Provid sip 2 strumovі navantazhennya. Selection of re-insulated wires with sip

self-supporting insulation wire(СІП) knowledge of zastosuvannya is important for the supply of electricity to transformer substations 10/0.4 kV to substation. The system appeared at the 60th anniversary of the last century as an alternative to uninsulated wires on insulators.

СІП-2 with zero core (great diameter), covered with insulation

Provide SIP-2 to enter a group of self-supporting cables with insulation, which transmit electricity repeatedly to different houses. With this help, you can also carry out ovnіshnі osvіtlyuvalnі measures. Provid mozhe vikoristovuvatysya in zvichaynomu, industrial and aggressive middle, scho to avenge the power of the volog.

The photo above shows SIP-2 with zero hull, covered with insulation.

Budova and the characteristics of zero lived

Also use other brands that are constructively:

• СІП-1 - zero core not to avenge insulation (repair power lines and maintenance until wake-up);
• СІП-3 – insulation wires from one duct (for high-voltage lines);
• СІП-4 - carrying a vein during the day (2 or 4 twisted darts for the weed).

See self-supporting insulated dart (SIP)

At the main wires, the bagatodrotyany and narrowed lived, made of aluminum, covered with insulation from a cross-linked polyethylene, which is well-visible to atmospheric infusions, ultraviolet and triple heating up to 90 0 С. It can be without insulation (СІП-2, СІП-2F) or with it (СІП-2А, СІП-2AF). Її often use a steel dart to increase the hardness of the structure. As shown in the little one, the steel core is roztashovuetsya in the middle of the strum vein.

Budova zero lived SIP-2A

When it is necessary, schob opir zero lived in accordance with the standards, let's point at the table.

Characteristics of the zero lived

Peretin lived, mm 2	25	35	50	54.6	70	95
Opir Ohm/km	1.38	0.986	0.72	0.63	0.493	0.363
Number of darts	2-7	2-7	2-7	2-7	2-7	2-7
Minimum mіtsnіst during stretching, Kn	7.4	10.3	14.2	16.6	20.6	27.9
Wagon harness, kg/km	670	770	907	-	1170	1265

Opіr phase veins vіrіznyaєtsya vіd zero. Yogo can be known as a guide for any brand of drone.

At the table, a penalty was also imposed on the stretching of the zero one, and that bundle of harness was necessary for the stretching of the stretch.

Perevagi SIP-2

1. Mozhlivist vikoristannya on galnih supports at once with other wires.
2. Reduced costs for operation.
3. Bezpeka with vipadkovy dots to phase darts under tension.
4. The line is left with a practical navit when the wires are cleared.
5. Blame short circuit as a result of the contact of the firearm with grounded elements.
6. Constructive simplicity and the possibility of zbіlshennya between supports.
7. Folding of unauthorized connection.
8. No need to replace insulators. Possibility to repair lines under pressure.
9. The inductive opir is reduced by 2.5-3 times per rahunok of the acidic insulation.

CIP can be located at the complex with a traditional line. On the little one there is a picture of the SIP installation (bottom) in the presence of a large covered main on insulators.

Vіdgaluzhennya SIP vіd povіtryanoї main line on insulators

Technical characteristics of SIP-2

The use of cross-linked polyethylene in the case of cable bending ensures a safe increase in power: strength, elasticity and heat resistance. SIP-2 insurance for the following temperatures:

• temperature of the middle - vіd -60 0 С to +50 0 С;
• maximum operating temperature of the cable - 900C;
• the boundary value at navantazhennі (nearly 8 years. for production) - 130 0 C;
• heating is alive at short circuit (up to 5 sec.) - 250 0 C;
• allowable radius of the twisted cable is not less than 10 diameters.

Table has hover technical characteristics cable.

Characteristics of SIP-2

№	Peretin	Bundle diameter, mm	Weight of bundle, kg/km	Struma power in working mode, A
				Phasny provіd	Provision of lighting
1	3x25+54.6	24	531	112	-
2	3x25+54.6+16	25	600	112	83
3	3x25+54.6+2x16	26.5	670	112	83
4	3x35+54.6	24.6	641	138	-
5	3x35+54.6+16	25.5	710	138	83
6	3x35+54.6+2x16	27.5	779	138	83
7	3x50+54.6	27	770	165	-
8	3x50+54.6+16	28.5	839	165	83
9	3x50+54.6+2x16	30	907	165	83
10	3x70+54.6	30	985	180	-
11	3x70+54.6+16	32.2	1054	180	83
12	3x70+54.6+2x16	33	1122	180	83
13	3x95+70	35	1130	258	-
14	3x95+70+16	36	1200	258	83
15	3x95+70+2x16	37	1265	258	83
16	3x120+70	37	1380	300	-
17	3x120+70+16	38	1450	300	83
18	3x120+70+2x16	39	1520	300	83
19	3x150+70	40	1749	344	-
20	3x150+70+16	41	1817	344	83
21	3x150+70+2x16	42	1885	344	83

Price SIP-2

Varity of a running meter of a cable varies in wide ranges. On the base price, add the vaga, retin and other parameters to the dart. The price of SIP-2 3x16 mm 2 nin_ becomes 82 rubles / m, and 3x70 mm 2 - 254 rubles / m. If a buyer makes a promise to a great number, it will change. It will also be cheaper to buy darts from stock in stock. As it is necessary to make a short piece of clothing from the drum, the wire will be more expensive by 3-5%, the surplus will become less for a long time and it will be more folded to sell.

Wired with a load-bearing vein, in the middle of which there is a steel core, which is more expensive. The same is the price of darts made from insulated bearing husk (SIP-2A).

When buying, it is easy to designate the length of the cable, the shards of the windings on the drum. Yogo rozrahunkov's vaga little vіdіzniaєєє vіd aktualії. If you designate a vag, then behind the table you can easily know the dovzhina.

1. Carrying the neutral is fixed to the anchor wedges (as SIP-2A or SIP-2AF is installed, insulation is not required). If installation is carried out, the cable is placed in the middle of the clamping of the aluminum alloy and is clamped with plastic wedges (Fig. a). Types of anchors: RA-1000, RA-1500, RA-2200.
2. Selected plugs PS-1500 ES-1500 made of resistant to atmospheric plastic injections are used for the suspension of wires on the end and intermediate supports (Fig. b). The kit has steel galvanized stench brackets and supporting knots.

Fittings for SIP: a - tension anchor; b - zatyskach for pіdtrimki; in - good luck

SIP installation

1. The basis for the dart is the brackets, attached to the supports with steel clamps.
2. The installation work is mechanized. For wires with a span of not more than 50 mm 2, it is allowed to manually cut the CIP, the shards of it are small and allow the work to be done. For support, a drum is placed and wound on a new dart, until the end of which the rope is fastened.
3. At the upper part of the skin support, there are rollers for rolling. At the installation world, CIP is stretched along them for an additional rope. It is not allowed to lay the rod on the ground or make contact with the structure, so as not to damage the insulation.
4. For example, a village of zero bearing a vein is fastened with a tack to the end support.
5. The carrying vein was pulled tight by a winch. Zusillya controlled by a dynamometer. After that, as it is carried out, it is checked for sagging and the rest is stretched.
6. On the cob of the village of zero, the vein was fixed with a tack, after which the winch is lifted.
7. Zero wire is transferred from the rollers at the zatiskachi, which is supported. Rozkochuvalnі rollers znіmayutsya.
8. СІП susіdnіkh dіlyanok іnії lіnії z'єdnuyutsya bare kіntsami prіvіvіnіm prisuvannyam v іlzі (small v).

Video about installation and operation of SIP

By some order, installation, operation and repair of self-supporting insulated darts, tell the video below.

Self-supporting insulation wire overturns traditional analogues without insulation for a lot of displays. In addition, for this laying, insulators and special supports are not needed. But the qualifications of electricians can be high, and for the work you need a new set of tools.

Peretinu insulated darts SIP up to 1 kV is selected according to the economical capacity of the stream and heating for the number of years the maximum voltage is greater than 4000 - 5000, with a lower threevalence the maximum voltage is heated. Like a retinal dart, appointments for tsim minds, to go out smaller for a recut, which means others technical minds(mechanical strength, thermal stability in case of short-circuit shocks, use the power), it is necessary to take the largest overcut, necessary with technical minds.

When choosing overheating SIP heating, the following material should be insulated: thermoplastic or sewn polyethylene. Permissible temperatures of core wires with different insulation for different modes of operation are shown in Table. one.

Table 1. Structural and variant characteristics of insulated wires

Insulation made from cross-linked polyethylene is more thermoresistant, lower from thermoplastic polyethylene. In normal modes of operation, the temperature lived with insulation made of thermoplastic polyethylene is 70 ° C, and with insulation made of cross-linked polyethylene - 90 ° C.

The SIP shifting mode is allowed up to 8 years for production, three more than 100 years for rivers and three more than 1000 years for the long term of wire service.

Vіdpovіdnі admissible temperature admissible trivalі strum Idop for different structures SIP guidance in the table. 2 and 3. Immediately indicated are the ohmic supports of the phase and zero cores and the boundary one-second jet of thermal stability.

Tab. 2. Electrical parameters of wires SIP-1, SIP-1A (SIP-2, SIP-2A)

Tab. 3. Electrical parameters of wires SIP-4

Tab. 4. Permissible trials of insulated wires

For alignment at the table. 4 allowed trials of uninsulated darts. Conducting SIP with a voltage of up to 1 kV allows for less strumov, lower non-insulated rods. Carry out SIP cooling more effectively, the shards may insulate and twist at the bundle.

Conducting insulation from cross-linked polyethylene is 1.15 - 1.2 times more expensive than conducting insulation from thermoplastic polyethylene. However, as can be seen from the tables. 2 and 3, CIP with insulation from cross-linked polyethylene can have 1.3 - 1.4 times more throughput building, lower than the same cross-section with insulation from thermoplastic polyethylene. It is obvious that the choice of rewriting SIP slid is carried out on the basis of technical and economic matching of options from different insulation.

Let's take a look at a specific butt to choose the cut of the SIP behind the rozrachunk strum Icalc = 140 A.

Vіdpovіdno to vihіdnih data tab. 2, two SIP options can be accepted:

SIP-1A 3x50 + 1x70, I dod = 140 A; insulation - thermoplastic polyethylene;

SIP-2A 3x35 + 1x50, I dod = 160 A; insulation - sewn polyethylene.

Obviously, it is cost-effective to adopt SIP-2A 3x35 + 1x50 with insulation from cross-linked polyethylene:

In this rank, in fact, it is necessary to replace the SIP-1A dart for the SIP-2A wire of a smaller cut and a smaller var. Zavdyaki tsіy zamіnі:

change the mass of the drone;

the dimensions of the drota are changing, and they are gradually decreasing in an iron-wind direction on the wire;

zbіlshuєtsya service term ВЛІ, as zshity polyethylene dogovіchnіshy for thermoplastic polyethylene.

The technical parameters of the SIP-4 dart match the parameters of the SIP-4 dart. Provid SIPn-4 with insulation, which does not rozpovsyudzhu gorіnnya, next stop in the minds of the movement:

for the introduction to the dwelling houses and crafts;

under the hour of laying on the walls of the houses and the houses;

in zones with advanced fire insecurity.

Yakshcho chooses a drota SIPn-4 fire safety, then the choice between wires of the SIP-4 and SIPS-4 brands is carried out by technical and economic solutions of the options.

For the re-verification of pereriziv for thermal stability with strums of short circuit table. 2 and 3 induction of a permissible one-second jet of thermal resistance I k1.

In case of other short circuit trivality, the allowable strum of thermal resistance is determined by the multiples of the strum I k1 by the correction factor

de t – short circuit trivality, s.

Behind the minds of mechanical strength on the highways of VLI, linear vіdgaluzhennyah and vіdgaluzhennyah before entering the next zastosovuvat droti with minimal cuts, designated in table. 5. In case of reversion of CIP over the allowable voltage loss, it is necessary to know the running parameters of the cable. Omіchnі support CIP induced in the table. 11 and 2, inductive supports - tab. 6.

Tab. 5. Conduct VLI with minimal cuts (butt)

Tab. 6. Inductive supports rich-core darts SIP

It should be taken into account that inductive supports of non-insulated wires of VLI become Xo = 0.3 Ohm/km.

Zavdyaki lesser jet mounts the voltages in the lines with SIP will be smaller, the lower ones in the lines with uninsulated wires for smaller equal minds.

Permissible heating temperatures for the protection of wire insulation (SIP-3, PZV, PZVG) are shown in Table. 1, electrical parameters of wires - in table. 7 and 8.

Perezii protected by insulation of wires with a voltage of 1 kV are selected for an economical thick stream. Selected cuts are due to the satisfaction of the allowable heating, thermal stability in case of short circuit strumas, mechanical strength, allowable voltage loss.

Tab. 7. Electrical parameters of wires SIP-3

Permissible trials of protected wire insulation, lower non-insulated wire. Tse explained good minds cooling of single-core insulated wires, and more friendly minds work of contact connections at paired with contact connections of non-insulated darts. On VLI and VLZ, all contact connections are sealed.

The thermal stability of insulated darts with a voltage of 1 kV is tested the same way as insulated darts with a voltage of up to 1 kV.

Behind the minds of mechanical strength on the VLZ, it was necessary to put darts with minimal cuts, indicated in the table. nine.

Self-supporting insulation wire type 2 vikoristovuetsya for repeating mains of power transmission lines, which may Rated voltage not more than 0.6/1 kV and frequency up to 50 Hz.

Technical characteristics

Temperature ratings for SIP-2 and SIP-2a cables are standard, as for others.

Tse means:

• Installation at normal temperatures up to -20 °C;
• Possibility of cable exploitation between -60 ° С - + 50 ° С;
• Heating during operation - up to 90 ° С, in emergency situations, this indicator can reach 150 ° С, and when short flicker for the system – up to 250 °С;

They are issued in standard sizes with cuts of 16-240 mm 2 and are covered for a nominal strength of the struma of 100-515 A. Carrying the vein of the vikonan from a steel-aluminum alloy, strum-conducting - from pure aluminum. The mass of a running kilometer in fallow land per peretina is 135 kg up to 1.5 tons.

Zagalom, this wire may be similar to the cable, however, it is important to know.

Features of SIP-2 cable

In a first way, zero or non-bearing lived in a cable of a kind insulated.

In another way, the isolation of the Vikonan is not easy compared to the light-stabilized one. resistant to ultraviolet polyethylene, and even more so especially micaceous, so-called. cross-linked, which has transverse molecular bonds. The thickness of the insulation may be not less than 1.3-1.7 mm for darts of various overhangs.

Wine is environmentally friendly, tobto. materials, from some of the vins of preparations, do not see the atmosphere of everyday harsh chemical speeches for an hour.

Insulation wires of this type can be installed without turning on the supply of electricity. The risk of damage by electricity during the maintenance of the power transmission line or the drop-off dock before the wire is minimal. I want a wire of type 2 price per meter of three things, lower for similar non-insulated wires, because the difference is small uninterrupted work measure and minimum number of emergency situations.

The design of such darts allows you to save a lot of money, because. At the same time, on the same support, it is possible to place a cable connection line with a different working voltage.

DERZHSTANDART assigns a minimum service term of 40 years for the SIP-2 cable, for the first 3 years we give a guarantee for the products. The actual validity of the term of operation is declared at technical documentation figures can only be obtained from time to time, all of which could be properly transported, taken care of, installed, and further exploited.

Installation specifics

• To prevent daily mechanical failure self-supporting dart It is possible to break during the laying of wires with a minimum radius of 7-10 of the outer diameters of this cable.

• From the method of zapobіgannya such poshkodzhennyami zberіgaetsya and stachaєtsya on the drums. І in the process of installation, the cable must be carefully unrolled from the winches.

• After the installation of the dart on the support of the susilla, which should fall on the bearing zero vein in the process of operation, it is not guilty to change: 45 N / mm 2.

• For a different cut, the necessary pіdbіr vіdpovіdnoї fittings, which will secure the mіtsne, hermetically sealed and secure cable.

Review of prices for SIP-2

As a rule, when buying such a cable from retailers, the price for a new one depends on wholesale and dealer prices. The best solution would be to buy a dealer. The stench allows small orders, and the price is wholesale. We have official dealers for the sale of cable. this type so you need a wine - call or write. Zrobimo best price especially for you!

Well, if you look at the average displays, then for the drotu sip 2 price per meter become from 35 to 500 rubles. Won to lie down with a lot of parameters, but also the main wire cable.

Choose the necessary revision, so that you can recognize the report:

Lie down to a group of self-supporting insulated wires for transmission of electricity. Structurally, SIP-2 is a phase of aluminum lived and carries zero aluminum alloy, which avenges ABE in polymer light-stabilized insulation made of cross-linked polyethylene (XDPE). Provision of insurance for changing voltage 0.66 - 1 kV (nominal frequency 50 Hz), less risk of short flickering.

Characteristics of SIP-2

The number of main phase wires - cores 3. For zero cores SIP-2 all modifications of the crim wire with a spanner wire are 54.6 mm * 2. Electric Opir zero cores fallow in the cut: 25 mm 2 - 1.38 Ohm / km; 35 mm 2 - 0.986 Ohm / km; 50 mm 2 - 0.72 Ohm / km; 54.6 mm 2 - 0.63 Ohm / km; 70 mm 2 - 0.493 Ohm / km; 95 mm 2 - 0.363 Ohm / km (independently from the number of darts near the core).

At the same time, it is important to preserve the proportions of the bearing diameter to zero lived in all the world's variations. For stream-conducting conductors D 16 mm Quantity of darts for veins with peretina 25; 35; fifty; 54.6; 70; 95 mm * 2 - 7. Lived with a peretina 95 mm * 2 can be stacked with 19 darts. Boundary indications for the outer diameter of the cores: for cores with a 25 mm 2 crossover - 5.7 (min) / 6.1 (max) mm, for cores 35 mm 2 - 6.7 / 7.1 mm, 50 mm 2 - 7.85 /8.35 mm; 54.6 mm 2 - 9.2 / 9.6 mm; 70 mm 2 - 9.45/9.95 mm. For strands with a span of 95 mm 2 fallow in number of darts, indications D can be 11.1 / 11.7 mm or 12.2 / 12.9 mm. Not less important is the savings, but it could have a minimum of mentality when stretching. For cores with a 25 mm 2 - 7.4 kN; 35 mm 2 - 10.3 kN; 50 mm 2 - 14.2 kN; 54.6 mm 2 - 16.6 kN; 70 mm 2 - 20.6 kN; 95 mm 2 - 27.9 kN.

Zavdyaki to the characteristics of the medicality of the CIP provider may be wider for the organization repeated lines power transmission. Zastosuvannya SIP-2 allows you to save money on the supporting fittings - the wires can be assembled with telephone lines, wires with a lower level of operating voltage. Wash the installation of SIP wires to allow you to move safety in the process of operation. It is possible without interruptions to quickly reach any engineering disputes (prompt, other lines of power transmission). Servicing of SIP wires is also safe - during the day of unsafe damage by a strum when the phase wires are under voltage.

Installation of insulation is carried out on a level of 4 m above the ground. According to GOST 15150-69, there are 3 types of climate change SIP-2. Any type of SIP-2 can be laid at t not lower than -20 C. repair robots can be carried out without viknennya line.

Fittings for installation vikoristovuєtsya from specially rozroblenih elementіv krіplennya for SIP іz rіzny vein.

• Anchors of wedges for hard fastening of insulated load-bearing neutral without insulating ball. Anchor fasteners (RA - 1000, RA - 1500, RA - 2200) for SIP-2 with a double veneer, the cores are wound from an aluminum alloy with plastic wedges and an internal part. During installation, the cable is laid and squeezed between wedges;
• The fastening anchors DR-1600 S, DR-1000 are to be fixed for fixing the supporting conductor;