Type 441 Flexible Semi-Conductive Screened Mining Cable
The Type 441 Flexible Semi-Conductive Screened Mining Cable is a medium-voltage rubber-insulated cable engineered for harsh mining applications. It features tinned annealed copper conductors, EPR insulation, and semi-conductive screening for optimal electrical performance. Designed with three earth/protective cores and one pilot core, it is ideal for powering draglines, shovels, and drills, as well as for trailing and reeling uses in mining and industrial environments. Its HD-CSP extra heavy-duty outer sheath delivers oil resistance, flame retardancy, and high mechanical durability, ensuring long service life in demanding operational conditions. Compliant with AS/NZS 2802 and related standards, this cable provides reliable performance under extreme stress.
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Voltage Rating
Type 441.1 - 1.1kV
Type 441.3 - 3.3kV
Type 441.6 - 6.6kV
Type 441.11 - 11kV
Type 441.22 - 22kV - Temperature Rating -25°C to +90°C
Construction
Technical Specifications
Quality Control
Application
Construction
Type 441 Flexible Semi-Conductive Screened Mining Cable Constrution
Conductor
Tinned annealed copper wires
Insulation Screen
Ethylene propylene rubber type R-EP-90 and XR-EP-90
Separator/Screen
1.1kV: Paper separator
For other nominal voltages semi-conductive tape+ thermosetting compound over conductors
For other nominal voltages semi-conductive tape+ thermosetting compound over conductors
Cable Assembly
Three screened power and three pilot cores laid up with right hand direction on cradle separator with central pilot core
Inner Sheath
Semi–conductive thermosetting compound
Outer Sheath
HD-CSP (Heavy duty Chlorosulphonated Polyethylene) extrra heavy duty, oil resistant and flame retardant
Sheath Colour
Black
Manufacturer Standard
AS/NZS 2802: 2000, AS/NZS 1125:2001, AS/NZS 2802:2003
Armour
Polyamide yarns
Application
Type 441 Flexible Semi-Conductive Screened Mining Cable is used in applications requiring three earth/protective cores and one pilot core, such as powering draglines, shovels, and drills. It is suitable for both trailing and reeling applications, as well as various other industrial uses.
Technical Specifications
Type 441 Flexible Semi-Conductive Screened Mining Cable
Type 441 Flexible Semi-Conductive Screened Mining Cable
| No. Of Cores |
NOMINAL CONDUCTOR AREA mm² |
THICKNESS OF INSULATION mm |
CORE SCREEN SIZE mm |
AREA OF SCREEN mm² |
NOMINAL THICKNESS OF SHEATH mm |
NOMINAL DIAMETER mm |
NOMINAL WEIGHT kg/km |
| 3+3 | 6 | 1.5 | 33/0.3 | 2.3 | 3.8 | 28.6 | 111 |
| 3+3 | 10 | 1.5 | 51/0.3 | 3.6 | 3.8 | 31.2 | 136 |
| 3+3 | 16 | 1.6 | 81/0.3 | 5.7 | 3.9 | 34.1 | 176 |
| 3+3 | 25 | 1.6 | 81/0.3 | 5.7 | 4.2 | 37.8 | 231 |
| 3+3 | 35 | 1.6 | 81/0.3 | 5.7 | 4.4 | 41.1 | 274 |
| 3+3 | 50 | 1.7 | 120/0.3 | 8.5 | 4.9 | 45.8 | 349 |
| 3+3 | 70 | 1.8 | 110/0.4 | 13.8 | 5.3 | 52.2 | 481 |
| 3+3 | 95 | 2 | 135/0.4 | 16.9 | 5.8 | 56.6 | 579 |
| 3+3 | 120 | 2.1 | 165/0.4 | 21.2 | 6.3 | 62.6 | 724 |
| 3+3 | 150 | 2.3 | 216/0.4 | 27.1 | 6.7 | 68.3 | 881 |
| 3+3 | 185 | 2.5 | 252/0.4 | 32.1 | 7.3 | 74.8 | 1049 |
| 3+3 | 240 | 2.8 | 214/0.5 | 42 | 8 | 83.4 | 1329 |
| 3+3 | 300 | 3 | 280/0.5 | 55 | 8.7 | 93.1 | 1629 |
| 3+3 | 16 | 2.2 | 81/0.3 | 5.7 | 4.6 | 43 | 241 |
| 3+3 | 25 | 2.2 | 81/0.3 | 5.7 | 4.9 | 46.8 | 304 |
| 3+3 | 35 | 2.2 | 81/0.3 | 5.7 | 5.2 | 50.2 | 359 |
| 3+3 | 50 | 2.4 | 120/0.3 | 8.5 | 5.7 | 55.4 | 446 |
| 3+3 | 70 | 2.4 | 110/0.4 | 13.8 | 6 | 60.3 | 571 |
| 3+3 | 95 | 2.4 | 135/0.4 | 16.9 | 6.4 | 63.5 | 659 |
| 3+3 | 120 | 2.4 | 165/0.4 | 21.2 | 6.5 | 68.5 | 794 |
| 3+3 | 150 | 2.4 | 216/0.4 | 27.1 | 6.6 | 72.6 | 931 |
| 3+3 | 185 | 2.4 | 252/0.4 | 32.1 | 6.7 | 77.4 | 1080 |
Quality Control
Type 441 Flexible Semi-Conductive Screened Mining Cable
Raw Material Test
NPC has always chosen raw material suppliers who have a good reputation, possess stable supply capabilities and have passed international quality system certifications (such as ISO 9001). And establish a long-term cooperative relationship with it, forming a stable and reliable raw material supply chain.
We will ensure that all raw materials are subject to strict inspection procedures upon entry to the factory, and can only be stored in the warehouse after they have been confirmed to meet the standards.
Process inspection
NPC has strict quality control procedures for each process in the cable production process.
Process documents: Develop detailed process flow and operation instructions to clarify the operating specifications and quality standards of each process.
Equipment calibration: Regularly calibrate key equipment such as wire drawing machines, stranding machines, extruders, and diameter gauges to ensure that the accuracy meets the requirements.
First piece confirmation: Before each batch of production, the first piece is trial-produced to confirm that the process parameters, product dimensions, electrical performance, etc. meet the standards before mass production can be carried out.
Finished Product
Inspectors conduct ex-factory inspections on cables according to relevant standards and corresponding product inspection specifications to ensure that each ex-factory product complies with the process regulations.
Application
Type 441 Flexible Semi-Conductive Screened Mining Cable is used in applications requiring three earth/protective cores and one pilot core, such as powering draglines, shovels, and drills. It is suitable for both trailing and reeling applications, as well as various other industrial uses.
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 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.
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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.
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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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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.
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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.
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