Product Overview
Multicore flexible halogen-free silicone cable SiHF/SiHF-C-Si delivers extreme temperature resilience (-60°C to +180°C) for harsh industrial environments. Certified to DIN VDE 0285-525-2-83/DIN EN 50525-2-83, this cable maintains electrical integrity and flexibility in high-heat, corrosive, and radiation-exposed applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Standards | DIN VDE 0250-1, DIN EN 50525-2-83 |
| Voltage Rating | 300/500V AC |
| Temp Range | -60°C to +180°C (Short-term: 220°C) |
| Conductor Temp Limit | +180°C continuous |
| Test Voltage | 2000V AC |
| Breakdown Voltage | ≥5000V |
| Insulation Resistance | ≥200 MΩ·km |
| Bending Radius | Fixed: 4×Ø · Flexing: 7.5×Ø |
| Radiation Resistance | 20 Mrad (20×10⁶ cJ/kg) |
| Flame Propagation | Self-extinguishing (IEC 60332-1-2) |
| Halogen Content | Free (IEC 60754-2 compliant) |
Construction Details
1. Conductor
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Material: Tinned copper (99.99% electrolytic)
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Class: DIN VDE 0295 Cl.5 / IEC 60228 Cl.5 (fine-stranded)
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Flexibility: Optimized lay length for repeated bending
2. Insulation
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Material: Silicone rubber
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Thickness: DIN VDE 0285 compliant
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Core Identification:
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≤5 cores: Color-coded
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≥6 cores: Black with white numbering
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Ground: Green-Yellow (GN-YE)
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3. Sheath
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Material: Halogen-free silicone rubber
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Color: Red-brown (standard) with meter marking
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Protection: Forms SiO₂ insulating layer during fire
Material Properties
| Component | Key Characteristics | Test Standard |
|---|---|---|
| Silicone | Dielectric stability @180°C | DIN VDE 0285 |
| Tinned Copper | Corrosion resistance ≥98% IACS | IEC 60228 Cl.5 |
| Sheath | Auto-extinguishing, halogen-free | IEC 60754-2 / DIN EN 50267-2-2 |
Key Performance Advantages
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Thermal Stability: Maintains flexibility from -60°C to +180°C
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Fire Safety: Zero halogen emission, forms insulating SiO₂ ash
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Chemical Resistance: Withstands oils, alcohols, diluted acids/alkalis (pH 1-14)
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Radiation Hardened: Stable up to 20 Mrad (nuclear/medical applications)
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Power Derating Table:
Temp (°C) 150 155 160 165 170 175 Load % 100 91 82 71 58 41
Application Scenarios
High-Temperature Industrial
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Steel mill furnace wiring
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Glass manufacturing equipment
Critical Infrastructure
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Nuclear power plant control systems
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Petrochemical reactor instrumentation
Harsh Environments
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Food processing sterilization zones
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Pharmaceutical autoclave connections
Mobile Equipment
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Welding machinery cables
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Foundry crane electrification
Engineering Selection Guide
| Factor | Calculation Method | Critical Values |
|---|---|---|
| Current Rating | DIN VDE 0100 (145°C base) | Derate per temp table above |
| Voltage Drop | ΔU = (I × L × √3)/(κ × S × cosφ) | Max 5% @ 180°C |
| Bending Stress | DIN VDE 0482-332-1-2 | >50,000 cycles @ 7.5×Ø |
| Installation | Critical Restriction: Fixed installs require ventilated conduits/ducts above 90°C |
Compliance & Certifications
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Primary Standards:
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DIN VDE 0285-525-2-83
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DIN EN 50525-2-83
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IEC 60228 Cl.5
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Fire Safety:
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IEC 60332-1-2 (Flame retardancy)
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IEC 60754-2 (Halogen-free)
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Environmental: RoHS 3 / REACH
Certification Marks: VDE ● TÜV ● CE ● UKCA
Critical Installation Notes
⚠️ Mandatory Requirements
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Fixed installations MUST use ventilated conduits/ducts where ambient >90°C
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Avoid tight bends: Minimum 7.5× cable diameter for dynamic applications
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Use silicone-compatible cable glands for IP protection
AWG sizes are approximate equivalents - always select by mm² cross-section