0.69/1.15kV TRM-J Mining Cable

Premium 0.69/1.15kV TRM-J Mining Cable for Heavy-Duty Industrial Applications

Operating heavy mobile machinery in demanding environments requires a power lifeline that combines immense physical durability with exceptional flexibility. The TEBAOFLEX TRM-J mining cable is a 0.69/1.15 kV highly flexible, multi-conductor rubber cable built specifically to thrive under extreme industrial conditions. Engineered to handle continuous movement, very heavy mechanical stress, and exposure to harsh chemicals, this cable ensures uninterrupted power distribution where standard cables would quickly fail.

Why is the TRM-J Cable Essential for Extreme Environments?

As a specialized direct-from-factory manufacturer, TEBAOFLEX designs the TRM-J mining cable to meet the rigorous VDE 0250 part 812 standard. Its superior flexibility and extreme impact and abrasion resistance make it incredibly versatile. It is widely specified for heavy-duty mobile equipment across multiple sectors, including:

• Underground & Open-Pit Mines: Powering mobile cutting machines and conveyors.
• Harbors & Steel Mills: Supplying energy to heavy port cranes and smelting equipment facing high ambient temperatures.
• Shaft Sinking & Quarries: Withstanding the punishing rock abrasion and continuous reeling required in deep vertical or rough excavations.

Furthermore, the high-visibility yellow outer jacket prevents accidental run-overs by heavy vehicles in dark environments. For a deeper understanding of how robust electrical infrastructure powers these industries, review the mechanical demands of heavy industrial equipment.

Advanced 6-Layer Concentric Screened Construction

To guarantee maximum physical endurance, our TRM-J cable utilizes a highly resilient 6-layer architecture, enhanced by protective polyester separation tapes:

1. Conductor: Flexible tinned copper wire, Class 5 according to IEC 60228, preventing oxidation in damp environments.
2. Insulation: Premium Ethylene Propylene Rubber (EPR) equivalent to 3GI3 (acc. DIN VDE 0207 part 20). Core identification for 4-core versions includes Black, Blue, Brown, and Green/Yellow (Earth).
3. Assembly: Power cores are securely laid up around a central rubber filler and wrapped in PET tape to maintain a perfectly round structural shape during flexing.
4. Inner Sheath: Extruded EPR rubber type EI 4 (natural color) providing an internal waterproof and shock-absorbing buffer.
5. Concentric Screen: A heavy-duty braid of tinned copper wires (0.30 mm diameter) covering a minimum of 90% of the inner sheath. This is accompanied by polyester tapes under and over the braid for added flexibility and structural isolation.
6. Outer Sheath: High-visibility Yellow, synthetic thermosetting compound type 5GM3 (acc. DIN VDE 0207 part 21). Exceptionally resistant to tearing, oil, flame, and ozone.

Technical Data & Environmental Resistance

Every meter of our TRM-J mining cable is rigorously tested in the TEBAOFLEX laboratory to meet strict IEC and EN standards. Please review the operational limits below:

Rated Voltage (Uo/U)	0.69 / 1.15 kV
Max. Conductor Temperature	+90°C
Max. Short Circuit Temperature	+250°C
Ambient Temp. (Fixed Installation)	-40°C to +90°C
Ambient Temp. (Mobile Application)	-25°C to +90°C
Minimum Bending Radius	Flexing: 6 x Cable Diameter | Fixed: 4 x Cable Diameter
Fire Resistance	Flame retardant acc. to DIN EN 60332-1-2 / IEC 60332-1-2
Chemical & Oil Resistance	Resistant to oil, solvents, petrol, acids, and greases (IEC 60811-404)
Weather Resistance	Highly ozone, UV, and sunlight resistant. Suitable for direct outdoor exposure.

Dimensional Specifications: 4x95mm² Example

TEBAOFLEX manufactures the TRM-J mining cable in numerous configurations, ranging from small 4×2.5mm² control sizes up to massive 4x240mm² power lines. Below are the precise parameters for our popular 4-core 95mm² dimension:

Cores x Size (mm²)	Stranding Power (mm)	Approx. Overall Diameter (mm)	Current in Air at 30°C (Amps)	Approx. Cable Weight (kg/km)
4C x 95 mm²	684 x 0.40	55.5 mm	301 A	6,322 kg/km

* Note: The current carrying capacity varies depending on whether the cable is free in air or reeled. When layered on a reeling drum, specific de-rating factors apply. Please consult our full datasheet for detailed multi-layer reeling capacities.

Frequently Asked Questions (FAQ)

1. What is the difference between TRM-J and TRMC-J mining cables?
While both are heavy-duty mining cables, the TRM-J mining cable is typically designed for low voltage applications (0.69/1.15 kV) and features a single, overall 90% tinned copper braid screen. The TRMC-J is often used for higher medium voltages and features double screening (individual core screens plus an overall screen) for enhanced electrical stress management.

2. Can this cable be fully exposed to the sun and weather in a quarry?
Yes, the 5GM3 synthetic thermosetting compound used for the outer sheath is highly resistant to UV rays, sunlight, and ozone. It is certified for direct exposure in harsh outdoor environments like open-pit quarries and offshore oil rigs.

3. Can TEBAOFLEX provide custom reeling lengths for port cranes?
Absolutely. As an ISO-certified direct manufacturer, we offer custom drum lengths and cross-sections tailored precisely to your machinery’s reeling capacity. To request a tailored quotation or technical consultation, please contact our industrial cable specialists today.