UGEFP UGEFHP TBM Trailing Opencast Mining cable Flexible Rubber Cables up to 35kV

UGEFP and UGEFHP are heavy‑duty TBM trailing flexible rubber cables rated up to 26/35 kV, developed by Taitong Cable under enterprise standard Q/TT 05‑2025 and referenced to JB/T 14660‑2024. They adopt Class 5 copper conductors, EPR insulation and CR rubber sheath, featuring excellent torsion resistance, oil resistance and low‑temperature performance; UGEFP withstands -15 ℃ while cold‑resistant UGEFHP works down to -35 ℃. We serve contractors, project buyers, wholesalers and distributors for metro, tunnel, water diversion and open‑pit mining projects. Our main export markets include Africa, Southeast Asia, the Middle East and Latin America. As a Chinese manufacturer with rich domestic tunneling project experience, Taitong Cable provides full technical support, competitive pricing and custom construction for bulk orders.

From inside to outside for Figure 1 and Figure 2 respectively:

Filler

Insulated core conductor

Conductor screen

Insulation

Insulation screen

Protective conductor core

Semiconducting layer

Sheath

Layers from inner to outer in the figure3:

Filler

Insulated core conductor

Conductor screen

Insulation

Insulation screen

Metallic screen (as protective conductor)

Sheath

Construction of UGEFP & UGEFHP heavy‑duty TBM trailing flexible rubber cables 

---

Conductor: Class 5 copper conductor

Conductor screen: Extruded semiconducting layer, or semiconducting tape wrapping + extruded semiconducting layer

Insulation: EPR compound or equivalent synthetic elastomer; tensile strength ≥ 6.5 MPa; minimum thickness ≥ (90 % of nominal value − 0.1 mm)

Insulation screen: Extruded semiconducting layer, metallic fiber braid, or composite structure of extruded semiconducting layer + semiconducting tape wrapping + metal/fiber braid

(If no protective conductor is required: Braid made of tinned copper wires and polyamide / polyester synthetic yarns, equal spindle counts, opposite laying directions, overall braid coverage ≥ 80 %)

Reinforced design: Steel wire or fiber filler can be placed in cable interstices; or fiber / galvanized copper braid applied outside inner sheath

Outer sheath: CR compound or equivalent synthetic elastomer; minimum thickness ≥ (85 % of nominal value − 0.1 mm)

Colour identification: 

Power core insulation: red, white, blue, marked by colour tape or braid marker. Sheath normally red; other colours available upon agreement

Technical Performance Data of UGEFP and UGEFHP TBM trailing flexible rubber cables 

---

Rated voltage of cable: 3.6/6 kV, 6/6(10) kV, 8.7/10(15) kV, 12/20(24) kV, 18/20(24) kV, 18/30(36) kV, 21/35 kV, 26/35 kV

Conductor continuous operating temperature: 90 ℃

Max. conductor temperature under short circuit (≤5 s): ≤250 ℃

Min. permissible ambient temperature: UGEFP: -15 ℃, UGEFHP: -35 ℃

Min. bending radius: 6 × cable OD

Protective conductor to be properly earthed; conductor cross-section subject to negotiation.

No. of cores: 3+1 and 3+3 cable structure, protective conductors in filled design.

(The cable shall not be exposed to direct sunlight for a long period.)

Insulated cores: subject to insulation water absorption test. Capacitance rise ≤6 % (1–14 d), ≤2.5 % (7–14 d).

Insulated power cores shall withstand the power frequency voltage test specified in the table without breakdown. (See table below.)

4-hour voltage test: The finished cable shall withstand a power frequency voltage test of 4U₀ for 4 hours, with no breakdown occurring during the test.

Applications of TBM Cables to Taitong Cable Enterprise Standard

---

UGEFP and UGEFHP trailing flexible rubber cables are designed for power supply of TBM tunnel boring machines and other mobile underground excavation equipment. Suitable for metro tunnels, railway tunnels, water conveyance tunnels, open‑pit mines (open‑pit mining projects, opencast mining) and non‑coal underground engineering. They tolerate frequent reeling, twisting, bending and exposure to hydraulic oil on site. UGEFHP cold‑resistant type is preferred for high‑latitude or alpine low‑temperature construction sites. Not limited to coal mines, widely adopted for municipal, infrastructure and mining EPC projects.

Additional information

Model code explanation: UG = rubber flexible cable; E = EPR insulation; F = CR sheath; P = screened; J = reinforced; H = cold resistant. The insulation does not adhere to conductor or adjacent insulation cores. Adhesion between insulation and outer sheath is optional. Custom core arrangements including 3+1, 3+3 and 3+3‑S/3 are available. All cables are produced to Taitong enterprise standard Q/TT 05‑2025.

Specifications and Dimensions of UGEFP & UGEFHP TBM trailing flexible rubber cables– 3.6/6 kV Cable

Specifications and Dimensions of UGEFP & UGEFHP TBM trailing flexible rubber cables – 6/6, 6/10 kV Cable

Specifications and Dimensions of UGEFP & UGEFHP TBM trailing flexible rubber cables  – 8.7/10, 8.7/15 kV Cable

Specifications and Dimensions of UGEFP & UGEFHP TBM trailing flexible rubber cables – 12/20, 12/24 kV Cable

Specifications and Dimensions of UGEFP & UGEFHP TBM trailing flexible rubber cables – 18/20(24), 18/30(36) kV Cable

Specifications and Dimensions of UGEFP & UGEFHP TBM trailing flexible rubber cables – 21/35 kV Cable

Specifications and Dimensions of UGEFP & UGEFHP TBM trailing flexible rubber cables – 26/35 kV Cable

Maximum conductor resistance of UGEFP & UGEFHP TBM trailing flexible rubber cables at 20 ℃

Taitong Cable: Your Reliable Source for Domestic and International Standard TBM Trailing Rubber Cables 

---

Taitong Cable boasts nearly 30 years of cable manufacturing experience, serving as a trusted cable supplier for major national and large-scale infrastructure projects across China. We fully understand the actual site demands for UGEFP UGEFHP TBM trailing flexible rubber cables up to 35kV and other tunneling and mining cables. Taitong group operates five large production bases nationwide, including dedicated rubber cable workshops independent from our power cable plants, alongside more than 30 local offices for fast response and on-site coordination. Equipped with advanced production machinery and a professional in-house technical team, Taitong Cable holds a complete set of industry qualifications and can provide full test reports upon clients' request. We are flexible to manufacture rubber trailing cables strictly in accordance with customer-specified standards and technical requirements, consistently achieving high customer satisfaction.

As a direct manufacturer, Taitong delivers high-quality TBM trailing flexible rubber cables at competitive factory prices to global buyers, covering contractors, EPC companies, tunnel and mining project purchasers, wholesalers and distributors. Whether you need standard UGEFP, cold-resistant UGEFHP shield machine rubber cables or custom tunneling reeling cables for metro, water diversion and open-pit mining works, our team supports customized designs, bulk orders and reliable after-sales technical service. Reach out to us today to get your quotation for heavy-duty tunneling rubber cables.

If the TBM shield machine cables under Taitong's enterprise standard meet your procurement requirements and you are interested in cooperation, please feel free to send your inquiry directly to our sales email.

Taitong Cable also supplies TBM and mining cables complying with international regional standards upon request: DIN VDE 0250‑812NSSHÖU / NSSHOEU and DIN VDE 0250‑813 for (N)TSCGEWÖU series, AS/NZS 1802 / AS/NZS 2802 for Australian mining trailing cables, and ICEA S‑75‑381 for SHD‑GC / G‑GC MSHA mining cables. Cables manufactured to your local standard are also available for consultation.