PUV wire: technical characteristics, indications for use. PuGV wire - decoding and main characteristics The main properties of the PUGV wire that affect the choice are
2. Insulation - PVC.
Purpose of wires PuGV:
Wires are used for electrical installations for stationary laying in lighting and power networks, as well as for the installation of electrical equipment, machines, mechanisms and machine tools, internal electrical installations for a rated alternating voltage up to 450/750 V inclusive with a rated frequency up to 400 Hz or a direct voltage up to 1000 V inclusive .Operating conditions and installation of wires PuGV:
The wires in terms of design, technical parameters and performance characteristics comply with the requirements of international standards IEC 60227-1:2007, IEC 60227-3:1997, IEC 60227-4:1997.PuGV wire is used for laying in steel pipes, boxes, trays, etc., for the installation of electrical circuits, where increased flexibility is required during laying and installation.
Fire hazard class according to GOST R 53315-2009 - O1.8.2.5.4
Type of climatic modification UHL, placement category 2 according to GOST 15150-69
Requirements for resistance to external influencing factors:
- wires resistant to elevated ambient temperatures up to 65°C
- wires resistant to low ambient temperatures up to -50°C
- wires resistant to high relative air humidity up to 98% at ambient temperature up to +35°С;
Installation of wires is carried out at a temperature not lower than -15°С
Bending radius during installation - not less than 5 Dn
Long-term permissible heating temperature of cores during operation, no more than +700С
The service life of PUGV wires is at least 20 years, provided that the consumer complies with the requirements for transportation, storage, installation and operation
GOST (TU / VDE) PuGV wires:
- GOST 31947-2012 (general GOST);
- TU 16-705.501-2010 (Electrical cable; HKA; Belaruscable; Energy cable; REC/Prysmian; Samaracable; Autowire; Tsvetlit; Sibcable; ROSSKAT; Rybinskcable; Lyudinovkabel; Pskovkabel; NN electrical cable; Uralcable; Sevcable);
- TU 3551-009-42264279-2013 (Coaxial)
Wire PuGV It is a power conductor with copper conductors. Most often it is insulated with polyvinyl chloride and does not have a sheath. It can be used both in the implementation of the wiring of buildings, and for laying power cable lines.
The cable cores consist of a group of tinned copper rods. The number of bars varies by type and manufacturer, usually at least seven. Such cables are used in enclosed spaces to supply fixed devices with electricity. Outdoor laying is allowed, provided that there is protection from direct sunlight and precipitation (canopies and similar devices are used for this).
Application area
In lighting networks, power lines. It is widely used in rooms of varying degrees of humidity - normal, damp, especially damp, with the presence of steam emissions of acids and alkalis. If the ambient temperature does not exceed 40 degrees Celsius, then it can be used to connect launch boxes, light shields, closed cabinets.
Multiple wire bends are allowed. This wire came to replace the wires PV1, PV3, PV4.
Multifunctional wire PuGV is used for electrical installations for stationary laying in networks of various directions (lighting, power networks), installation of electrical equipment, devices, mechanisms and machines with alternating voltage up to 750 V, or direct voltage up to 1000 V.
Name decoding
Explanation of the abbreviation PuGV:
- P - wire;
- U - installation;
- G - flexible;
- B - with PVC insulation.
PuGV performs a connecting function for electrical installations, has one core, the cross-sectional area of \u200b\u200bwhich is determined depending on the size. The flexibility of the core for conductors of this type can be of three classes: 3, 4 or 5 according to GOST standards. The cable can be used in moderate and cold climates (UHL, from +40 to -60 °C) and more severe conditions.
Benefits and Features
Increased flexibility allows you to lay the cable in the box and all kinds of pipes. You can lay lines with a variety of bends and turns. If the wiring does not imply the presence of other types of electrical wires, then the likelihood of fire is minimized. With proper operation, the service life of such a line can be twenty years or more. The service life should be calculated from the date of manufacture.
Supplied without additional protective layers and shells, as PVC is not afraid of light, water and mechanical damage (within reasonable limits).
Design features
It consists of a core that passes electric current and PVC insulation. Flexibility is achieved due to the fact that each current-carrying core consists of several copper wires, which are connected by twisting. Sections from 0.5 mm² to 35 mm² consist of 7 or more wires twisted together.
The flexibility of an electrical wire is inversely proportional to the cross-sectional area: the larger the area, the less flexible the cable. Also, the flexibility depends on the diameter of the individual wires located inside, the larger their diameter, the lower the flexibility index.
Sectional electric wire
The thickness of the insulation depends on the section. It is allowed to use two-layer insulation, but in this case the first layer should be 70 percent of the total thickness of the insulation or more. The coloring is determined depending on the needs of the customer, or standard colors are used.
PVC insulation greatly increases the life of the wiring due to its chemical properties. It decomposes slowly, is not afraid of moisture, extreme temperatures and corrosion, and also has a significant margin of safety, which does not allow rodents to gnaw through the wiring. In addition, it has a special smell that repels rats and mice.
It is worth emphasizing that double-layer PVC cables are safer. The double layer reduces the heating from the current, reduces the possibility of fire and increases the resistance to high temperatures in general. Therefore, PVC electrical wires are often used in high-voltage lines.
Specifications
Flexibility is an important distinguishing feature of this type of cable, the bending radius is measured in outer diameters. Thus, the bending radius of the PuGV is ten or more diameters.
Other mechanical characteristics:
This type of wiring can withstand 450 to 750 volts alternating current at a frequency of 400 Hz or 1000 volts direct current. Withstands ambient humidity up to 98%.
Important! PuGV wire (especially PuGVng-LS) is often used in places of high temperature load - baths and the like, it is considered safer, as it does not burn. Special insulation protects the cable from fire, so in case of fire it only melts. The insulating sheath is able to withstand heating at +160 degrees Celsius. Due to this, PuGVng LS is used as the outputs of electric motors and for charging lighting fixtures with a temperature of +80 to +180 degrees.
Laying method
It is allowed to lay lines in pipes, on insulators, rollers, clicks. It is also laid on top of metal and concrete surfaces, while it is required to place the insulation under the cable.
PuGVng-LS
PuGVng-LS is a low fire hazard cable. Differs in existence of the single copper vein of the increased flexibility. This modification emits low amounts of smoke and gas, and is also non-flammable. PuGVng-LS is used in the construction of lines with an increased risk of fire.
Electric wire of reduced fire hazard
GOST and other legal requirements
Since 2012, the state standard for PUGV lines has been established by the GOST 31947–2012 standard, and the GOST 31565–2012 standard is responsible for fire safety requirements. The modern standard meets international standards. Specifications are determined by the requirements of TU16-705.501-2010.
It should be noted that GOST R 53768–2010, which should have been equal to earlier, has now been canceled and has no legal force.
What is the difference between PuGV and PV-3
The presence of two names often causes confusion. In essence, both abbreviations refer to the same cable, it's just that PuGV is a newer name that corresponds to modern GOST and differs only in increased requirements for flexibility. The outdated standards corresponded to flexibility classes 2, 3, 4, and according to modern standards they should be 3, 4 and 5.
Packaging requirements and quality assurance
The cable must be wound on a drum, or supplied in coils. The minimum length is 100 meters.
Quality control is carried out by external inspection for insulation damage, as well as using special instruments for measuring resistance.
Related videos
wires PuGV, PuGVV, PuV, PuGVng(V)-LS are a subgroup of installation wires widely used for the installation of electrical equipment. Actually, a good idea about the purpose of this type of cable and wire products is given by the decoding of the abbreviation in the names: the common part (Pu) stands for "" (that is, the often used expression "PuGV cable" is not entirely correct), the letter "G" appears in the name wires with a flexible current-carrying core, the letter "B" indicates the presence of insulation from polyvinyl chloride plastic compound; finally, the marking and LS (from the English "low smoke") means that it does not spread combustion and has reduced smoke and gas emission.
The wires of this group comply with the requirements of GOST 31947-2012, the conductive conductors are made of annealed copper wire (class 1, 2 or 5 according to GOST 22483).
PuV - single-core wire with a copper core, with PVC insulation, without sheath. Designed for laying in steel pipes, boxes, trays for mounting electrical circuits.
PuGV - single-core wire with a flexible copper core, with PVC insulation, without sheath. Designed for laying in steel pipes, conduits, electrical wiring trays, where increased flexibility in laying and installation is required.
PuGVV - single-core wire, with a flexible copper core, with insulation and sheath made of polyvinyl chloride plastic compound. Designed for installation of electrical circuits, where increased flexibility in laying and installation is required.
PuGVng (V) - LS - single-core wire, with a flexible copper core, with low fire hazard PVC insulation, without sheath. The wire is characterized by low smoke and gas emission, does not spread combustion.
The PuGV wire is a power conductor, the cores of which are made of copper. PVC is used as an insulating compound. This cable is characterized by the absence of a sheath. Produced in accordance with GOST R 53768-2010. The cores are assembled from tinned copper wires (rods). The number of rods is 7 or more. Operation is carried out in enclosed spaces for stationary units. In the absence of direct exposure to solar radiation, installation under canopies is allowed. Work in the conditions of an atmospheric precipitation is not allowed. With the closed laying method, installation work can be carried out under layers of plaster, in masonry made of bricks and concrete.
Decryption
The PuGV cable is decoded as follows:
- P - the common name for cable conductors, then the wire.
- y - an installation type product used in the wiring of conductor lines.
- Г – wire flexibility index. This marking applies to stranded conductors, as opposed to, for example, cords.
- B - PVC is used as insulation.
Thus, this product is a single-core conductor. Current-carrying elements are made of copper wires twisted together. No sheath, PVC insulation.
The numerical designations that follow indicate the cross-sectional area of \u200b\u200bthe wire in mm 2. For example, PuGV-4. The next letter index characterizes the color marking of the insulation (B - white, K - red, etc.). This condition is discussed when placing an order for a product based on information about the further use of conductor products.
Features and Benefits
Power wire PuGV meets the requirements of numerous international standards based on its design, technical and technological parameters. Due to the great flexibility of the product, it is possible to lay the wire in a box, various pipes, etc.
With a single laying method, there is no risk of fire. The duration of operation is more than 20 years. Duration is calculated from the moment of production. In this connection, NTD has high requirements for various characteristics of the cable.
Information about the manufacturer, as well as product marking, is applied to the surface of the insulation with a stamp or in relief. The designation should not be interrupted, possibly several additional designations, the distance between which should not exceed 500 mm. The above information includes length, manufacturer, production time, weight and GOST number. It has the appropriate confirmation of technical control in the form of stamping and certification marks.
Wire colors
The installation wire PuGV has a variety of colors. The color coating is only continuous. It is possible to cover in the form of double longitudinal strips, which are located diametrically. Each stripe has a natural color. Provided that the PuGV cable is used as a grounding cable, the insulating coating must be yellow-green. When used as neutral wires, blue is used. Color marking is discussed when placing an order.
In the absence of instructions on the color designation, the manufacturer reserves the right to choose. This is possible when ordering, for example, conductors with mixed and transition colors. However, the content of such products must be less than 10% of the total order.
Application
This type of conductor is used to power stationary electrical units in lighting networks and electrical systems. In addition, for the wiring of various electrical devices, devices and mechanisms in enclosed spaces. The magnitude of the alternating voltage is up to 450-750 V with a frequency of up to 0.4 kHz. In networks with a constant voltage of 1 kV.
This conductor complies with the rules and regulations of the following international standards for design and technical and technological characteristics: IEC 60227-1:2007, IEC 60227-3:1997, IEC 60227-4:1997.
The products are used for laying in electrical installations requiring increased flexibility in the laying process. Laying is possible in boxes, pipes, etc.
Wire Composition
- The conductors are made from tinned copper wires in accordance with GOST 22483-77.
- The insulation is made of colored PVC compound.
Specifications
| Climate zone type | UHL |
| Room type | II according to GOST 15150-69 |
| Temperature operating limits | from -50?С to +65?С |
| The cable has increased moisture resistance | at the level of moisture content?=98% and temperatures t=-15?C |
| Installation work is carried out at temperatures | not less than t=-15?C |
| Wire section PuGV | 0.5?240 mm 2 |
| With a single method of wiring | fire does not spread |
| Continuously admissible heating lived during operation | is less than 70?С |
| Service period | over 20 years since production |
Buy wire PuGV
Our company supplies these products throughout Russia. The process of buying and selling is based on the availability of goods in stock or on order from manufacturers. You can leave us your application in a way convenient for you (via the website or by e-mail). The product has all the necessary certificates and quality marks.
The price of PuGV wire is calculated depending on the amount of copper used during its production. Additional discounts are available depending on your volumes. You can purchase this wire and determine the exact cost by sending us your request.
Delivery of goods is carried out within a day after the payment. For the minimum period, a commercial offer will be drawn up for you, discounts and a method of delivery of goods will be selected.
Test methods and product quality
The products can be checked with the help of an external inspection, on the basis of which a preliminary assessment of the condition of the PU-GV cable is made in case the measured values and parameters are in doubt.
When determining the electrical resistance, it is necessary to properly check the contact point of the test leads. It is allowed to determine the specific resistance of the cable. A unit of conductor is measured with further calculation for the entire length.
The final conclusion about the state of quality is obtained after laboratory tests. However, the cable has several advantages that allow it to be widely used with a guarantee and high reliability.
Wire installation
The conductor is used in lighting networks and power systems of a stationary type. Provides power to electrical installations, various machines and objects.
During installation work at a temperature of -15 ° C, the cable is wound on a cylinder with a diameter of 5D, where D is the outer diameter of the wire. One example is stacking in a refrigeration plant.
Top Producers
A wide range of products is presented on the cable products market. However, this is not a guarantee of high quality products. Not every product meets the requirements of GOSTs. Manufacturers of PuGV wire that have proven themselves in the market: Kavkazkabel, Energokabel, Kamkabel.
The PuGV 1x25 wire is a power-type assembly product, which includes a copper core made of a single wire with a cross-sectional area of 25 mm2. The insulating layer is PVC with different colors. Regulatory support - GOST 31947-2012. A conductor is required when laying ...
The power wire PuGV 1x95 has a current-carrying part made of copper. For its production, a bundle of wires is used, the total area of \u200b\u200bwhich is 95 mm2. The next layer is an insulating PVC compound with various colors: black, blue, gray, brown, red, yellow-green, …
For the electrical connection of equipment operating under shaking and vibration, a flexible conductor is required. The installation wire PuGV has gained particular popularity. A successful design ensures the reliability of the installation of machine tools, electrical machines and mechanisms. The availability of the material allows laying stationary networks in industrial premises and housing, with a rated voltage of alternating current up to 450V.
To get acquainted with this wonderful product, characteristics, application, the material of this article will help.
GOST R 53768-2010 defined the marking procedure, the symbols used when marking cables. The name contains an alphanumeric code, decoding occurs from left to right.
| Criterion | Content | Designation |
|---|---|---|
| Product type | Installation wire | Pu |
| Installation cable | Ku | |
| Degree of flexibility | For installations that do not require increased flexibility | No designation |
| Increased Flexibility | G | |
| Sheath and insulation material | Polyvinyl chloride compounds, including low fire hazard and heat-resistant | AT |
| Halogen free polymer compositions | P | |
| Fire safety performance | Flame retardant for single laying | No designation |
| Flame retardant for group laying, with reduced smoke and gas emission (categories A, B, C, D) | ng(A)-LS ng(B)-LS ng(C)-LS ng(D)-LS | |
| Flame retardant for group laying with reduced smoke and gas emission, with low toxicity of combustion products | (A, B, C, D)LSLTx | |
| Flame-retardant in group laying and not emitting corrosive gaseous products during combustion and smoldering - ng (A, B, C, D) | ||
| Non-flammable in group laying and does not emit corrosive gaseous products during combustion and smoldering, with low toxicity of combustion products | ng(A, B, C, D)- HFLTx | |
| Through a hyphen climatic version | Moderate climate, operating temperature up to -25 0С | At |
| Cold areas, up to -40 0C | UHL | |
| Dry or humid tropical climates, provides resistance to fungus and mold spores | E | |
| Size | Number and nominal cross section of conductors | Numbers Xnumbers |
For example, the designation PuGVngHFLTx-T 1x10.0 shows:
- Installation wire, increased flexibility, PVC modified insulation;
- Additives of PVC plastic give additional useful properties. Plastic does not support fire when working in a group, smoldering does not cause the release of aggressive gases, toxic hazardous products;
- Tropical production will protect against the decaying influence of mold in wet and warm rooms;
- A single strand of twisted copper wires, cross-section with a nominal value of 10.0 mm 2.
The PuV wire differs in the design of the conductive core. Monolithic, consisting of one wire, the cross section of which meets the standard. Compared to PUGV, it has a very high rigidity.
Technical specifications
Technical characteristics are fully consistent with the brand, which earlier, until 2010, was called PV. A higher class of flexibility, the only difference, is the PuGV wire.
Correspondence of wire brands according to GOST 6323-79 and TU16-705.501-2010
| GOST 6323-79 | TU16-705.501-2010 | GOST 6323-79 | TU16-705.501-2010 |
|---|---|---|---|
| PV1 (without sheath, section 0.5-95.0 mm2 | PuV (without sheath, section 0.5-400, mm2) | PPV (flat, no sheath) | PuVV (flat, sheathed) |
| PV2 | * - | AR** | - |
| PV3 | *- | APPV** | *** - |
| PV4 (without sheath, section 0.5-10.0 mm2) | PuGV (without sheath, section 0.5 - 400.0 mm2 | - | PuGVV (flat, sheathed, flexible) |
**Wires with aluminum conductors are not provided for production
Dependence of the value of active resistance, maximum diameter, calculated weight on the size:
| Cable PUGV, copper, single-core, flexibility class 5 | |||
|---|---|---|---|
| Nominal cross-section of the core, mm2 | Maximum outer dimensions, mm | Conductor electrical resistance, Ohm/km, no more | Estimated weight, kg/km |
| 0.5 | 2.5 | 39 | 8.9 |
| 0.75 | 2.7 | 26 | 11.9 |
| 1 | 3 | 19.5 | 14.6 |
| 1.5 | 3.5 | 13.3 | 21.6 |
| 2.5 | 4.6 | 7.98 | 36.2 |
| 4 | 5.2 | 4.95 | 51.3 |
| 6 | 6.1 | 3.3 | 72.9 |
| 10 | 7.8 | 1.91 | 120.9 |
| 16 | 9.1 | 1.21 | 185.7 |
| 25 | 10.9 | 0.78 | 289.4 |
| 35 | 11.7 | 0.56 | 387.3 |
The nominal resistance value limits the flow of electrons flowing through the conductor. Exceeding the normal current causes a greater heating of the core. Permissible current, flowing through the core for a long time, does not lead to changes in electrical parameters due to heating. The value of the permissible current is limited not only by the nominal cross section. The mutual inductive influence of the conductors laid together reduces the permissible current according to the data in the table:
| Permissible continuous current for wires in rubber and PVC insulation with copper conductors, A | ||||||
|---|---|---|---|---|---|---|
| Conductor cross section, mm2 | For wires laid | |||||
| Open | in one pipe | |||||
| two single-core | three single-core | four single-core | one two-core | one three-core | ||
| 0.5 | 11 | - | - | - | - | - |
| 0.75 | 15 | - | - | - | - | - |
| 1 | 17 | 16 | 15 | 14 | 15 | 14 |
| 1.5 | 23 | 19 | 17 | 16 | 18 | 15 |
| 2.5 | 30 | 27 | 25 | 25 | 25 | 21 |
| 4 | 41 | 38 | 35 | 30 | 32 | 27 |
| 6 | 50 | 46 | 42 | 40 | 40 | 34 |
| 10 | 80 | 70 | 60 | 50 | 55 | 50 |
| 16 | 100 | 85 | 80 | 75 | 80 | 70 |
| 25 | 140 | 115 | 100 | 90 | 100 | 85 |
| 35 | 170 | 135 | 125 | 115 | 125 | 100 |
| 50 | 215 | 185 | 170 | 150 | 160 | 135 |
| 70 | 270 | 225 | 210 | 185 | 195 | 175 |
| 95 | 330 | 275 | 255 | 225 | 245 | 215 |
| 120 | 385 | 315 | 290 | 260 | 295 | 250 |
The table can be used by selecting the section of the PuGV wire required for installation or repair. We find out in advance the maximum design power consumption for the installed network or section. According to the formula I \u003d P / U, dividing the power value by voltage, we calculate the maximum current. Comparing the obtained value with the tabular data, we select the required section.
The electrical protection of the conductive core is provided by a sufficiently thick layer of high-quality insulation. The thickness of the plastic depends on the nominal cross-section of the conductor, the standard values are given:
| Nominal cross section of the core, mm | Nominal insulation thickness, mm |
|---|---|
| From 0.5 to 1.0 incl. | 0.6 |
| 1.5 | 0.7 |
| 2.5 to 6.0 | 0.8 |
| 10.0 and 16.0 | 1 |
| 25.0 and 35.0 | 1.2 |
| 50.0 and 70.0 | 1.4 |
| 95.0 and 120.0 | 1.6 |
| 150 | 1.8 |
| 185 | 2 |
| 240 | 2.2 |
High-quality insulation should provide a resistance of 5 mΩ per kilometer section at an air temperature of 20 ° C. Mechanical properties provide:
- Adhesion of PVC to copper and unhindered removal of plastic;
- Smooth, dense plastic surface without pores, dents, cracks;
- Stretching before failure - 150%;
- The bending radius is made from five diameters of the insulated conductor.
Temperature characteristics:
- Operation is normal in the range, °С: -40 ÷ +65;
- Working long-term heating, up to °С: +70;
- Short-term, up to 8 hours, heating is allowed, ° С: +80;
- Operability is maintained when overheated by a short-circuit current up to 4 seconds, ° С: +160;
- Installation, without special measures for heating the work area, is prohibited in frost above -15 ° C;
- Keeps resistance to air humidity up to 98% with temperature not more than, °С: +35.
Compliance with the conditions of normal operation will ensure the operation of the PUGV for more than 15 years.
Scope, operation
The parameters that the PuGV wire has correspond to the standard. This allows you to use it as an installation in fixed networks. Insulation properties, strength and a huge range of temperature range allow laying in open and hidden ways. The open method will require the organization of minimal protection with a cable channel or corrugated hose. Under plaster, in building voids, it can be laid without additional protection. Flexibility will fully manifest itself positively when passing through a laying route with numerous turns of channels and gutters, pipes and cable ducts.
For inputs to objects, switching on sockets, it is better to use a hard wire, but the PuGV wire is good when connecting devices and equipment that are not permanently fixed. It is in great demand when laying a lighting network. In places where lighting fixtures are connected, a rigid conductor fracture often occurs.
The use of a soft conductor when connecting a terminal screw, according to the PUE, requires additional trouble. The stripped ends must be half-cut or crimped with special tips that do not allow fluffing of thin wires.
The use of the wire mainly determines the type of manufacture for fire safety:
| Execution type | Designation | Preferred Applications |
|---|---|---|
| Flame retardant with a single gasket with PVC insulation and sheath | No designation | Laying of single lines and execution of power supply circuits for pantographs located in the premises |
| Insulation and sheath made of low fire hazard PVC with low smoke and gas emission | ng-ls | Group laying of lines in the premises of internal (closed) electrical installations. For electrical wiring in residential and public buildings |
| Reduced fume and gas emission, insulated and sheathed with halogen-free polymer compositions | ng-HF | Lines and electrical wiring for group and single laying in office premises equipped with computer and microprocessor technology, entertainment complexes and sports facilities |
| Insulation and sheath made of low fire hazard PVC with low smoke and gas emission and low toxicity of combustion products | ng-LSLTx | For electrical wiring in public buildings, in buildings of preschool educational institutions, specialized nursing homes and disabled people, hospitals and children's boarding schools |
| Reduced smoke and gas emission, with insulation and sheath made of halogen-free polymer compositions with low toxicity of combustion products | ng-HFLTx |
A relatively small increase in the purchase price of modified wire grades will pay off with a guarantee of people's safety.
The disadvantage in the form of a single-core structure is eliminated by using the KuGV installation cable.