанції - базисні або пікові, наближені до промислових вузлів або віддалені, пов'язані з іншими електростанціями через шини вищої напруги або середньої напруги; підстанції - тупикові, відпайкові, прохідні або розподільні;

Prospects for expansion;

Rіven strumіv short zamikannya

The main schemes of power plants are to blame for the main vimog:

Hope, tobto. the construction of a scheme to ensure the uninterrupted supply of electricity to people who see electricity and the transit of tension in case of poor possession;

Pristosovaniye for carrying out repairs of the main equipment without the supply of electric power supply;

Operational gnuchkіst, tobto. pristovanіst for carrying out operational remembrances with a minimum number of operations for a minimum hour and with a minimum risk;

Economy.

Structural diagrams (block diagrams) of power plants and substations show connections between generators and transformers with different outbuildings (RU) of different voltages. Root attachment is a collection of the possession of one voltage, zadnanogo behind the singing scheme and incorporating the scheme in nature.
^ See the main schemes
One working busbar system, sectioned with vimikachem

Such a scheme is designed for switchgear - 6.10, 35 kV power plants and substations. In normal mode, the robotic sectional switch (CB) is switched off. When the voltage is detected, one section of the CB is automatically switched on by the AVR add-on (automatically introduced to the reserve). The sectional vimikach can be noted by the operator, as for some reason it should be shown at the same time the introduction of the dzherel. The scheme allows you to save the life of all connected lines to life. Squids are connected by twin lines to the various sections, the repair of one section is also carried out until the power supply is damaged.

^ Block diagrams

Zastosovyvaetsya for razpodіlnyh pristroїv vishchoї voltaja dead-end and vіdpaykovyh pіdstantsіy 35 - 220 kV. Schemes with vіdokremlyuvachami zastosovuetsya for switchgear 110 kV, so the pressure of the transformer is not

Revisit 25 MVA. The idling stream of such transformers is small and, if necessary, it can be connected by a power supply. With a great stream of idling, to turn on the transformer, it would have been necessary to go to the living station or substation.

The repair jumper is broken when one is brought into repair for a line of living. At the repair switch, two roses are installed. Yakbi in the transition was installed more than one roz'dnuvach, yogo repairs vyklikav outside the extinguished substation.
^ Local schemes
Local schemes are designed for switchgear depending on the voltage of passing (transit) substations 35 - 220 kV. There are two options for a local circuit with switches in transformer lances (a, b) and a local circuit with water heaters in transformer lances (c), so that it can be used for passing substations of 110 kV with transformers with a voltage of up to 25 MVA.

In local schemes, the transit of tension is established through a working bridge with vimikach. The repair jumper is used to save transit for an hour for the repair of a working jumper.

In scheme a) the transit of tension is attached, which means that there is a fault in the transformer. Some variations of the scheme are primed. In scheme b) with a weak transformer, only the nearest other humic is weak. The transit of tension through the working jumper is saved. Therefore, the scheme b) is stagnant at the exits, if the transfer to transit through the substation can be significant for the power system.

The scheme is designed for a switchgear with a higher voltage of passing substations 220 kV kV. In the normal mode, the robots have all the vimics. Repair of any kind of vimikacha can be done without damaging the transit of pressure through the substation and the connection of transformers. Poshkodzhennya transformers and vimikachiv also can not be brought to the destruction of transit. Therefore, the scheme wins for the advancement of the transit.
^ One working bus system with bypass
Scheme - to improve the scheme with one bus system to add to the working bus system (RSSh) of a special bypass (OSSh).

Scheme zastosovuetsya for RU Vishchoi voltage rozpodіlnyh substations 110 - 220 kV. Bypass the busbar system fails when one is brought in for repair without connecting the lines to the emergency line. For which one, the bypass vimikach (OV) is turned on, which replaces the vimikach that is being repaired. At the time of repair of one section of the working bus system, it is necessary to connect the connections to it.
^ Two working bus systems with bypass

Scheme zastosovuetsya for switchgear with high voltage of hub substations and power plants 110 - 220 kV. When repairing one system of selected tires, they are transferred to another one.

Tire-sednuvalny vimikach (SHV) in normal mode, work can be on and off. When transferring the arrival of one bus system to another SHV, it may be in the on position. When connected to normal mode, robots can be connected to up to one or both systems of the bus system. Bypass system of tires vikoristovuetsya like a front scheme for the repair of vimikacha one s arrival.

For the switchgear of the generator voltage of power plants (6, 10, 20 kV), a circuit is installed from two working systems of selected tires without a bypass.

^ Schemes 3/2 and 4/3
One-and-a-half scheme (a) or 3/2 scheme is designed for switchgear 330 - 500 kV power plants and substations. This scheme has three victories for two advents. If so, the repair of any kind of vimikacha and whether or not the tire system is installed without switching on the arrival. The circuit does not require the installation of SHV.