Cable with film-porous-film polyethylene insulation of cores, in a sheath and protective hose of polyethylene, armoured with steel galvanized tapes. The cables are designed for cable trunk lines, zone communication lines and connecting lines used in the frequency range up to 552 kHz or in the application of secondary digital transmission systems in the frequency range up to 8448 kHz and operating at AC remote power supply voltage up to 690V or DC voltage up to 1000V. Preferred application area: for laying in soils in the absence of significant stretching or squeezing forces.
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