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VP / ВП - wires for industrial explosive works

Technical characteristics of wires for industrial explosive works (VP/ВП)

  • wires for industrial explosive works by State Standard (GOST) 6285-74;
  • ultimate working wire temperature from -60°C to +50°C;
  • resistivity of electrical core to direct current at 1 kilometer core length and +20°C is: 0,5 mm diameter – no more than 93 Ohm; 0,7 mm – no more than 50 Ohm, 0,8 mm – no more than 36 Ohm;
  • testing voltage of VP wire to pass with 50 Hz frequency is : 3000V for 0,5 mm diameter core;
  • 5000V for 0,7 and 0,8 mm diameters cores;
  • rated voltage of VP wire is : short-time U=380V; momentary U=660V и Uconst 1.5 kW;
  • crushing mechanical strength of VP wire insulation is not less than 30 kg.

Structure

  • conducting copper cores made according to Company Standard TU 3518 PK 4043838373-ТОО-17-2003;
  • VP wire core insulation made of polyethylene according to Company Standard TU 6-11-00203335-97-95;
  • insulated cores of duplex wire are twisted;
  • different colors of insulated cores in wire.

Application

VP wires (for igniting wire outlet and lead backbone lines to them) are made for explosive works in open pits and mines, as well as for short-time use with 380V voltage and momentary use with alternating voltage up to 660V or direct voltage up to 1,5kW.

Order arrange table

Wire grade

Core diameter, mm

Number of cores

Outside wire diameter, not more than, mm

Nominal weight of 1 km wire, kg

Factory length, not less than, meter

VP 2х0,5

0,5

2

2,8

5,7

1500

VP 2х0,7

0,7

2

4,4

11,8

500

VP 2х0,8

0,8

2

4,8

14,0

500

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