Instrumentation Cables—Mica Tapped, XLPE Insulated, Overall Screened, Wire Armoured LSZH Sheathed Fire-Resistant Cables(CU/GMT/XLPE/OSCR/SWA/LSZH)
Instrumentation Cables with Mica Taped, XLPE Insulated, Overall Screened, Wire Armoured and LSZH Sheathed construction (CU/GMT/XLPE/OSCR/SWA/LSZH) are designed for critical signal transmission in fire-risk and safety-sensitive environments. The copper conductor is wrapped with mica tape to maintain circuit integrity under fire conditions, while XLPE insulation ensures stable electrical performance and thermal resistance.
The overall screen reduces electromagnetic interference, enabling accurate signal transmission in industrial systems. Steel wire armouring provides mechanical protection against impact and external stress, making the cable suitable for harsh installation conditions. The LSZH outer sheath limits smoke emission and toxic gases during fire, enhancing personnel safety. These fire-resistant instrumentation cables are widely used where continuous operation and reliable signal control are essential, even in extreme conditions.
- Standard BS EN 50288-7, IEC 60502-1 (General)
Construction
Technical Specifications
Quality Control
Application
Construction
Mica Tapped, XLPE Insulated, Overall Screened, Wire Armoured LSZH Sheathed Fire-Resistant Cables
Conductor
Instrumentation cable shall have an annealed plain copper conductor or a tinned copper conductor. Depending upon cable application, conductor can be solid (Class-1), Stranded (Class-2), or flexible (Class-5) type as defined in BS EN / IEC 60228
Insulation
Instrumentation cable shall have PVC, XLPE, or HR-PVC insulation. Insulation material shall be selected based on the maximum operating temperature. PVC insulation is suitable for a continuous operating temperature of 70°C, whereas XLPE or HR-PVC is suitable for a continuous operating temperature of 90°C. Fire-rated / fire resistance instrumentation cables shall have Glass Mica Tape layer below insulation & shall have XLPE insulation.
Individual and Overall Screen
The screen is made of aluminum, mylar tape, + ATC drain wire. Aluminum mylar tape is made of aluminum with a thin layer of polyester. It helps in minimizing the crosstalk and prevents shorting.
Armour
Steel wire armour is applied to cables to shield against mechanical stresses and ensure that the core of the cable remains protected.
Inner and Outer Sheath
The sheath can be made of PVC, Polyethylene, or LSZH
Technical Specifications
Instrumentation Cables—Mica Tapped, XLPE Insulated, Overall Screened, Wire Armoured LSZH Sheathed Fire-Resistant Cables(CU/GMT/XLPE/OSCR/SWA/LSZH)
Instrumentation Cables Main Specifications
Instrumentation Cables—Mica Tapped, XLPE Insulated, Overall Screened, Wire Armoured LSZH Sheathed Fire-Resistant Cables(CU/GMT/XLPE/OSCR/SWA/LSZH)
| Conductor Size | Max. Conductor DC Resistance at 20°C for Plain Copper |
Max. Conductor DC Resistance at 20°C for Tinned Copper |
||
| Solid, Class - 1 & Stranded, Class - 2 |
Flexible, Class-5 | Solid, Class - 1 & Stranded, Class - 2 |
Flexible, Class-5 | |
| [mm2] | [Ω/km] | [Ω/km] | [Ω/km] | [Ω/km] |
| 0.50 | 36.72 | 39.78 | 37.434 | 40.902 |
| 0.75 | 24.99 | 26.52 | 25.296 | 27.234 |
| 1.00 | 18.462 | 19.89 | 18.564 | 20.4 |
| 1.50 | 12.342 | 13.566 | 12.444 | 13.974 |
| 2.50 | 7.5582 | 8.1396 | 7.7112 | 8.3742 |
| Conductor Size | Insulation Thickness | |||
| 90V | 300V | 500V | 1000V | |
| [mm2] | [mm] | [mm] | [mm] | [mm] |
| 0.50 | 0.20 | 0.26 | 0.44 | 0.70 |
| 0.75 | 0.20 | 0.26 | 0.44 | 0.70 |
| 1.00 | 0.26 | 0.26 | 0.44 | 0.70 |
| 1.50 | 0.30 | 0.35 | 0.44 | 0.70 |
| 2.50 | - | - | 0.53 | 0.70 |
| Conductor Size | Mutual Capacitance | Max. Continuous Operating Temperature | Inductance to Resistance Ratio (L/R) |
||
| XLPE | PVC | XLPE or HR - PVC | PVC | ||
| [mm2] | [nF/km] | [nF/km] | [°C] | [°C] | [μH/Ω] |
| 0.50 | 150 | 250 | 90 | 70 | < 25 |
| 0.75 | 150 | 250 | 90 | 70 | < 25 |
| 1.00 | 150 | 250 | 90 | 70 | < 25 |
| 1.50 | 150 | 250 | 90 | 70 | < 40 |
| 2.50 | 150 | 250 | 90 | 70 | < 60 |
| Number of Pair | Cable OD | Cable Weight | Drum Length | ||||||||
| 0.5mm² | 0.75mm² | 1.0mm² | 1.5mm² | 2.5mm² | 0.5mm² | 0.75mm² | 1.0mm² | 1.5mm² | 2.5mm² | ||
| [Nos] | [mm] | [mm] | [mm] | [mm] | [mm] | [kg/km] | [kg/km] | [kg/km] | [kg/km] | [kg/km] | [m] |
| 1 | 12.5 | 13.0 | 13.0 | 14.0 | 15.0 | 255 | 270 | 290 | 345 | 375 | 1000 |
| 2 | 16.5 | 17.5 | 18.0 | 19.0 | 21.5 | 395 | 435 | 465 | 510 | 625 | 1000 |
| 5 | 20.5 | 21.5 | 22.5 | 24.0 | 27.5 | 570 | 650 | 705 | 790 | 1130 | 1000 |
| 10 | 27.5 | 30.0 | 31.0 | 33.5 | 38.0 | 920 | 1180 | 1280 | 1475 | 1890 | 1000 |
| 20 | 35.5 | 37.5 | 39.5 | 1580 | 1795 | 1980 | 500 | ||||
| Number of Triad | Cable OD | Cable Weight | Drum Length | ||||||||
| 0.5mm² | 0.75mm² | 1.0mm² | 1.5mm² | 2.5mm² | 0.5mm² | 0.75mm² | 1.0mm² | 1.5mm² | 2.5mm² | ||
| [Nos] | [mm] | [mm] | [mm] | [mm] | [mm] | [kg/km] | [kg/km] | [kg/km] | [kg/km] | [kg/km] | [m] |
| 1 | 13.0 | 13.5 | 14.0 | 14.5 | 16.0 | 285 | 305 | 320 | 360 | 435 | 1000 |
| 2 | 18.5 | 19.0 | 19.5 | 21.0 | 23.5 | 465 | 505 | 540 | 625 | 750 | 1000 |
| 5 | 22.5 | 24.0 | 24.5 | 26.5 | 30.5 | 710 | 785 | 860 | 1000 | 1430 | 1000 |
| 10 | 31.5 | 33.5 | 34.5 | 37.0 | 1290 | 1465 | 1610 | 1865 | 500 | ||
| Number of Quad | Cable OD | Cable Weight | Drum Length | ||||||||
| 0.5mm² | 0.75mm² | 1.0mm² | 1.5mm² | 2.5mm² | 0.5mm² | 0.75mm² | 1.0mm² | 1.5mm² | 2.5mm² | ||
| [Nos] | [mm] | [mm] | [mm] | [mm] | [mm] | [kg/km] | [kg/km] | [kg/km] | [kg/km] | [kg/km] | [m] |
| 1 | 13.5 | 14.0 | 14.5 | 15.5 | 17.0 | 315 | 340 | 365 | 410 | 500 | 1000 |
| 2 | 21.5 | 23.0 | 24.0 | 25.5 | 29.5 | 580 | 655 | 705 | 795 | 1130 | 1000 |
| 5 | 27.5 | 30.0 | 31.0 | 33.5 | 37.5 | 915 | 1165 | 1270 | 1470 | 1880 | 1000 |
| 10 | 39.0 | 1690 | 500 | ||||||||
Note: Cable OD and Cable weight are subject to change based on the latest manufacturing practice.
Quality Control
Instrumentation Cables—Mica Tapped, XLPE Insulated, Overall Screened, Wire Armoured LSZH Sheathed Fire-Resistant Cables(CU/GMT/XLPE/OSCR/SWA/LSZH)
Raw Material Test
Raw Material Test ensures the quality of all materials used in CU/GMT/XLPE/OSCR/SWA/LSZH instrumentation cables. Copper conductors are evaluated for conductivity, mechanical strength, and surface quality. Mica tape is tested for fire endurance and bonding performance. XLPE insulation materials undergo thermal aging and mechanical testing. Screening components and steel wire armour are inspected for strength and consistency. LSZH sheath materials are tested for flame retardancy, smoke emission, and halogen-free characteristics. Only materials that meet technical specifications are approved for production.
Process inspection
Process Inspection controls quality during the production of fire-resistant instrumentation cables CU/GMT/XLPE/OSCR/SWA/LSZH. Conductor preparation, mica taping, and insulation extrusion are carefully monitored. Overall screening is inspected for complete coverage and electrical continuity. Steel wire armouring and LSZH sheathing are controlled for structural integrity and dimensional accuracy. Continuous inspections and in-process testing ensure stable quality throughout manufacturing.
Finished Product
Finished Product Testing confirms the safety and performance of CU/GMT/XLPE/OSCR/SWA/LSZH instrumentation cables. Electrical tests verify resistance and insulation properties. Fire resistance tests validate circuit integrity under flame conditions. Mechanical tests check armour durability and flexibility. Smoke density and toxicity tests ensure LSZH compliance. Visual inspection confirms workmanship and marking accuracy before shipment.
Application
Fire-resistant instrumentation cables are widely used in refineries, offshore platforms, power generation plants, metro systems, tunnels, and industrial control installations where fire safety and signal reliability are essential.
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
Product Packaging
Wires and Cables packaging (1)
Wires and Cables packaging (2)
Wires and Cables packaging (3)
Wires and Cables packaging (4)
Wires and Cables packaging (5)
Wires and Cables packaging (6)
Wires and Cables packaging (7)
Wires and Cables packaging (8)
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What are the measures for cable fire prevention?(1) Use flame-retardant cables; (2) Use fireproof cable tray; (3) Use fireproof paint; (4) Fire partition walls and fire baffles are installed at cable tunnels, mezzanine exits, etc.; (5) Overhead cables should avoid oil pipelines and explosion-proof doors, otherwise local pipes or heat insulation and fire prevention measures should be taken.
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