Cable AAShv: decoding, design, technical characteristics

The AAShv cable is used for installing power networks.
It uses an aluminum core as the core. High performance parameters have made the product very popular, the same goes for reliability, low weight and durability. The product is equipped with an additional layer of insulation, therefore it is resistant to low and high temperatures, humidity, and solar radiation.

In 1996, the name of the product changed; now it lacks the last letter “U” (ААШвУ). Previously, it was used to designate wires that could withstand high temperature loads. At the same time, modern products do not differ in design from AAShvU.

This wire may include 1, 3, 4 aluminum cores made from one or more wires. Their shape also comes in different shapes - round or sector. Paper insulation impregnated with a special composition with high viscosity is used as an insulating layer covering the current-carrying part.

Decoding

Product marking indicates the main properties and characteristics. Each index contains certain information that allows you to determine the scope of application of the product. Decoding of cable AAShv:

• aluminum core - A;
• armoring and covering layer of aluminum - A;
• external insulator - pressed protective polyvinyl chloride hose - Sw.

In addition to the main wire, there are also modified products. For example, TSAAShv is equipped with impregnated paper insulation with a high viscosity impregnating composition, and ASShv is equipped with a lead sheath.

AAShv

Current-carrying conductors must comply with classes 1 or 2. The conductors must be single-wire or multi-wire in accordance with the table.

Current-carrying conductors of single-core cables of all cross-sections and multi-core cables with a cross-section of up to 16 mm2, as well as multi-core cables with current-carrying conductors of all cross-sections having separate sheaths, must be round in shape.

Conducting conductors of belt-insulated cables with a cross-section of 25 mm2 or more must be sector or segment shaped. It is allowed to manufacture cables with round conductors with a cross-section of up to 50 mm2.

Multi-wire sector and segment cable cores must be sealed during the manufacturing process.

The radius of curvature of single-wire sector cores must be at least 0.5 mm.

The nominal cross-sections of the neutral conductors, in the case of a four-core structure with an unequal cross-section of the main and neutral conductors, are indicated in the table.

Nominal insulation thickness of single-core cables

Nominal insulation thickness of multi-core cables

The paper insulation of cables must be impregnated with a viscous or non-drip insulating impregnation compound. In impregnated paper insulation, the tapes should not have folds or tears.

The insulating impregnating non-drip composition should not leak out at the long-term permissible heating temperature of the cable cores.

In paper insulated cables for voltages of 6 kV and more, the coincidence of more than three tapes located one above the other and two tapes directly adjacent to the core or screen superimposed on the core is not allowed.

The coincidence of longitudinal folds or cuts over a length of more than 50 mm in two tapes located one above the other is considered one coincidence.

The insulated cores of multi-core cables must be twisted, filling the spaces between the cores with paper bundles.

Insulated sector cores of multi-core cables for a voltage of 1 kV can be twisted without filling.

The insulated cores of multi-core cables must have a distinctive color or number designation.

The color marking must be durable, not erasable and distinguishable. Marking should be done using colored tapes on the cores or natural colored tapes with stripes that differ from each other in color.

Marking with numbers is done by printing or embossing and must be legible. The color of the numbers when printed must differ from the color of the core insulation. The numbers must have the same color.

With a digital designation, the first core should have the number 1 on the insulation surface or the top strip, the second core should have the number 2, the third core should have 3, and the fourth core should have 4. In this case, number 1 corresponds to white or yellow, number 2 to blue or green, number 3 to red or crimson, number 4 - brown or black.

The insulation of a conductor of a smaller cross-section (zero) can be of any color and may not have a digital designation.

When designating insulated cores with numbers, the distance between them should not be more than 35 mm.

Belt insulation with a nominal thickness in accordance with the table must be applied over the twisted insulated cores of multi-core cables

Under the cable sheath on the surface of the insulation or under the belt insulation on a special tape, no more than every 300 mm, the identification number of the manufacturer and the year of manufacture of the cable must be clearly marked.

In cables with a diameter under the sheath of less than 20 mm, the use of a colored distinctive thread is allowed.

The tape should be made of natural-colored paper. The absence of tape along a cable length of more than 1 m is not allowed. The width of the tape is at least 10 mm. The height of the cipher is at least 6 mm.

Features and Benefits

To identify the cores in stranded conductors, the insulating layer is painted in a certain color. For cable brand AAShv, it is possible to use white (yellow), blue, black and red dyes, as well as some of their shades (green, brown, crimson). Coloring can be done in bulk or applied as a separate strip of a certain color.

An alternative option is to apply numerical markings. For this purpose, Arabic numbers 1-4 are provided, which are distributed along the length of the insulator with a certain pitch.

Description and design

This is a power cable that has a composite structure. The protective shell consists of strips made of aluminum. Next, the cord is covered with bitumen paper and standard polyvinyl chloride insulation. The cores themselves are protected by paper containing some non-drip-resistant substance that has the properties of a dielectric.

The cores usually consist of one or more wires, which have a sector shape. Such a wire refers to conductors with a large cross-section (the minimum is 50 sq. mm). The characteristics of AASHv do not provide for a cable with a small diameter. Its dimensions start from 25 mm and reach 800 mm. The number of conductors ranges from one to four.

The flexibility class of a wire with a single-wire core is 1, and with multi-wire cores is 2. Each wire is covered with a layer of several components:

1. A separate insulating layer consisting of a paper base and special impregnation.
2. A common sheath called the cingulum.
3. Paper twists. They are placed between the cores.
4. Sheet aluminum. A kind of armor is made from this material.
5. A protective layer consisting of bitumen and polyethylene.
6. The final layer of insulation. It is made from polyvinyl chloride.

The AAShv wire is used in electrical networks, the minimum voltage of which is 6000 volts. It also has an additional layer of paper, which is capable of conducting electricity. This is necessary for greater cable protection. The component is placed between the screen and the intermediate insulation.

The color marking is the same as for other wires of this class. AASHv has red, white (in some cases yellow), blue, and black veins. Other colors may be used. Cases where the insulating layer is not completely painted, but has only one strip of the required color, are also considered acceptable.

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Also, sometimes the manufacturer puts numbers on the wires instead of color. This makes it a little more difficult to decipher the AAShv brand cable, since the color indication is more familiar. Each conductor is assigned a number in the range from 1 to 4.

Wire composition

The aluminum power cable AAShv includes:

1. The conductive part is made of aluminum, multi-wire for sections 50-800 mm2, single-wire - up to 240 mm2.
2. Uniquely colored insulating layer wrapped in impregnated paper.
3. Fill the space between the wires with a paper tow.
4. Covered with paper insulation.
5. Paper screen (conductive).
6. Aluminum tube.
7. Bitumen and polyethylene terephthalate film.
8. External polyvinyl chloride coating with low flammability.

AAShv

AAShv - power cable with aluminum conductors, with impregnated paper insulation, in an aluminum sheath, in a protective hose made of polyvinyl chloride plastic.

Standard GOST 18410-73; TU 16.K71-269-97; TU 16. K09-143-2004 OKPD2: 27.32.14.112

Explanation of cable AAShv - 1kV A - aluminum conductor; A - aluminum shell; Shv - pressed polyvinyl chloride protective hose; 1kV - rated voltage

Design 1. Aluminum conductor; 2. Phase paper insulation impregnated with a viscous insulating impregnating compound; 3. Filling with paper tows; 4. Belt paper insulation impregnated with a viscous insulating impregnating compound; 5. Aluminum shell; 6. Sublayer of bitumen and PET film; 7. Outer cover made of PVC plastic; Application

The cables are intended for use: - in the ground (trenches), if during operation the cables are not subject to tensile forces; - in the ground (trenches) with low and medium corrosive activity with the presence or absence of stray currents, with high corrosive activity with the absence of stray currents; — in the air in the absence of danger of mechanical damage during operation; - in dry or damp rooms (tunnels), channels, cable mezzanines, shafts, collectors, industrial premises, partially flooded structures in the presence of an environment with weak, medium and high corrosive activity; — in fire hazardous areas; — in explosive areas; The cables are designed for inclined and horizontal routes; The cables can be used in areas subject to vibration; Cables do not spread flame when laid alone.

Specifications

Diameters and masses

Specifications

Technical characteristics of cable AAShv:

When laid in groups, they do not support or spread combustion.

Parameters, characteristics, purpose

Insulation:

The purpose of insulation is to provide the necessary electrical strength. The layer depends on the nominal parameters and design:

• Monolithic conductors,

• Protected stranded conductors have the ratio,

The insulation resistance of one kilometer of length is equal, mOhm:

• 100, voltage 1000 volts;
• 200, over 6000.

Conductors

The cross-section and material of the core determines the amount of electrical resistance:

Examination

High-voltage products are tested at voltages:

For products of 6 kV or more, a four-hour test is carried out:

Temperature conditions

The use of cable paper as insulation made it possible to expand the operating temperature range, °C:

• Normal interval, -50 ÷ +50;
• Maximum permissible humidity 98%, 35
• Laying the wire without heating is prohibited, below, 0;
• Long-term permissible heating, lasting no more than 4 seconds of short circuit, with overload up to 8 hours continuously:

The service life depends on the technical condition of the cable, more than 30 years.

Price

You can purchase this wire from us at a competitive price in record time. This is due to the fact that we work directly with manufacturers, which reduces the cost of the product and the risk of purchasing low-quality and non-original goods.

You can purchase wire from the assortment available in the warehouse or place an order from the manufacturer. We deliver cable and wire products to any city in Russia, cooperate with individuals and legal entities, sell goods at retail and wholesale.

To formulate a profitable commercial offer, you must leave a request on the website or send it by email. Our employees will quickly formulate the terms of purchase, after which we can immediately begin shipping. There are promotions and special offers for regular customers, which allows you to save on a quality product. The price is determined based on the type of wire, its design and materials, as well as a number of other factors. For detailed information, contact our consultants or leave a request.

Cable AAShv - 10 kV

Cable encyclopedia → Power cables with impregnated paper insulation AAShv - 1 kV AAShv - 6 kV AAShv - 20 kV AAShv - 35 kV

Cable design ААШв - 10 kV

1. Conductive aluminum core corresponding to class 1 or 2 according to GOST 22483-2012: - single-wire round 16...50 mm2;
— single-wire shaped 25…240 mm2; - or multi-wire shaped 70...240 mm2.2. Paper core insulation impregnated with a viscous compound, nominal thickness 2.75 mm. 3. Filling the gaps between crowded wires with strands made of paper no more than 0.08 mm thick.4. Belt paper insulation impregnated with a viscous compound, nominal thickness 1.25 mm. 5. Screen made of electrically conductive paper. 6. Hermetic aluminum shell in accordance with GOST 24641-81. 7. Protective cover type “Shv” according to GOST 7006-72: - bitumen composition, viscous adhesive composition or bitumen; — polyethylene terephthalate tape; — pressed polyvinyl chloride protective hose with a thickness of at least 1.8...3.1 mm.

A

_

A

Shv

—

10kV

aluminum core impregnated paper insulation aluminum sheath PVC hose rated voltage 10 kV

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Installation and operating conditions

Installation is carried out in closed and open ways:

• in the ground;
• by air;
• overpasses, bridges, pipelines;
• in underground structures;
• at high humidity of premises, risk of flooding;
• in an aggressive environment.

When laying a route, environmental parameters should be monitored. Installation without preheating is allowed only at positive temperatures. It is also necessary to minimize tensile stresses, which can reduce the quality of the product and its technical characteristics.

When laying in the ground, it is necessary to eliminate the risk of stray currents due to high corrosive activity; if this indicator is low or average, their occurrence is allowed.

When installing a main line from AAShv wire in water, it is worth remembering that the design load increases by 10%.

Areas of use

The main area of ​​application of the AAShv cable is the transmission of high voltage alternating or direct current in stationary networks - for example, between substations. The climatic zone of operation is UHL, that is, it is intended for moderate and cold climates. AAShv wire can be used in explosion- and fire-hazardous premises of all classes except B-Ia, including in areas with increased vibration - on bridges, overpasses, pipelines, etc. Capable of withstanding moderate corrosive activity of the environment, as well as high corrosiveness in the absence of pickup currents.

The best manufacturers

The cable and wire products market offers a wide range of products, when choosing which you should be guided by the advice of experts and the reputation of the manufacturer. We recommend choosing products made by:

• Lyudinovo cable;
• Sevkabel;
• Tatkabelem;
• Kamkabel;
• Sarankable.

This guarantees high quality, compliance with industry standards, excellent technical characteristics, and durability of the product. These AAShv manufacturers are the most in demand today. At the same time, you should beware of fakes that have a short service life and not such high performance parameters.

ААШв on 1; 6; 10 kV.

Power cable with aluminum conductors in impregnated paper insulation in an aluminum sheath.

GOST 18410-73

1. Single- or multi-wire conductor (1) - made of aluminum classes 1 or 2 according to GOST 22483
2. Core insulation (2) is made of impregnated cable paper in accordance with GOST 10751
3. Filling the gaps between the cores (3) is made of paper tows.
4. Belt paper insulation impregnated with non-drip insulating compound (4)
5. Screen (5) - made of electrically conductive paper for 6 and 10 kV cables
6. Smooth aluminum shell (6) - according to GOST 24641
7. Cushion for PVC hose (7) - based on bitumen or bituminous composition and PET film.
8. The outer shell (8) is made of PVC plastic.

AAShv cables are used for stationary installation in electrical networks for voltages up to 10 kV with a frequency of 50 Hz. Use in DC electrical networks is allowed.

The cables are used in macroclimatic regions with temperate and cold climates in accordance with GOST 25870.

During operation, cables should not be subject to tensile stress. The cables are operated in the ground (trenches) with low and medium corrosive activity without stray currents.

Technical characteristics and service life

1. AAShv cables are operated at temperatures from minus 50 °C to plus 50 °C.
2. The cables are operational at relative humidity up to 98% at temperatures up to 35 °C, according to GOST 15510-69.
3. The electrical insulation resistance must be at least 100 MOhm per km of cable length.
4. Test voltage and long-term permissible temperature of conductors
   

   Rated voltage, kV	Test voltage, kV	Long-term permissible temperature, °C
   1	4	80
   6	17	80
   10	25	70

5. The warranty period is 54 months from the date of commissioning.
6. The service life of the AABL cable is at least 30 years.

Operating instructions:

1. Laying the AAShv cable without preheating must be done at an air temperature of at least 0 °C.
2. The minimum bending radius of the AAShv cable is 25 outer diameters.
3. The level difference when laying the cable should not exceed the following values:
   for 1 kV cable - 25 m;
4. for 6 kV cable - 20 m;
5. for 10 kV cable - 15 m.

E—solid core, R—circle, S—sector; ozh - single-wire core.

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