Zhongdong Cable Co., Ltd.
| Conductor | Copper |
| Armoure | Steel tape armoured |
| Delivery Time | 7-30days based on the order quantity |
| Feature | Fire resistant |
| Payment Terms | L/C,T/T,Western Union |
| Insulation | XLPE |
| Voltage | 26/35kV |
| Jacket | FR-PVC |
| Core No | three |
| Supply Ability | 100km/week |
| Screen | Coppper wire |
| Packaging Details | Rolls, Wooden Drums, Steel Drums, Reels or customized |
| Model Number | ZR-YJV22 / N2XSERY |
| Certification | ISO 9001:2015, IEC 60502-2, CE, EAC |
| Brand Name | OEM |
| Place of Origin | Hebei, China |
View Detail Information
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Product Specification
| Conductor | Copper | Armoure | Steel tape armoured |
| Delivery Time | 7-30days based on the order quantity | Feature | Fire resistant |
| Payment Terms | L/C,T/T,Western Union | Insulation | XLPE |
| Voltage | 26/35kV | Jacket | FR-PVC |
| Core No | three | Supply Ability | 100km/week |
| Screen | Coppper wire | Packaging Details | Rolls, Wooden Drums, Steel Drums, Reels or customized |
| Model Number | ZR-YJV22 / N2XSERY | Certification | ISO 9001:2015, IEC 60502-2, CE, EAC |
| Brand Name | OEM | Place of Origin | Hebei, China |
| High Light | 26/35kV fire resistant armoured power cable ，fire resistant XLPE power cable ，three core STA/PVC power cable | ||
26/35kV Fire Resistant Armoured Power Cable CU/XLPE/CWS/STA/PVC Three Core
Product Overview
The 26/35kV CU/XLPE/CWS/STA/PVC three core fire resistant armoured cable is designed for medium voltage power systems where safety and reliability cannot be compromised. It is commonly used in substations, underground networks, industrial plants, tunnels, and EPC projects that require stable power transmission under harsh operating conditions.
The cable uses XLPE insulation for strong electrical and thermal performance, a copper wire screen (CWS) for field control, and steel tape armour (STA) to protect against mechanical impact. The outer PVC sheath provides additional protection against moisture and abrasion.
It is suitable for direct burial, cable trenches, and duct installation, especially in environments where fire safety and system continuity are important.
Application
This cable is typically used in:
Substation power distribution systems
Industrial plants and heavy manufacturing facilities
Underground urban power networks
Metro and tunnel projects
Mining and oil & gas installations
EPC infrastructure projects
In mining and industrial environments, the cable is often selected for its ability to handle:
Mechanical stress
Moisture exposure
Fire risk areas
Continuous power demand
Construction
· Conductor: Stranded copper conductor
· Conductor Screen: Semi-conductive layer for electric field control
· Insulation: XLPE with stable thermal and dielectric performance
· Insulation Screen: Semi-conductive layer for uniform field distribution
· Metallic Screen: Copper wire screen for grounding and fault current path
· Armour: Galvanized steel tape armour (STA) for high tensile strength and mechanical protection
· Fillers: To maintain circular cable shape and stability
· Outer Sheath: PVC (ST2), resistant to moisture and abrasion
Operating Conditions
Operating temperature: -20°C to +90°C
Short-circuit temperature: up to 250°C (max. 5 seconds)
Minimum bending radius: 15 × overall diameter
Suitable for underground direct burial
Specification
| No.of Cores and Nominal Cross Section (mm²) | Nominal Insulation Thickness (mm) | Nominal Steel Wire Diameter (mm) | Nominal Sheath Thickness (mm) | Approx. Overal Diameter (mm) | Approx. Weight (kg/km) | Max. DC Resistance of | ||
| Conductor at 20℃ (Ω/km) | ||||||||
| Cu | Al | Cu | Al | |||||
| 3×50 | 8 | 3.15 | 3.5 | 81.1 | 9605 | 8742 | 0.387 | 0.641 |
| 3×70 | 8 | 3.15 | 3.6 | 85.2 | 10701 | 9453 | 0.268 | 0.443 |
| 3×95 | 8 | 3.15 | 3.7 | 89.2 | 11990 | 10259 | 0.193 | 0.32 |
| 3×120 | 8 | 3.15 | 3.8 | 92.2 | 13154 | 10964 | 0.153 | 0.253 |
| 3×150 | 8 | 3.15 | 3.9 | 95.9 | 14690 | 11985 | 0.124 | 0.206 |
| 3×185 | 8 | 3.15 | 4.1 | 100 | 16324 | 12916 | 0.0991 | 0.164 |
| 3×240 | 8 | 3.15 | 4.2 | 105.3 | 18603 | 14180 | 0.0754 | 0.125 |
| 3×300 | 8 | 3.15 | 4.4 | 110.7 | 21139 | 15595 | 0.0601 | 0.1 |
| 3×400 | 8 | 3.15 | 4.6 | 117.3 | 24818 | 17675 | 0.047 | 0.0778 |
| 3×500 | 8 | 3.15 | 4.8 | 125.4 | 29075 | 20009 | 0.0366 | 0.0605 |
| 3×630 | 8 | 3.15 | 5.1 | 134.2 | 34299 | 22527 | 0.0283 | 0.0469 |
Fire Resistant Performance
This cable is designed to maintain circuit operation under fire conditions for a defined period, which is critical in:
Emergency power systems
Tunnel ventilation and safety systems
Substation control circuits
Industrial shutdown systems
The construction helps slow flame spread and maintain electrical integrity during abnormal conditions.
Engineering Advantages
Strong mechanical protection from STA armour
Stable electrical performance with XLPE insulation
Good screening performance with copper wire screen
Suitable for underground and high-risk installations
Long service life in industrial environments
Low maintenance after installation
Quality & Testing
Each production batch is tested before delivery, including:
High voltage test
Conductor resistance test
Insulation and sheath inspection
Fire resistance performance check
Certificates and test reports can be provided for project approval when required.
FAQ
Q1: What is the main difference of fire resistant cable?
It can continue working for a certain time during fire, helping critical systems stay powered.
Q2: Can it be installed underground?
Yes. The STA structure is designed for direct burial and underground use.
Q3: Where is this cable usually used?
It is commonly used in substations, tunnels, industrial plants, and EPC projects.
Q4: What is the service life?
Normally 25–30 years depending on installation and operating conditions.
Q5: Is it suitable for mining projects?
Yes, it is often used in mining power distribution due to its mechanical strength and durability.
Company Details
Business Type:
Manufacturer
Year Established:
2006
Total Annual:
150000000-200000000
Employee Number:
300~400
Ecer Certification：
Verified Supplier
Founded in 2006, Zhongdong Cable is a professional cable manufacturer with a production base covering 67,000 square meters. Equipped with 30 production lines, 30 testi... Founded in 2006, Zhongdong Cable is a professional cable manufacturer with a production base covering 67,000 square meters. Equipped with 30 production lines, 30 testi...
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