In high-temperature industrial scenarios such as metallurgy, power, and petrochemicals, traditional cables are prone to problems such as insulation layer coking, brittle cracking, and sudden drop in current carrying capacity due to insufficient temperature resistance of insulation materials.ZR-FFThe series of high-temperature cables, with their fluoropolymer material system and structural design, are200℃Maintaining stable electrical performance even at continuous operating temperatures has become the core solution for power transmission in high-temperature environments.

1、 Dual breakthroughs in materials science and structural design

1. Fluoropolymer insulation sheath system

ZR-FFThe cable is made of perfluoroethylene propylene（F46）As the main insulating material, its molecular structureC-FKey energy up to485kJ/molEndow the material with temperature resistance. Experimental data shows that,F46The insulation layer is260℃Continuous work in the environment2000After hours, the dielectric strength still maintains its initial value92%Far beyond conventional cross-linked polyethylene materials. Synchronous use of sheath layerF46Fluoroplastics form a fully fluorinated enclosed structure, effectively blocking the penetration of corrosive gases such as chloride ions and hydrogen sulfide.

2. Mechanical strengthening of armored structures

For different installation scenarios,ZR-FFThe series has developed a three-level armor system:

FF22Type steel belt armorAdopting double-layer galvanized steel strip gap wrapping process, the lateral pressure resistance reaches15kN/m, suitable for direct burial laying on the ground

FF32Type steel wire armor: selectionφ1.6mmHigh strength galvanized steel wire with increased longitudinal tensile strength300%Meet dynamic stress scenarios such as vertical shafts and bridge suspensions

FFPCopper wire braided shielding: braided density≥85%Effective inhibition10MHzThe following electromagnetic interference can attenuate harmonic interference in the frequency converter drive system-40dB

3. Optimization Design of Conductors

The conductor adoptsGB/T 3956Standard No2Soft copper stranded wire, with single wire diameter controlled within0.21-0.31mmRange. Refine the copper wire grain toASTM E112standard6-8Level, in200℃The temperature rise coefficient of resistivity in the environment is only0.00393/℃Reduced compared to conventional copper conductors17%For large section cables, use'3+2'or'3+1'Segmented conductor structure reduces skin effect losses40%.

2、 Multi dimensional performance verification system

1. Extreme environmental adaptability testing

High temperature aging test: in230℃Continuous aging in an air circulation oven168Hour, insulation resistance retention rate≥95%

Low temperature brittleness test:-40℃Conducted in the environment180°Bending test shows no cracks in the sheath layer

Chemical corrosion resistance test: in5%NaCl+3%H ₂SSoak in a mixed solution720Hour, weight loss rate of sheath≤0.8%

2. Electrical performance enhancement

Pressure resistance strength: through3500V/5minAC voltage withstand test, partial discharge value≤5pC

Flame retardant properties: compliant withGB/T 18380.3standardAClass combustion test, no ignition phenomenon of combustion droplets

Current carrying capacity: in200℃At working temperature, the current carrying capacity is relatively low90℃PVC cable lifting220%

3、 Application analysis of typical industrial scenarios

1. Metallurgical industry blast furnace system

In a certain steel group3200m³In the blast furnace renovation project,ZR-FF22-3×95+1×50Replacing the original silicone rubber cable with a cable has successfully solved the following problems:

The lifespan of cables in the hot air stove area varies from18Extended to one month8year

The cable of the furnace top crane remains intact under frequent bending conditions

Reduce the frequency of blast furnace shutdowns caused by cable failures, and achieve annual production increase benefits1200ten thousand yuan

2. Petrochemical hydrogenation unit

In the hydrocracking unit of a 10 million ton refining project of Sinopec,ZR-FF-4×2.5Control cable implementation:

In a hydrogen environment（H₂concentration85%）Safe operation in the middle5Annual corrosion free

Transmission error of reactor temperature monitoring signal≤0.2%FS

Replacing imported products to reduce procurement costs40%

3. New energy photovoltaic industry

At the Talatan Photovoltaic Power Station in Qinghai,ZR-FF-3×6+1×4Cable application for string inverter connection:

adapt-35℃to+55℃Day night temperature difference environment

In a sandstorm（PM10concentration2.8mg/m³）Maintain stable insulation performance in the middle

The loss per kilometer of the transmission line is reduced compared to aluminum core cables62%

4、 Technological iteration and future trends

Currently,ZR-FFThe series is upgrading in the following direction:

Material Modification: DevelopmentF46/nanoSiO₂Composite material, elevating the temperature resistance level to260℃

Structural Innovation: Developing Flat ModelsFFGBType cable with reduced bending radius at the same current carrying capacity40%

Intelligent integration: embedded with fiber optic temperature measurement unit to achieve real-time monitoring of cable temperature and overload warning