Pair cables for telephone and radio transmission
PRPPM, PRPVM under quality requirements 16.705.450-87
PRPPM, PRPVM under Belarus quality requirements 500017371.048-2009
Cables are designed for voltage up to 380V frequency up to 10 kHz at subscriber telephone and radio lines.
|PRPPM||Pair cables for telephone and radio transmission with PE insulation and sheath||Direct burial, duct-work, external wall, overhead line supports|
|PRPVM||Pair cables for telephone and radio transmission with PE insulation and PVC sheath||Direct burial, duct-work, external wall|
|Trade mark||Number of conductors||Nominal conductor diameter, mm||Min. thickness of insulation, mm||Nominal total thickness of insulation & sheath, mm||Маx. outer dimensions (thickness-width), mm||Weight, kg/km|
|* For wires under Belarus quality requirements 500017371.048-2009|
CONDUCTOR — soft copper wire.
INSULATION — polyethylene.
SHEATH — light stabilized polyethylene for PRPPM and PVC for PRPVM.
Electric resistance of insulation between the wires per 1 km of cable at 20˚С is not less than 10000 МОhм.
Operational temperature for PRPPM is from -60˚С up to +50˚С; for PRPVM is - from-40˚С up to +60˚С.
Cables resist to air humidity up to 98 % at the temperature up to +35˚С.
Permissible temperature for installation of cables should not be below -10˚С. Bending radius should not be less than 10 cable thicknesses.
The delivery length should not be less than 500 meters, 250m and more cable pieces are possible to deliver but not more than 15% of total length of batch.
Average service life of cables is 10 year.