Features of cables used in heavy-duty industries

When we are talking about heavy-duty industries, it is a collective term for underground mining, steel production industry, open pit mining as well heavy chemical production industries. You can see a lot of applications in this industry such as coal mines, blast furnaces, casting houses and foundries, coal dumps or rolling mills for this industry segment.

Cables in heavy-duty industries have many different features compared to the common ones. These types of cables play a vital role in data and power transmission in any project. In particular, they channel power to devices like excavators, mining vehicles, gravel dredging, conveyor belts and power stations.

When it comes to the cables used in heavy-duty industries, Mr. Oliver uses 3 adjectives to describe them. First of all, “robust”, because of the harsh conditions and environment. And when it comes to reeling, it must be” flexible” and “durable”.

Regarding the cable sizes, normally the cables used in heavy-duty industries are in bigger sizes than those of the common ones. However, generally speaking, it depends on the applications, ranging from small sizes for control to very big sizes for excavators and power stations, up to 3.240mm². As Mr Oliver mentioned, the common size is normally 3.150mm² for underground mining projects.

As for voltage, the range starts from low voltage down to 1KV up to medium voltage cables 3.6/6 - 12/20 kV. To ensure the robustness of cables, we are using special heavy-duty rubber compounds, or PUR - which is also very abrasion-resistant, in some applications.

For heavy-duty industries, HELUKABEL supplies a variety of special cables for reeling, festoon and mining systems. Our cables for this segment meet international standards and possess the necessary features to ensure optimal performance in demanding environments.

Here are some exceptional products with their technical data you might want to consider:

NSHTÖU is a reeling cable that is used for high mechanical stress, especially for applications with frequent winding and unwinding for building machinery, conveyors, cranes, …

• Temperature range:

. Flexing: -25°C to +80°C

. Fixed: -40°C to +80°C

• Nominal voltage: AC U₀/U 600/1000 V

• Max. permissible operating voltage:

. Alternating current (AC) conductor/earth: 700 V

. Three-phase alternating current (AC) conductor/conductor: 1200 V

. Direct current (DC) conductor/earth: 900 V

. Direct current (DC) conductor/conductor: 1800 V

• Test voltage core/core: 2500 V

• Tensile stress during installation and operation: 15 N/mm²

• Minimum bending radius:

. ≤ 20 mm: 5x outer-ø

. > 20 mm: 6x outer-ø

(N)SHTÖU-V is used for vertical drum operation under extreme mechanical stress and on moving cable carriers. It is commonly found in construction machines, conveyor, transport and crane systems.

• Temperature range: flexing -25°C to +80°C

• Max. Temperature at conductor

. In operation: +90°C

. In short-circuit: +250°C

• Nominal voltage: U₀/U 0.6/1 kV

• Max. permissible operating voltage:

. In three-phase and one-phase AC systems: U₀/U 0.7/1.2 kV

. In DC systems: U₀/U 0.9/1.8 kV

• Test voltage: 4 kV

• Minimum bending radius: 7.5x cable Ø

TROMMPUR®-H enables the use of smaller drive motors and drums compared to NSHTÖU. They are used as robust and all-weather resistant cables in the harshest operating environments in mining, in flexible handling equipment and railway motors.

• Temperature range:

. Flexing: -40°C to +80°C

. Fixed: -50°C to +80°C

• Nominal voltage:

. DIN VDE: 600/1000 V

. UL: 1000 V

• AC test voltage: 50 Hz core/core 4000 V

• Insulation resistance: min. 20 MOhm x km

• Speed of motion: up to 250 m/min

• Minimum bending radius: 6x cable Ø

PVC Flat is used mainly as trailing cable for crane installations, floor conveyer systems and shelf control units.

• Temperature range:

. Flexing: -5°C to +70°C

. Fixed installation: -40°C to +80°C

• Nominal voltage:

. Up to 1 mm²: U₀/U 300/500 V

. From 1,5 mm²: U₀/U 450/750 V

• Test voltage:

. Up to 1 mm²: 2000 V

. From 1,5 mm²: 2500 V

• Minimum bending radius: 10x cable thickness

• Radiation resistance: up to 80x10⁶ cJ/kg (up to 80 Mrad)

NEO Flat is used mainly as trailing cable for crane installations, floor conveyer systems and shelf control units. This type of cable is also available for export with UL-approval on request.

• Temperature range:

. Flexing: -30°C to +80°C

. Fixed installation: -40°C to +80°C

• Nominal voltage: U₀/U 300/500 V

• Test voltage: 3000 V

• Minimum bending radius: 10x cable thickness

• Radiation resistance: up to 50x10⁶ cJ/kg (up to 50 Mrad)

NSSHÖU is suited as a connecting cable for very high mechanical stress in underground mining and tools for use in industries as well as outdoor use. It is also used for mining industry, surface mining, stone-pits, on building sites, …

• Temperature range:

. Flexing: -25°C to +80°C

. Fixed: -40°C to +80°C

• Permissible operating temperature at conductor: +90°C

• Nominal voltage: U₀/U 0.6/1 kV

• Operating voltage:

. In three-phase and one-phase AC systems: U₀/U 0.7/1.2 kV

. In DC systems: U₀/U 0.9/1.8 kV

• Test voltage: 3000 V

• Insulation resistance: min. 20 MOhm x km

• Tensile strength:

. Statical load: total

. Cross-section x15 N/mm²

• Minimum bending radius:

. Fixed installation: 4x cable Ø

. Flexing: 10x cable Ø

. Without forced operation: 15x cable Ø

Besides, you can learn about the following additional products:

• Reeling cables: (N)SHTÖU-FO (LWL), PUR-HF 0,6/1kV, TROMMPUR®-V FO (LWL), (N)TSCGEWÖU-MSR, (N)TSCGEWÖU-MSR+FO,…

• Festoon cables: HELUPOWER® REELABILITY PUR-HF Festoon, PVC-Flat-CY, NEO-Flat-C, (N)GRDGOEU, (N)GRDGCGOEU, (N)SHTOEU-FO (LWL),...

• Mining cables: (N)TSCGEWÖU-TR, (N)TSCGEWÖU-TR + FO, (N)TSCGEWÖU-W, SHD-GC, PUR-HF MINE,…

>>> Read more: Mining Industry flyer by HELUKABEL Vietnam

With a team of highly qualified engineers, we can offer advice on selecting the right cables to suit the needs of heavy industry. Contact us for support!

HELUKABEL® Vietnam

905, Nguyen Kiem Street, Ward 3, Go Vap District, Ho Chi Minh City 700000, Vietnam

Tel. +84 28 77755578 | info@helukabel.com.vn | www.helukabel.com.vn