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Product catalog

Single-phase coaxial heatingcables

КНК-101, КНК-102, КНК-103

DESIGNATION

Cables are designed for application in electric heating device, systems and devices for heating of frozen soils and rocks, concrete, melting the snow on roofs and other constructions and road-bridge structures, heating of floors, greenhouse soils, industrial pipelines, sidewalks, open stairways and ramps, etc. when used in the temperature range from -35°C to +90°C

Cable models and their definitions shall correspond to the details given in the table below:

Model

Definition

КНК-101

single-phase coaxial heating cable with steel single-wire inner conductor of 1.2 mm diameter, with silane cross-linked polyethylene (PE), with outer conductor of steel wire braiding, with heat-resistant polyvinylchloride (PVC) compound sheath

КНК-102

the same, with inner conductor diameter of 1.4 mm;

КНК-103

single-phase coaxial heating cable with steel single-wire inner conductor of 1.2 mm diameter, with first insulation of silane cross-linked PE, with outer conductor of steel wire braiding, with second insulation of silane cross-linked PE, with shielding braid of steel wire, with heat-resistant polyvinylchloride (PVC) compound sheath

 

ARRANGEMENT

INNERCONDUCTOR:manufactured of steel low carbongalvanized wire of 1.2 mm rated diameter for КНК-101, КНК-103 models; 1.4 mm - for КНК-102 model.

INSULATION: silane cross-linked polyethylene.

OUTERCONDUCTOR:steel wire braiding of 0.15 mm diameter. Braiding coverage is not less than 85%.

SECOND   INSULATINGLAYER: for КНК-103 model the second insulation layer of silane cross-linked PE is laid.

SHIELDING:for КНК-103 model - steel wire braiding of 0.15 mm diameter. Braiding coverage is not less than 50%.

SHEATH:over outer conductor of КНК-101 and КНК-102 models and over shielding braid of КНК-103 model, heat-resistant polyvinylchloride (PVC) compound sheath of 1.0 mm thickness is laid.

TECHNICALSPECIFICATIONS

Electrical cable insulation resistance for a length of 1 km at a temperature of +20°С - not less than 10 MΩ, at a temperature of +80°С - not less than 0.5 MΩ.

Cable is resistant to the effects of water,fertilizer liquids, 20% sodium chloride-water solution and 30% Ca(OH)2 or NaOHalkaline solutions.

Total operating period under current load is not longer than 20000 hours at outer sheath temperature +80°С.

Cabling is performed at ambient temperature not lower than -10°С; operating bend while cabling - not less than 5 rated outer cable diameters.

Mounted cable spacing shall be not less than 50 mm.

Power supply of the cable shall exclude ingress of moisture. Cable is operated hardwired.

Factory length of cables - not less than 130 m.

Cable operational life - not less than 20 years.

Regulations: Technical Specificationsof The Republic of Belarus 500017371.020-2002