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Instrumentation Cables—Mica Tapped, XLPE Insulated, Overall Screened, Wire Armoured LSZH Sheathed Fire-Resistant Cables(CU/GMT/XLPE/OSCR/SWA/LSZH) image1

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)

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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
Conductor Size	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
Conductor Size	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)
Conductor Size	XLPE	PVC	XLPE or HR - PVC	PVC	Inductance to Resistance Ratio (L/R)
[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
Number of Pair	0.5mm²	0.75mm²	1.0mm²	1.5mm²	2.5mm²	0.5mm²	0.75mm²	1.0mm²	1.5mm²	2.5mm²	Drum Length
[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
Number of Triad	0.5mm²	0.75mm²	1.0mm²	1.5mm²	2.5mm²	0.5mm²	0.75mm²	1.0mm²	1.5mm²	2.5mm²	Drum Length
[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
Number of Quad	0.5mm²	0.75mm²	1.0mm²	1.5mm²	2.5mm²	0.5mm²	0.75mm²	1.0mm²	1.5mm²	2.5mm²	Drum Length
[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.

Renewable Energy

Power & Energy Industry

Transport Sector

Real Estate & Construction

Infrastructure & Municipal Industry

Data Centers

Mining and Oil & Gas Industry

Industrial Manufacturer

Technical Advantages

● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions

Conductor Stranded Work Shop

CCV Production Line

CCV production 01

Partical Voltage Test Labtoary

Auto-Winding Machine

Oil Chromatography Test Machine

Auto-core cutting machine

Basic Insulation Level Test Labtoary

Auto Laser Cutting Machine

Automatic Desanding Machine

Automatic Dryer Machine

Product Packaging

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FAQ From Customers

What are the advantages of power cables and overhead lines?

(1) Reliable operation, because it is installed in a hidden place such as underground, it is less damaged by external forces, has less chance of failure, and the power supply is safe, and it will not cause harm to people;
(2) The maintenance workload is small and frequent inspections are not required;
(3) No need to erect towers;
(4) Help improve power factor.

Which aspects should be considered when choosing the cross section of a power cable?

(1) The long-term allowable working current of the cable;
(2) Thermal stability once short circuited;
(3) The voltage drop on the line cannot exceed the allowable working range.

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.

What should be paid attention to during the transportation and handling of cables?

(1) During transportation, loading and unloading, cables and cable reels should not be damaged. It is strictly forbidden to push the cable reels directly from the vehicle. Generally, cables should not be transported and stored flat.
(2) Before transporting or rolling the cable reel, ensure that the cable reel is firm, the cable is wound tightly, the oil pipe between the oil-filled cable and the pressure oil tank should be fixed without damage, the pressure oil tank should be firm, and the pressure indication should meet the requirements.

What inspections should be carried out for the acceptance of cable lines?

(1) The cable specifications should meet the regulations, the arrangement should be neat, no damage, and the signs should be complete, correct and clear;
(2) The fixed bending radius of the cable, the related distance and the wiring of the metal sheath of the single-core power cable should meet the requirements;
(3) The cable terminal and the middle head should not leak oil, and the installation should be firm. The oil pressure of the oil-filled cable and the meter setting should meet the requirements;
(4) Good grounding;
(5) The color of the cable terminal is correct, and the metal parts such as the bracket are completely painted;
(6) There should be no debris in the cable trench, tunnel, and bridge, and the cover should be complete.

How many projects can cable engineering be divided into?

(1) Construction site transportation: including the loading and unloading, transportation and empty vehicle return journey of engineering materials from the warehouse to the construction site.
(2) Local engineering: including road excavation, tunnel, trench construction, etc.
(3) Laying engineering: including laying, intermediate head production, lift cover plate, buried pipe, school tide, tractor head production, etc.
(4) Two-end engineering: including the production and installation of support, suspension bridge and its foundation, the production of terminal heads, the installation of oil pressure and signal devices, and the electrical performance testing of various types.
(5) Stopping works: including the production of oil-filled cable stop heads, the installation of fuel supply tanks, automatic drainage and signal devices, etc.
(6) Grounding engineering: including installation of insulation joints, transposition boxes, protectors, and grounding boxes.

What tests and inspections should be carried out on power cables before laying?

Before laying, check whether the type, specification and length of the cable meet the requirements and whether there is external force damage. Low-voltage cables use a 1000V megohmmeter to remotely measure the insulation resistance, and the resistance is generally not less than 10MΩ. High-voltage cables use a 2500V megger to measure the resistance. Generally not less than 400MΩ.

What are the factors that determine the long-term allowable current carrying capacity of the cable?

(1) The long-term allowable working temperature of the cable;
(2) The heat dissipation performance of the cable itself;
(3) The condition of the cable installation and the heat dissipation conditions of the surrounding environment.

According to the difference of insulation and protective layer, what are the main types of commonly used low-voltage power cables?

(1) Oil-impregnated paper insulated lead-clad (or aluminum-clad) power cable;
(2) Non-drip oil-impregnated paper insulated power cable;
(3) PVC insulated and sheathed power cable;
(4) Cross-linked PVC insulated and PE sheathed power cable;
(5) Cross-linked PVC insulated and sheathed power cable;
(6) Rubber insulated power cables.

What are the requirements for the fire blocking of cable holes?

For larger cable penetration holes, such as the cable penetration floor, etc., when using fireproof blocking materials to block, according to the actual situation, first coat four to six layers of fireproof paint on the cable surface, the length is about 1.5m below the hole, and then use fire-resistant The material is processed into a board-supporting fire-proof blocking material with a certain strength to ensure that it is firm after being blocked and is easy to disassemble and assemble when the cable is replaced. The plugging is dense and non-porous to effectively block smoke and fire.

What are the main properties of the insulation material of the power cable?

(1) High breakdown strength;
(2) Low dielectric loss;
(3) Very high insulation resistance;
(4) Excellent discharge resistance;
(5) It has certain flexibility and mechanical strength;
(6) Long-term insulation performance is stable.

What are the regulations for cable protection tubes?

(1) When the cable needs to be laid through a protective pipe, the inner diameter of the pipe should not be less than 1.5 times the outer diameter of the cable, and the inner diameter of the concrete pipe, clay pipe, asbestos, and cement pipe should not be less than 100mm;
(2) The bending radius of the cable tube should meet the requirements of the bending radius of the cable inserted;
(3) Each pipe should not exceed three elbows at most, and there should be no more than two right-angle bends.

How to measure the outer diameter of the cable sheath?

At five evenly distributed points on the circumference of the sheath, measure the outer diameter of the sheath and its average value. The average outer diameter is the outer diameter of the sheath.

How to connect copper core cables with different cross-sections?

Copper core cables with different cross-sections can be connected by open-back weak copper pipes and connected by soldering, or pure copper rods can be connected into copper pipes according to different cross-sectional requirements and connected by crimping.

What are the insulating materials used to make cable terminal heads or intermediate joints?

There are insulating glue, insulating tape, insulating tube, insulating gloves, insulating resin, etc.

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Instrumentation Cables—Mica Tapped, XLPE Insulated, Overall Screened, Wire Armoured LSZH Sheathed Fire-Resistant Cables(CU/GMT/XLPE/OSCR/SWA/LSZH)

Construction

Conductor

Insulation

Individual and Overall Screen

Armour

Inner and Outer Sheath

Technical Specifications

Quality Control

Raw Material Test

Process inspection

Finished Product

Application

Technical Advantages

Conductor Stranded Work Shop

CCV Production Line

CCV production 01

Partical Voltage Test Labtoary

Auto-Winding Machine

Oil Chromatography Test Machine

Auto-core cutting machine

Basic Insulation Level Test Labtoary

Auto Laser Cutting Machine

Automatic Desanding Machine

Automatic Dryer Machine

Product Packaging

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FAQ From Customers

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