Which wire corresponds to GOST 7399 97. Nominal thickness, mm

PVS wire is formally a wire with a rather narrow purpose. Experts define PVS as a wire intended for detachable and temporary connections of power loads. However, in everyday life we ​​very often come across PVS: with its help, almost all electricity consuming devices that require a detachable connection are connected to the network (this terrible phrase hides a plug and socket).

Versatility PVS the quality of the wire lies in its convenience and universal characteristics: high flexibility and great wear resistance. PVS You can bend it any way you want: it will withstand a large load, both in terms of breaking and breaking.

Thus, we define PVA as a wire with twisted copper wires With PVC insulated, with PVC sheath, flexible, for voltages up to 380 V for 380/660 V systems.

PVSn is the same wire, however, not intended for reinforcement with permanent fittings.

PVS wire design

The conductor is copper or tinned copper (at the consumer’s request, when ordering, add the letter “l” to the wire grade)

Insulation is made of PVC plastic.

Twisting - insulated cores are twisted without filler. Insulated cores of five-core wires can be twisted around the core.

The shell is made of PVC plastic. The sheath in the wires is made in such a way that it gives them a round shape.

When repairing and replacing outdated electrical wiring, it is often necessary to calculate in advance how many and what size (diameter) channels will need to be made for laying the wires.

We hope the following reference table will help with this:

3.3. The construction length of wires and cords must be at least 50 m. No more than 10% of segments with a length of at least 5 m are allowed in a batch.

It is possible to supply wires and cords of any length agreed with the consumer.

By agreement with the consumer, SHOG brand cord can be supplied measured lengths. The measured length of the cord should be (1.2±0.03), (1.7±0.06) or (2.2±0.06) m.

3.4. Examples of symbols:

• Wires of the PVS brand with two cores with a cross-section of 0.75 mm 2, intended for reinforcement with permanent fittings, version U:
  PVS-U 2x0.75 GOST 7399-97
• The same, execution T:
  PVS-T 2x0.75 GOST 7399-97
• Wires of the PVS brand with three main cores with a cross-section of 0.75 mm 2, intended for reinforcement with permanent fittings:
  PVA 3x0.75 GOST 7399-97
• Wires of the PVS brand with two main and grounding conductors with a cross-section of 0.75 mm 2, intended for reinforcement with permanent fittings:
  PVA 2x0.75+1x0.75 GOST 7399-97
• Wires of the PRS brand with two cores with a cross-section of 0.75 mm 2, not intended for reinforcement with permanent fittings, with tinned cores, in a green sheath:
  PRS NLC 2x0.75 GOST 7399-97
• SHOG brand cord intended for reinforcement with permanent fittings:
  SHOG GOST 7399-97
• The same, measured length 1.7 m:
  SHOG-1.7 GOST 7399-97;
• The same, spiral:
  SHOG-S-1.7 GOST 7399-97

(Changed edition, Amendment No. 1).

4. TECHNICAL REQUIREMENTS

Wires and cords must comply with the requirements of this standard and be manufactured in climatic versions according to GOST 15150:

(Changed edition, Amendment No. 1).

4.1. Characteristics

4.1.1. Design requirements

4.1.1.1. The conductive cores of wires and cords, except for the SHOG brand cord, must be made of copper or tinned copper wire in accordance with Table 2 and meet the requirements of GOST 22483 and TU 16-505.850.

The direction of twisting of wires into the core is left.

Tinsel current-carrying conductors of the SHOG brand cord must comply with the requirements of TU 16-705.129.

Current-carrying conductors of wires and cords with polyvinyl chloride and rubber insulation, at the request of the consumer, wires and cords with rubber insulation intended for reinforcement with permanent fittings, and with rubber insulation, version T, must be made of tinned copper wires.

(Changed edition, Amendment No. 1).

4.1.1.2. The conductive cores of wires and cords must be insulated with polyvinyl chloride plastic or rubber in accordance with tables 1 and 2. Eccentricity coefficient polyvinyl chloride insulation- no more than 10%, rubber - no more than 15%.

(Changed edition, Amendment No. 1).

4.1.1.3. Parallel-laid cores of cords of the ShVP and SHOG brands must have a separation between the cores. The insulation thickness between the cores must be at least 1.6 mm.

The height of the separating section of the SHOG brand cord should be no more than 0.9 mm. The insulation between the cores, except for the SHOG brand cord, must be separated with a force of 3 to 30 N.

(Changed edition, Amendment No. 1).

4.1.1.4. The insulation, except for the SHOG brand cord, should fit tightly to the current-carrying core, but can be easily separated.

4.1.1.5. Insulated cores of wires and cords of the PVS, PRS, PRM, PSG, ShVL brands must be twisted without filler. Insulated cores of five-core wires can be twisted around the core.

The insulated cores of the ShRO brand cord must be twisted with a yarn filler.

It is allowed to twist two insulated conductors of a ShRO brand cord without filler (provided that the two twisted insulated conductors have a round cross-section) for sale on the domestic market, while a separator in the form of a film or tape can be applied over the twisted conductors.

(Changed edition, Amendment No. 1).

4.1.1.6. The insulated cores of wires and cords of the ShVVP, ShVL, PVS, PVSP, PRS, PRM and PSG brands must be covered with a sheath of polyvinyl chloride plastic or rubber in accordance with Tables 1 and 2.

The sheath on cords of the ShVL, PVS, PRS, PRM and PSG brands must be applied so that it fills the gaps between the cores, giving the wire or cord a round shape.

It is possible to apply a sheath and fill the gaps between the cores using combined extrusion. The filling can be made of polyvinyl chloride plastic, foamed or filled polyvinyl chloride plastic, or unvulcanized rubber. In this case, there should be no harmful interaction between the filling, insulation and shell materials.

The sheath (sheath and filling) must be easily separated from the insulation of the cores and the insulated load-carrying element without damaging the insulation.

It is allowed to apply a synthetic film under the sheath along the twisted conductors. The destruction of the film after application of the shell is allowed.

(Changed edition, Amendment No. 1).

4.1.1.7. On the surface of the sheath (insulation of cords without sheath) there should be no dents, dents, thickenings, sagging or ribbing that would take the dimensions of wires and cords beyond the limits of permissible deviations, as well as bubbles and cracks visible without the use of magnifying devices.

For cords of the SHOG-S brand, dents from the clamps are allowed on the unwound linear ends at a length of no more than 10 mm from the ends of the cords: the thickness of the insulation at the location of the dents should not be less than 0.3 mm.

The insulated cores of sheathed wires and cords and ShRO brand cords must be easily separated from each other without damaging the insulation.

The surface quality of the braided cord of the ShRO brand must comply with RD 16.171.

(Changed edition, Amendment No. 1).

4.1.1.8. The color of the sheath (insulation of cords without sheath), braiding of wires and cords must correspond to that specified in Table 6.

4.1.1.9. The color of the insulation of the main conductors and the color of the insulation of the grounding conductors of wires and cords must correspond to those indicated in Table 7.

The insulation of the grounding conductors should be green-yellow in color.

On any section of a 15 mm long grounding conductor, one of the colors must cover at least 30 and no more than 70% of the insulation surface, and the other - the rest.

The color of the insulation of single-core wires of the PSG brand can be any.

Table 6

(Changed edition, Amendment No. 1).

Table 7

(Changed edition, Amendment No. 1).

4.1.1.10. The colors of wires and cords must be agreed upon between the consumer and the manufacturer. In the absence of an indication of specific sheath colors (insulation of cords without sheath), the manufacturer makes wires and cords at his own discretion in accordance with Table 6. In two-core wires and cords, insulated cores of the same color are allowed as agreed with the consumer.

The color of the sheath (insulation of cords without sheath) of wires and cords made of polyvinyl chloride plastic compound type T should not be white and/or natural.

4.1.2. Electrical Requirements

4.1.2.1. PSG brand wire must withstand the test alternating voltage 2500 V, wires and cords of other brands, with the exception of the SHOG-S brand cord, - 2000 V with a nominal frequency of 50 Hz for 5 minutes without immersion in water.

The SHOG-S brand cord must withstand a test in water with an alternating voltage of 2000 V with a nominal frequency of 50 Hz for 5 minutes.

4.1.2.2. Wires and cords after exposure to water at a temperature of (20±5) °C for 1 hour must withstand an alternating voltage test with a frequency of 50 Hz for 15 minutes:

• 2500 V - PSG brand wire;
• 2000 V - wires and cords of other brands.

(Changed edition, Amendment No. 1).

4.1.2.3. Insulated cores of wires and cords, with the exception of the SHOG and SHVD brands, after exposure to water for 1 hour at a temperature of (20±5) °C, must withstand an alternating voltage test of 1500 V for 5 minutes with an insulation thickness of up to 0.6 mm inclusive , 2000 V - with insulation thickness over 0.6 mm and 2500 V - PSG brand wires with a frequency of 50 Hz.

4.1.2.4. The electrical resistance of the insulation of wires and cords with insulation and a sheath of polyvinyl chloride plastic after being in water for 2 hours at a temperature of (70±2) °C must correspond to that indicated in Table 2.

4.1.2.5. Electrical resistance DC 1 km of core at 20 °C must comply with GOST 22483.

The maximum electrical resistance to direct current of a conductor of a ShRO brand cord can be increased by 3% of the values ​​corresponding to the class of conductors provided for in GOST 22483.

The direct current electrical resistance of 1 km of core at 20 °C of SHOG brand cord should be no more than 270 Ohms.

4.1.3. Mechanical requirements

4.1.3.1. The average tensile strength of the insulation and sheath of wires and cords made of polyvinyl chloride plastic in the initial state must be at least 10 N/mm 2 (10 MPa), elongation at break - at least 150%.

The reduction in the average tensile strength and elongation at break after thermal aging should not be more than 20% of the original average values.

4.1.3.2. Polyvinyl chloride insulation and sheath of wires and cords must be:

a) resistant to deformation at a temperature of (70±2) °C;
b) resistant to cracking.

4.1.3.3. Average values physical and mechanical characteristics Rubber insulation must comply with those specified in Table 8.

Table 8

(Changed edition, Amendment No. 1).

4.1.3.4. The average values ​​of the physical and mechanical characteristics of the rubber shell must correspond to those indicated in Table 9.

Table 9

4.1.3.5. (Deleted, Amendment No. 1).

4.1.3.6. The SHOG brand cord must withstand tensile force during five drops of a load weighing (0.50±0.01) kg at a current load of 0.10 to 0.13 A.

4.1.3.7. Coil cords must withstand at least 45,000 cycles of circumferential rotation when tested for coil endurance.

4.1.3.8. Coiled cords must be elastic. The length of the spiral part of the cords should not increase more than three times under the influence of its own weight and should increase at least four times under the influence of a load weighing (0.15 ± 0.01) kg.

After removing the load, the length of the spiral part of the cords should not be increased by more than 3.5 times its original length.

4.1.3.9. The braiding of the ShRO brand cord must be wear-resistant against abrasion.

4.1.4. Requirements for external influencing factors

4.1.4.1. The rubber insulation and sheath of wires and cords must withstand the thermal deformation test for 15 minutes at a temperature of (200±3) °C and a mechanical stress of 0.20 N/mm 2 (0.20 MPa). In this case, the relative elongation under load should not exceed 175%, after removing the load and cooling the samples - 25% of the values ​​​​obtained before placing the samples in the thermostat.

4.1.4.2. Maximum temperature the current-carrying core during operation should be, °C, no more than:

• 65 - for wires and cords with rubber insulation;
• 70 - for wires and cords with polyvinyl chloride insulation.

4.1.4.3. Wires and cords of execution U, with the exception of cord of the ShRO brand and wire of the PSG brand with conductive cores with a cross-section of more than 16 mm 2, must be cold-resistant at temperatures of minus 40 ° C and minus 25 ° C before aging and after aging, respectively; wires and cords of UHL design, with the exception of PSG brand wire with conductive cores with a cross-section of more than 16 mm 2, minus 25 °C and minus 15 °C before and after aging, respectively.

(Changed edition, Amendment No. 1).

4.1.4.4. The sheath of wires of the PRM and PSG brands must be resistant to oil.

The values ​​of the sheath tensile strength and elongation at break after 24 hours in oil at a temperature of (100±2) °C may differ by ±40% from the initial values.

4.1.4.5. Wires and cords with insulation made of polyvinyl chloride plastic should not spread fire.

4.1.4.6. Wires and cords of type T must be resistant to mold damage.

4.1.4.7. Polyvinyl chloride insulation and sheathing of wires and cords must withstand the weight loss test at a temperature of (80±2) °C for 7 days. The weight loss value should not exceed 2.0 mg/cm2.

4.1.4.8. The braiding of the ShRO brand cord must be heat-resistant.

(Introduced additionally, Amendment No. 1).

4.1.5. Reliability requirements

4.1.5.1. Lifetime of wires and cords, expressed in resistance to alternating bending deformations at rated voltage, there must be, cycles (movements), no less than:

• 15000 (30000) - for ShVD brand cord;
• 60000 (120000) - for SHOG brand cord;
• 30000 (60000) - for wires and cords of other brands with conductors with a cross section of up to 4.0 mm 2 inclusive.

The current load on the cores when testing a SHOG brand cord should be (0.1±0.01) A, for cords with polyvinyl chloride insulation - (1.0±0.1) A. The current load values ​​on the cores of rubber insulated cords are given in the table 9a. In two- and three-core wires and cords, all cores must have a full current load according to Table 9a. In four- and five-core wires and cords, the full current load is applied to three cores or all cores must have a load In, A, calculated by the formula

A signal current is passed through insulated conductors that do not carry a current load.

Table 9a

The nominal tensile force and diameter of the rollers must be as specified in Table 10.

Table 10

(Changed edition, Amendment No. 1).

4.1.5.2. The established trouble-free operating time must be, h, not less than:

• 3000 - for cords of the ShVP, ShRO and ShVD brands;
• 5000 - for wires and cords of the ShVVP, ShVL, PVS, PVSP and PRS brands;
• 12000 - for wires and cords of the ShVVP, ShVL, PVS, PVSP brands used in stationary electrical appliances.

(Changed edition, Amendment No. 1).

4.1.5.3. The service life of wires and cords with a resource in accordance with 4.1.5.1, with an established trouble-free operating time in accordance with 4.1.5.2 and compliance with the operating, storage and transportation conditions established by this standard must be, years, not less than:

• 4 - for cords of ShRO brands;
• 10 - for cords of the SHOG, SHOG-S brands;
• 6 - for wires and cords of other brands;
• 10 - for wires and cords of the ShVVP, ShVL, PVS, PVSP brands used in stationary electrical appliances.

(Changed edition, Amendment No. 1).

4.2. Labeling requirements

4.2.1. Marking of wires and cords must comply with the requirements of GOST 18690 with the additions set out in 4.2.2-4.2.4.

4.2.2. On the surface of the sheath or insulation of wires and cords without a sheath, except for the ShRO brand cord, continuous marking must be applied containing:

• mark size of wire (cord);
• year of issue;
• code designation or trademark of the manufacturer.

(Changed edition, Amendment 2002)

A marking is considered continuous if the distance between the end of one marking and the beginning of the next does not exceed:

500 and 550 mm - for wires and cords with polyvinyl chloride and rubber insulation, respectively, if the marking is applied to the sheath;

200 and 275 mm - for wires and cords with polyvinyl chloride and rubber insulation, respectively, if the marking is applied to the insulation of wires and cords without a sheath.

Markings are applied by paint, embossing, or laser.

Labeling must be clear and easy to read.

By agreement with the consumer, wires and cords intended for reinforcement can be manufactured without markings.

The ShRO brand cord must be marked with the identification thread assigned to the manufacturer.

By agreement with the consumer, it is allowed to use identification thread in wires and cords that are not intended for reinforcement with permanent fittings.

(Changed edition, Amendment No. 1).

4.2.3. The label attached to the coil, drum, box, box, as well as on the individual package or label included in the package must indicate:

• name of the manufacturer or its trademark;
• symbol wire or cord;
• designation of this standard;
• length of wire or cord in meters or number of measured segments;
• gross weight in kilograms (for drums, boxes or boxes);
• date of manufacture (year, month);
• mark of conformity if there is a certificate.

The label must bear a technical control stamp.

(Changed edition, Amendment No. 1).

4.2.4. Marking of wires and cords in coils intended for retail distribution must be done on a label attached to the coil.

4.3. Packaging requirements

4.3.1. Packaging of wires and cords must comply with the requirements of GOST 18690 with the additions set out in 4.3.2.

4.3.2. Wires and cords, except for the SHOG-S brand cord, must be wound into coils or onto drums. The coils must be tightly wound without displacement or overlapping of the turns and packed in heat-shrinkable film.

It is allowed to pack coils in polyethylene or polyvinyl chloride film, or individual bags, as well as other types of packaging that ensure the safety of wires and cords during storage and transportation.

Cords of the SHOG and SHOG-S brands, supplied in measured lengths, must be packed in boxes or wooden boxes, lined inside with wrapping paper.

Weight of the cargo package intended for retail, should not exceed 15 kg.

(Changed edition, Amendment No. 1).

5. ACCEPTANCE RULES

To check the compliance of wires and cords with the requirements of this standard, install the following types control tests: acceptance, periodic, standard.

5.1. Acceptance tests

5.1.1. Wires and cords are presented for acceptance in batches. Wires and cords of the same size, made of the same material, on the same type are accepted as a batch. technological equipment, simultaneously presented for acceptance.

The batch size must be:

• from 0.5 to 20 km - for wires and cords supplied in construction lengths;
• from 10 to 10000 pcs. - for cords supplied in measured lengths.

5.1.2. The composition of the tests and its division into groups must correspond to those indicated in Table 11.

Table 11

Testing of wires and cords (except for the SHOG-S cord according to 4.1.1.7 and 4.1.2.1) is carried out according to a continuous or selective single-stage control plan in accordance with Table 11 with an acceptance number C = 0. Samples are drawn up by random selection.

5.1.3. Testing of SHOG-S brand cord for compliance with the requirements of 4.1.1.7 and 4.1.2.1 should be carried out according to a two-stage sampling plan on samples n 1 = n 2 = 3, compiled by random selection, with an acceptance number C 1 = 0 and a rejection number C 2 = 2 for the first sample and acceptance number C 3 = 1 for the total (n 1 and n 2) samples.

5.1.4. Testing of wires and cords for compliance with the requirements of 3.3, 4.1.1.1 and 4.1.1.5 is carried out during the production process using the control method according to 6.1.1 and 6.1.2.

5.2. Periodic testing

5.2.1. The composition of the tests and its division into groups must correspond to those indicated in Table 12.

Table 12

5.2.2. Tests are carried out once every 12 months, unless other periods are specified for specific tests.

5.2.3. Group tests are carried out on separate samples.

5.2.4. Tests in group P-1, in addition to testing for compliance with 4.1.3.1 and 4.1.3.2, are carried out according to selective single-stage control plans with an acceptance number C = 0 on at least five samples taken from different coils or drums that have passed acceptance tests . Tests for compliance with 4.1.3.1 and 4.1.3.2 must be carried out on at least two samples.

Tests according to group P-1 and 4.1.4.3 and 4.1.5.1 must be carried out on individual samples once every 36 months.

5.2.5. Tests in groups P-2, P-3 are carried out according to a two-stage sampling plan with a sample volume of n 1 = 5, n 2 = 10 samples.

For the first sample, the acceptance number C 1 = 0, the rejection number C 2 = 2. If the number of defects in the first sample is equal to 1, the second sample is checked. The acceptance number of the total (n 1 and n 2) sample is C 3 = 1. The samples include random selection of samples from batches of the current release.

5.2.6. Wires and cords that have been subjected to periodic testing, are not subject to shipment.

5.3. Type tests

5.3.1. Type tests are carried out by the manufacturer to verify the compliance of wires and cords with the requirements of this standard when changing the design, technology, or materials used, if these changes may affect their quality.

Tests are carried out according to the program approved in in the prescribed manner. Based on the test results, documented in a protocol or act, a decision is made on the possibility and advisability of making changes to the technical documentation.

1. Current-carrying core- copper or tinned copper (at the consumer’s request, when ordering, the letter “l” is added to the wire grade, as well as in wires, intended for reinforcement with permanent reinforcement and in version T), round, stranded, class 5 according to GOST 22483.
2. Insulation- made of PVC plastic. The colors of the insulation of the conductors in the wires are indicated in the Appendix.
3. Twist- insulated cores are twisted without filler. Insulated strands of five-core wires can be twisted around the core.
4. Shell- made of PVC plastic. The sheath in the wires is applied to fill the gap between the wires, giving the wires a round shape. The colors of the wire sheath are indicated in the Appendix.

To connect electrical appliances to and power tools for home care and repair, washing machines, refrigerators, small mechanization products for gardening and other similar machines and equipment, and for the production of extension cords for voltages up to 380/660 V, rated frequency 50 Hz.

Wires of the PVS brand are used for single installation in cable structures and production premises. Group installation is permitted only in outdoor electrical installations and production premises, where only periodic presence of maintenance personnel is possible, and passive fire protection must be used.

Fire hazard class according to GOST 31565-2012:

Climatic version according to GOST 15150:
U - accommodation categories 1, 2, 3
T - accommodation categories 4
UHL - accommodation categories 4
- Operating temperature range for wires of version U: from -40° to +40°С
- Operating temperature range for wires of other versions: from -25° to +40°С
- Maximum temperature of the conductor during operation: +70°С
- Wires after exposure to water at a temperature of (20±5)°C for 1 hour must withstand an alternating voltage test of 2000 V at a frequency of 50 Hz for 15 minutes.
- Wires do not spread flame when laid individually
- Wire life, expressed in resistance to alternating sign bending deformation at rated voltage is: not less than 30,000 (60,000) cycles (movements)
- The nominal tensile force and diameter of the roller correspond to those specified in the Appendix.
- The established trouble-free operating time must be: at least 5000 hours
for wires used in stationary electrical devices: at least 12,000 h
- Construction length of wires: not less than 50 m
- Warranty period: 2 years from the date of commissioning
- Wire service life: at least 6 years
for wires used in stationary electrical devices: at least 10 years

Calculated outside diameter and estimated weight of wires

PVS GOST 7399-97, PVSn