Characteristics of the ZKPm 1X4X1.2 cable
Characteristic - insulated, multi-core.
Cable cross-section - 1.2
Other characteristics
Diameter, mm - 15.7
Decoding of the ZKPm 1X4X1.2 cable
Z - Zonal
K - Cable
P - Sheath made of light-stabilized polyethylene
M - With polyethylene terephthalate tapes in the core
Structural elements of the ZKPm 1X4X1.2 cable:
Conductor - soft copper wire
Insulation - insulating high-pressure PE (HDPE)
Filler cord - made of polyethylene; A star-shaped quartet of four insulated cores is twisted around the filler cord.
Filler - a composition of polyethylene with butyl rubber, applied over the star-shaped quartet.
Screen - spirally applied tapes of aluminum (ZKPalum) or annealed copper (ZKPmed. ) foil with tinned copper wire passed underneath.
Sublayer - bitumen.
Sheath - hose made of light-stabilized LDPE.

Scope of application of the ZKPM 1X4X1.2 cable:
For zone communication cable lines of K-60 transmission systems used in the frequency range up to 250 kHz at an alternating voltage of remote power supply up to 690 V / 50 Hz.
- welded or pressed aluminum sheath.
Sheath - hose made of light-stabilized LDPE.
Protective covers - hose made of light-stabilized LDPE, armor made of two steel tapes with an outer cover made of yarn or hose made of LDPE, armor made of galvanized steel wire and hose made of light-stabilized LDPE over the armor.

Operating and installation conditions for cable ZKPm 1X4X1.2:
Operating temperature - from -40 to +50 °C;
Minimum service life under normal operating conditions - 20 years;
Laying - in cable ducts, pipes, blocks, on bridges and in soils in the absence of mechanical impacts and the risk of damage by rodents (ZKP(m), ZKAShp(m)), directly in soils of all categories with the risk of damage by rodents and the absence of permafrost deformations and chemical aggressiveness to steel armor (ZKPB(m), ZKABP(m)), as well as through mountain, shipping and rafting rivers, swampy areas and in soils with permafrost deformations (ZKAKpShp(m)). Mechanized laying is allowed.
Laying temperature - not lower than -10 °C;
The value of installation bends is not less than 20 diameters along the sheath

Electrical characteristics of the ZKPm 1X4X1.2 cable:
Electrical resistance of conductive cores per 1 km of length at a temperature of 20 °C, Ohm, not more than: 15.95;
Ohmic asymmetry of cores in a working pair, Ohm/km, not more than: 0.21;
Insulation resistance per 1 km of length at a temperature of 20 °C, MOhm: Not less than - 30000;
Working capacitance, NF per 1 km of length: 36.9±8;
Crosstalk attenuation at the near end, dB, not less than: 58.1;
Immunity at the far end, dB, not less than: 66.7.