Type OnG-1 Multi-core Unscreened Mining Cable
2, 4 and 5-core Rubber-insulated and rubber-sheathed power cables for mobile and portable mining receivers, multi-core unscreened for a rated voltage of 0.6/1kV
The OnG-1 cable is a multi-core, unscreened power cable designed specifically for mobile and portable mining receivers.
It is rated for a voltage of 0.6/1 kV and is built to meet strict Polish standards (PN-89/E-90143 and PN-89/E-90140).
Its robust construction makes it suitable for the demanding conditions encountered in mining environments.
Construction & Materials
1. Conductors:
Material: Made from multi-stranded, galvanized copper (class 5c) in accordance with PN-88/E-90160.
Configurations:
2-core cables: Consist of two working conductors.
4-core cables: Include three working conductors and one protective conductor.
5-core cables: Consist of three working conductors, one protective conductor, and one auxiliary conductor.
2. Insulation:
Type: Rubber insulation (designated IZ) per PN-89/E-29100.
Color Coding:
2-core: Working conductors are red and natural.
4-core: Working conductors are green, red, and natural; the protective conductor is a corrugated black.
5-core: Working conductors are green, red, and natural; the protective conductor is corrugated black; and the auxiliary conductor is brown.
3. Core/Inserts:
Made of the same rubber (IZ) material, ensuring that when conductors are twisted together, the external diameters of the protective and auxiliary conductors match that of the working conductors.
4. Outer Sheath (Opona):
Material: Rubber of type ON4, which has enhanced mechanical properties.
Properties: Flame retardant and oil resistant.
Color: Black.
Cable Marking & Nomenclature
The designation OnG-1 breaks down as follows:
O: Indicates the cable is rubber-sheathed.
G: Refers to its application in mining.
1: Specifies the construction – with copper conductors, standard rubber insulation, and an enhanced, flame-retardant, oil-resistant rubber sheath. The conductors are twisted either with inserts or around a core.
Example: An OnG-1 4-core cable might be marked as “OnG-1 4-żyłowy” with a nominal conductor cross-sectional area of 1.5 mm² for both the working and the protective conductors.
Key Technical Characteristics
Operating Temperature:
Maximum working temperature: +60°C
Minimum Bending Radius:
For fixed installations: 6 times the cable’s overall diameter (6D)
For mobile applications: 10 times the cable’s overall diameter (10D)
Test Voltage:
Working conductors are tested at 3.2 kV
Packaging:
The cables are typically supplied on reels.
Conductor Arrangement
2-Core Cables:
Consist of two working conductors with two rubber inserts twisted alternately.4-Core Cables:
Have three working conductors and one protective conductor twisted around a rubber core.5-Core Cables:
Include three working conductors, one protective conductor, and one auxiliary conductor twisted around a rubber core.
Cable Variants & Physical Specifications
Depending on the number of cores and the nominal cross-sectional area, the cable dimensions and weights vary:
2-Core Variants:
1.5 mm² conductors: Overall diameter ≈ 2.5 mm; weight ≈ 14.1 kg/km.
2.5 mm² conductors: Overall diameter remains ≈ 2.5 mm; weight ≈ 15.0 kg/km.
4-Core Variant:
1.5 mm² (working and protective): Overall diameter ≈ 2.5 mm; weight ≈ 15.0 kg/km.
5-Core Variants:
2.5 mm² for all conductors: Overall diameter ≈ 3.2 mm; weight ≈ 19.9 kg/km.
Larger cross-sections (e.g., 4 mm² or 6 mm²) result in increased overall diameters (3.2–3.6 mm) and higher weights (22.3–26.4 kg/km).
Electrical Parameters
For the working conductors, key electrical parameters include:
1.5 mm²:
Maximum resistance: 13.7 Ω/km
Continuous current capacity: 23 A
2.5 mm²:
Maximum resistance: 8.21 Ω/km
Continuous current capacity: 31 A
Unit inductance: 0.39 mH/km
Unit reactance: 0.123 Ω/km
4 mm²:
Maximum resistance: 5.09 Ω/km
Continuous current capacity: 42 A
Unit inductance: 0.37 mH/km
Unit reactance: 0.016 Ω/km
6 mm²:
Maximum resistance: 3.39 Ω/km (note: this does not apply to the auxiliary conductor, which has a maximum of 5.09 Ω/km)
Continuous current capacity: 54 A
Unit inductance: 0.34 mH/km
Unit reactance: 0.107 Ω/km
Applications
This cable is designed for use in mobile and portable mining systems, where reliable power delivery and high durability are essential. Its robust construction and compliance with stringent standards ensure safe and efficient operation in harsh mining environments.
Frequently Asked Questions (FAQ)
Q: What is the primary application of the OnG-1 cable?
A: The OnG-1 cable is designed for mobile and portable mining receivers, ensuring robust and reliable power delivery in harsh mining environments.Q: What voltage rating does the OnG-1 cable support?
A: It is rated for 0.6/1 kV, making it suitable for various mining power systems that operate within these voltage limits.Q: What core configurations are available for this cable?
A: The cable is available in 2-core, 4-core, and 5-core versions:2-core: Two working conductors.
4-core: Three working conductors plus one protective conductor.
5-core: Three working conductors, one protective conductor, and one auxiliary conductor.
Q: What materials are used in the construction of the OnG-1 cable?
A: The cable features multi-stranded, galvanized copper conductors, rubber insulation (IZ), and a high-performance rubber outer sheath (ON4) that is flame retardant and oil resistant.Q: What standards does the cable comply with?
A: It meets Polish standards PN-89/E-90143 and PN-89/E-90140, ensuring its suitability and safety for mining operations.Q: How does the cable handle extreme temperatures?
A: The OnG-1 cable is rated for a maximum operating temperature of +60°C, which is ideal for the elevated temperatures sometimes encountered in mining settings.Q: What are the recommended bending radius requirements?
A:For fixed installations, the minimum bending radius is 6 times the cable’s overall diameter (6D).
For mobile applications, it is 10 times the cable’s overall diameter (10D), ensuring durability under frequent movement.
Q: How is the cable designed to resist mechanical stress?
A: Its outer sheath is made from a robust rubber (ON4) with enhanced mechanical properties, providing resistance to abrasion, oil, and flame spread—critical features for demanding mining environments.Q: Can the cable be used for both stationary and mobile mining equipment?
A: Yes, the OnG-1 cable is versatile enough for both fixed installations and mobile/portable mining receivers, offering flexibility in various operational scenarios.Q: What electrical parameters can be expected from the cable’s conductors?
A: Depending on the conductor cross-sectional area (ranging from 1.5 to 6 mm²), the cable provides specified values for maximum resistance, continuous current carrying capacity, and inductance—ensuring efficient and reliable power transmission.Q: How is the cable typically supplied for mining applications?
A: The cable is usually delivered on reels, which facilitates easy deployment and handling in mining operations where mobility and quick installation are important.
Type OnG-1 Multi-core Unscreened Mining Cable
The OnG-1 cable is a robust power cable designed specifically for mobile and portable mining equipment. It is rated for 0.6/1 kV and built according to strict Polish standards, ensuring reliable performance in harsh mining environments. The cable is available in 2-, 4-, and 5-core configurations, with high-quality multi-stranded, galvanized copper conductors, durable rubber insulation, and a tough, flame-retardant, oil-resistant outer sheath. Its construction not only meets the rigorous demands of mining operations but also offers excellent flexibility and mechanical strength, making it suitable for both fixed installations and mobile applications.
6/30/20215 min read