Braidless Silicone Rubber Cable for 5kV High-Temperature Power Wiring
Braidless silicone rubber cable is a single-core 5000V cable designed for high-temperature industrial wiring where ordinary PVC or general rubber cable insulation cannot provide enough thermal stability. The construction uses a flexible Class H tinned copper conductor and SIR silicone rubber insulation, giving the cable a continuous conductor temperature rating of 200°C with short-time overload and short-circuit temperature margins for demanding heat zones.
This cable is intended for indoor high-temperature environments such as steel mills, foundries, glass manufacturing, turbine and boiler areas, industrial ovens, kilns, heating appliance wiring and cranes or material handling systems exposed to elevated ambient heat. The braidless construction helps reduce weight and simplifies stripping, but it should not be treated as a mechanically armoured or abrasion-protected cable.
Key Engineering Features
- SIR silicone rubber insulation: Provides strong thermal stability for 200°C continuous conductor operation in heat-intensive industrial circuits.
- 5000V voltage rating: Suitable for 5kV equipment wiring and medium-voltage power circuits where the installation matches the listed standards and test requirements.
- Class H tinned copper conductor: Flexible tinned copper wires support handling, termination and resistance to oxidation in high-temperature service.
- Braidless construction: A lighter and easier-to-strip construction compared with braided cable designs, useful where fast termination and flexible routing are important.
- High short-circuit temperature: The supplied data lists 350°C maximum short-circuit conductor temperature for fault-duration assessment.
- Compact bending requirement: Minimum bending radius is 6 x cable overall diameter at laying, helping routing in cabinets, machinery and heat-zone cable paths.
- Indoor high-temperature focus: The supplied performance table marks indoor use as preferred; outdoor UV, oil, chemical and mechanical exposure should be checked before selection.
Technical Specifications
| Product Type | Braidless silicone rubber high-temperature single-core cable |
| Voltage Rating | 5000V |
| Number of Cores | 1 |
| Conductor Material | Tinned copper wires |
| Conductor Type | Circular, Class H flexible |
| Insulation Material | SIR silicone rubber |
| Nominal Insulation Thickness | 4.06mm |
| Minimum Bending Radius | 6 x overall diameter at laying |
| A.C. Testing Voltage | 18 / 5 kV/min |
| Max. Continuous Conductor Temperature | 200°C |
| Max. Short-Time Overload Temperature | 280°C for 2 hours |
| Max. Short-Circuit Temperature | 350°C |
| Preferred Environment | Indoor high-temperature environments |
Cable Construction
- Tinned Copper Conductor: Class H flexible tinned copper wires for the single-core current path.
- SIR Silicone Rubber Insulation: Silicone rubber insulation, 4.06mm nominal thickness, providing the thermal and electrical insulation layer.
Standards and Compliance
| ANSI/NEMA WC 71 | Listed in the supplied file for silicone rubber insulated cable with 5kV shielded and unshielded construction reference. |
| ICEA S-96-659 | Listed in the supplied file for 5kV SIR insulated cable reference. |
| ASTM B33 | Reference for tinned soft or annealed copper wire. |
| ASTM B172 | Reference for conductors of insulated cables, with Class H comparison noted in the supplied data. |
Dimensions and Electrical Data
| Configuration | Cross Section | Max. DC Resistance at 20°C | Overall Diameter | Approx. Weight | Min. Bending Radius |
|---|---|---|---|---|---|
| 1×2 AWG | 33.6mm² | ≤ 0.58 Ω/km | 16.1mm | 566.7kg/km | 6 x D |
| 1×4/0 AWG | 107mm² | ≤ 0.179 Ω/km | 22.5mm | 1400.5kg/km | 6 x D |
Performance Overview
| High Temperature Resistance | 10/10; 200°C continuous |
| Voltage Rating | 8/10; 5000V |
| Flexibility | 9/10; 6 x D bending radius |
| Thermal Stability | 9/10; 350°C short circuit |
| Weather / UV Resistance | 7/10; indoor preferred |
| Oil and Chemical Resistance | 7/10; standard SIR |
| Mechanical Protection | 7/10; braidless design |
| Corrosion Resistance | 8/10; tinned copper |
Applications
- Steel mills, foundries and glass manufacturing areas with extreme heat exposure.
- Power generation equipment, including turbine and boiler areas.
- Industrial ovens, kilns and heating appliance wiring.
- Cranes and material handling systems operating near high-temperature equipment.
- Indoor 5kV circuits where silicone rubber insulation and flexible tinned copper conductors are required.
Selection Notes for Buyers
When selecting braidless silicone rubber cable, confirm the system voltage, conductor size, maximum conductor temperature, routing temperature, termination method, available bending space and whether the cable will be exposed to oil, chemicals, UV or abrasion. The supplied data identifies indoor high-temperature environments as the preferred use case. If the cable route includes dragging, repeated flexing, outdoor exposure or mechanical impact, confirm whether additional protection, a different sheath system or a braided / armoured construction is required.
For quotation, provide the required AWG size or cross section, cable length, operating temperature, installation drawing, termination type, test document requirements and any project standard notes. For long runs, voltage drop and conductor resistance should be checked before final size selection.
Why Choose Tebaoflex
Tebaoflex supports industrial and high-temperature cable buyers with cable construction review, size selection, custom length supply, marking, packing and project documentation. For 5kV silicone rubber cable enquiries, we can help compare conductor size, insulation requirement, bending radius and working environment before quotation.
FAQ
What is braidless silicone rubber cable used for?
Braidless silicone rubber cable is used for high-temperature indoor power wiring where a 5kV single-core cable with SIR insulation and a flexible tinned copper conductor is required.
What temperature can this cable handle?
The supplied data lists 200°C maximum continuous conductor temperature, 280°C short-time overload temperature for 2 hours and 350°C maximum short-circuit temperature.
Is this cable armoured or braided?
No. This is a braidless construction. It is lighter and easier to strip, but it should not be selected as a mechanically armoured or abrasion-protected cable unless the installation provides suitable protection.
What conductor sizes are listed?
The supplied data lists 1×2 AWG (33.6mm²) and 1×4/0 AWG (107mm²) configurations.
Which standards are listed for this cable?
The supplied file lists ANSI/NEMA WC 71 and ICEA S-96-659, with ASTM B33 and ASTM B172 references for tinned copper conductor materials.