Другие характеристики:
APPLICATION
Combined cables for video observation systems are designed for voice, TV signal transmission at supervisory systems with simultaneous current supply at DC nominal voltage up to 48V.
Trade mark Name of cable
ККВВ-3 cable with one radiofrequency element with single-wire inner conductor and outer insulation diameter 3mm, with two supply conductors with PVC insulation, in common PVC sheath , with separating baffle between radiofrequency element and supply and control conductors
ККВВГ-3 the same as ККВВ-3, but with multi-wire central conductor
ККВП-3 the same as ККВВ-3, but in PE sheath
ККВПГ-3 the same as ККВП-3, but with multi-wire central conductor
ККВВ-4 the same as ККВВ-3, but with radiofrequency element with outer insulation diameter 4mm
ККВВГ-4 the same as ККВВ-4, but with multi-wire central conductor
ККВП-4 the same as ККВВ-4, but in PE sheath
ККВПГ-4 the same as ККВП-4, but with multi-wire central conductor
ККВЭВ-3 the same as ККВВ-3, but with shielded control conductor
ККВЭВГ-3 the same as ККВЭВ-3, but with multi-wire central conductor
ККВЭП-3 the same as ККВЭВ-3, but in PE sheath
ККВЭПГ-3 the same as ККВЭП-3, but with multi-wire central conductor
ККВЭВ-4 the same as ККВЭВ-3, but with radiofrequency element with outer insulation diameter 4mm
ККВЭВГ-4 the same as ККВЭВ-4, but with multi-wire central conductor
ККВЭП-4 the same as ККВЭВ-4, but in PE sheath
ККВЭПГ-4 the same as ККВЭП-4, but with multi-wire central conductor
TECHNICAL DATA
Electric resistance of insulation of supply and control conductors for 1 km at the temperature 20°C is not less 50 МOhm.
Characteristic impedance of radiofrequency element is 75 Ohm.
Attenuation constant of radiofrequency element at frequency 200 MHz is not more 0,24 db/m for ККВВ-3, ККПВ-3; 0,12 db/m for ККВВ-4, ККПВ-4.
Operational temperature is from -40°C up to +60°C.
Cables resist to air humidity up to 98 % at an ambient temperature up to +35ºС.
Cables resist to 10 bendings on 90° with the radius equal to 10 times the maximum outer cable dimension of its smallest side
Cables with PVC sheath are recommended for permanent installation in dry and damp rooms, with polyethylene sheath - for permanent installation on external walls.
The minimum bending radius at installation at temperature not below-10 ºС is not less ten times the smallest side of cable, number of bendings is not more than ten.
The delivery length is not less than 50 meters, 20m and more cable pieces are possible to deliver but not more than 10% of total length of batch.
Service life of cables with PVC sheath is not less than 12 years, with PE sheath is not less than 15 years.
