- BrandЩучинский завод Автопровод, ОАО
- Country of manufactureBelarus
- Conductor materialCopper
- Wire materialMetal
Provoda in a braid are intended for brushes of electrical machines.
Pshchopl - a wire the copper flexible, consisting of the core twisted from a provolok in a braid from copper provolok.
DESIGN
The design of wires corresponds to the sizes, ukazannymv the table:
| Nominal section of a wire, mm2 | Core | Braid | ||
| System to twist | Quantity a provolok in strand × diameter a provolok, mm | Number of ley | Quantity a provolok in ley × diameter a provolok, mm | |
| 0,75 | 1+6 | 16×0,071 | 16 | 5×0,71 |
| 1,0 | 1+6 | 23×0,071 | 16 | 5×0,71 |
| 1,5 | 1+6+12 | 16×0,071 | 16 | 5×0,71 |
| 2,5 | 1+6+12 | 29×0,071 | 16 | 5×0,71 |
| 4,0 | 1+6 | 30×0,13 | 16 | 6×0,13 |
| 6,0 | 3+9 | 30×0,13 | 16 | 6×0,13 |
| 8,0 | 1+6+12 | 28×0,13 | 16 | 6×0,13 |
| 10,0 | 1+6+12 | 34×0,13 | 16 | 6×0,13 |
| 12,5 | 1+6+12 | 43×0,13 | 16 | 7×0,13 |
| 16,0 | 3+9 | 3×30×0,13 | 16 | 7×0,13 |
Strands and the core are twisted to the opposite sides. The braid fits the core tightly and not to move concerning it.
Wires have the round form.
Step to core strand twist no more than 30 settlement diameters of strand.
Step to twist of the core
- for internal poviv not Bol of 20 settlement diameters of a poviv;
- for external poviv no more than 16 settlement diameters of a wire.
Step of weaving of a braid no more than 35 mm.
TECHNICAL CHARACTERISTICS
Construction length of wires is not less than 50 m. No more than 10% of wires not less than 10 m long are allowed in party. In coordination with the consumer delivery of wires is allowed by any lengths.
Wires maintain not less than 100 excesses on a corner ± 90 ° when bending on a roller with a diameter of 20 mm for wires with a section up to 2,5 mm ² inclusive, with a diameter of 100 mm for wires with a section up to 8,0 mm ² inclusive, with a diameter of 200 mm for wires with a section over 8,0 mm ²
Wires resistant to the external influencing factors (EIF) given in the table
| Type of VVF | Characteristic of VVF | VVF value |
| 3. The increased ambient temperature | The maximum working temperature at operation, °C | to 230 |
| 4. The lowered ambient temperature | The lowered working temperature, °C | minus 60 |
| 5. Change of temperature of the environment | Change of working temperature of the environment, °C | from minus 60 to plus 230 |
| 6. The increased humidity of air | Relative humidity at a temperature of 35 °C, % | to 100 |
The minimum operating time of wires in the modes and conditions established by these specifications has to be 10000 h in normal climatic conditions or at the increased temperatures:
5000 h at a temperature up to 100 °C, or
1000 h at a temperature up to 125 °C, or
300 h at a temperature up to 150 °C, or
200 h at a temperature up to 200 °C, or
30 h at a temperature up to 230 °C, for wires with a section more than 1,5 mm ².
