35kV TBTRZY Mineral Insulated Metal Sheathed Cable Water Resistant

TBTRZY is a flexible mineral-insulated, metal-sheathed low-voltage power cable (0.6/1kV) widely used in fire-resistant circuits. It is suitable for emergency feeders and critical building equipment requiring low-smoke, halogen-free materials and reliable fire resistance.

When your low-voltage lines are located within high-density buildings or critical infrastructure, cable selection becomes an integral part of safety design. TBTRZY is ideal for life-safe feeders and critical equipment due to its combination of mineral insulation and a metallic protective layer, along with its flexible handling. This cable facilitates safer wiring, reduces joints, and ensures more reliable acceptance by fire protection systems.

TBTRZY is typically described as a series of flexible, mineral-insulated, fire-resistant cables. It uses inorganic mineral insulation as the primary insulation medium, with a metallic protective layer, and is usually paired with a low-smoke, halogen-free outer sheath for easy identification and installation (depending on the project).

Typical rated voltage: 0.6/1kV (low-voltage distribution and critical feeders).

• Power Supply for Firefighting Equipment (Fire Pumps, Sprinkler Systems)
• Smoke Exhaust and Staircase Booster Fan Feeders
• Power Supply for Emergency Lighting and Evacuation Routes
• Power Supply for Fire Control Rooms and Critical Monitoring
• Power Supply for Fire Elevators and Critical Vertical Transport

• Airports, Hospitals, Shopping Malls, Hotels, Conference Centers, Parking Lots
• Power Supply Lines for Subways, Railways, and Tunnels
• High-Temperature Industrial Areas (Metallurgy, Glass, Heavy Industry)

• Petrochemical, Mining, where stronger fire-resistant cables are required.

• Flexible Installation for Complex Lines

  Designed to reduce the installation difficulties common with rigid mineral-insulated cables, especially in termination connections and long-distance lines.

• Critical Feeder Fire Resistance Focus

  Typically specified in the safety path and may require meeting project acceptance criteria consistent with fire performance testing (standards and ratings depend on the bill of quantities).

• Low-smoke, halogen-free strategy (if specified)

  Typically used in enclosed public spaces to provide clearer evacuation conditions and reduce the risk of corrosive gases, depending on the specified sheathing system and standards.

• High emphasis on mechanical reliability

  Selection of metallic sheathing and mineral insulation materials to improve the reliability of critical pipelines and reduce the risk of rework during inspection and commissioning.

• Conductor: Copper
• Primary insulation: Inorganic mineral insulation (typically magnesium oxide-based)
• Metallic protective layer: Metallic sheath or metallic layer (flexible structure)
• Outer sheath: Typically a low-smoke, halogen-free polymer sheath for identification and handling (if required)
• Cable type: Fixed-installation fire-resistant low-voltage power cable

1. Flexible conductor stranding

   The copper strands are formed to achieve flexibility and meet resistance targets.

2. Mineral insulation filling and compaction

   Mineral insulation material is filled and compacted to form the primary insulation system.

3. Metallic layer formation

   A metallic protective layer is formed to provide sealing, mechanical stability, and line durability.

4. Sheath Application (if specified)

   Apply a protective outer sheath to enhance visibility, abrasion resistance, and field handling capabilities.

5. Routine Validation

   Typical checks include conductor resistance, standard-compliant electrical testing, structural integrity, dimensional verification, and marking checks.

Many TBTRZY products are designed for high-temperature operating environments and can be specified, depending on project standards and acceptance plans, for withstanding high continuous operating temperatures and short-term extreme exposures under emergency conditions.

1C / 2C / 3C / 4C / 5C

1.5 2.5 4 6 10 16 25 35 50 70 95 120 150 185 240 300 400

• 1C x 6
• 1C x 10
• 1C x 16
• 1C x 25
• 2C x 2.5
• 2C x 4
• 2C x 6
• 3C x 2.5
• 3C x 4
• 3C x 6
• 4C x 10
• 4C x 16
• 4C x 25
• 5C x 10
• 5C x 16
• 5C x 25

• 1 core: 1.5 to 630 mm²
• 2 cores: 1.5 to 400 mm²
• 3 cores: 1.5 to 400 mm²
• 4 cores: 1.5 to 400 mm²
• 5 cores: 1.5 to 400 mm²
• Mixed cores (examples): 3 cores + 1 core, 4 cores + 1 core, 3 cores + 2 cores, 4 cores + 2 cores (specifications depend on project progress)

• Confirm acceptance criteria: Fire rating, test methods, and documentation requirements in the Bill of Quantities (BOQ)
• Confirm if your wiring requires low-smoke halogen-free specifications (LSZH)
• Confirm Voltage Rating and System Configuration
• Select Core Wires Based on Circuit Design (Neutral/Protective Electrical Wiring Layout)
• Select Cross-Section Based on Load, Line Length, Allowable Voltage Drop, Grouping, and Environmental Conditions
• Determine Target Cut Length to Reduce Joints on Critical Lines
• Confirm Matching Terminal Kits and Installation Instructions
• Confirm Delivery and Packaging Schedule for Multi-Dimensional Bills of Quantities

• Product: TBTRZY
• Voltage Rating: 0.6/1kV
• Required Standards/Requirements: __
• Fire Rating Requirement (Rating/Duration): __
• Low Smoke Halogen-Free (LSZH) Requirement: Yes/No
• Number of Cores: __
• Cross-Section and Quantity: __
• Total Length (meters): __
• Line Type: Riser/Shaft/Corridor/Tunnel/Equipment Room
• Destination: Country and Port: __
• Trade Terms: __
• Packaging: Coil/Roll
• Preferred Cut Length: __
• Required Documents: __

• Question 1: What is TBTRZY primarily used for? A: TBTRZY is typically used for low-voltage life safety and critical service feeders, such as fire pumps, smoke extraction systems, emergency lighting, and other critical building equipment.
• Q2: Is TBTRZY a low-voltage cable? A: TBTRZY is widely used in 0.6/1kV low-voltage distribution and critical feeders (please confirm project standards and markings).
• Q3: Why choose TBTRZY instead of standard XLPE/PVC cable? TBTRZY is typically used in fire-safe packaging because it features mineral insulation with a metallic protective layer to improve wiring reliability and meet fire performance acceptance requirements for critical circuits.
• Q4: Is TBTRZY flexible? A: TBTRZY is typically described as a flexible mineral-insulated cable, offering advantages over rigid MI structures in terms of ease of handling and reduced installation limitations.
• Q5: Does TBTRZY produce toxic fumes in a fire? A: Many TBTRZY specifications emphasize the selection of low-smoke, halogen-free materials (when specifying the use of an LSZH sheathed system). Please confirm your Bill of Materials (BOQ) requirements and the sheathing materials provided.
• Q6 What information is needed for an accurate quote? A: Required standards/guidelines, fire resistance requirements, conductor count, specification list, total length (meters), cabling type, LSZH requirements, destination, packaging preferences, and required documentation.

• Over Productions Service:

  JinHong has a wide range of cable and conductor products for you to choose from. We will provide caring services and professional project solutions for everyone who needs them.

• Quality Certification Services:

  JinHong cable products are manufactured according to GB, IEC, BS, NFC, ASTM, DIN, and other international standards. Our technical team can customize cable products that meet your requirements according to your needs.

• Profession Customer Service:

  JinHong provides free professional consulting services to provide you with one-stop project solution services and rapid product delivery solutions.

• Delivery And Shipping Services:

  While we at JinHong provide high-quality cables, we also provide good delivery solutions. While ensuring the safe delivery of products, we provide the best packaging and transportation solutions, greatly reducing customers’ transportation costs.

JinHong cable packaging is provided in the form of wooden reels, corrugated boxes, and coils. The cable ends are sealed with BOPP self-adhesive tape and a non-hygroscopic sealing cap to protect the cable ends from moisture. We can print the required marks on the outside of the barrel with waterproof material according to customer requirements.