VG 95218-66: Electrical Cables and Insulated Wires
1. Overview of VG 95218-66 **VG 95218-66** defines the technical specifications for a specialized type of cable used in **demanding environments**, such as military, aviation, and industrial applications. It ensures cables are reliable, durable, and safe under extreme conditions.
Key Characteristics: - Double Screened: Enhanced protection against EMI and RFI (Radio Frequency Interference).
- Halogen-Free Materials: Reduces the release of toxic gases and corrosive fumes in fires.
- Low Fire Hazard: Limits flame spread, smoke production, and overall fire risks.
- Triple Formation: Three conductors arranged for signal integrity and reduced cross-talk.
- Robust Sheath: Provides mechanical protection and environmental resistance.
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2. Construction of VG 95218-66 Cables 1. Conductor: - Typically made of **annealed copper**, which may be tinned for corrosion resistance.
- Stranded construction ensures flexibility and durability.
2. Insulation: - Made of **halogen-free materials**, ensuring minimal toxicity and compliance with environmental standards.
3. Double Screening: - **Primary Screen**: Applied to individual conductors for EMI protection.
- **Secondary Screen**: Applied to the entire cable assembly for enhanced shielding.
- Materials include aluminum foil or braided copper for optimal shielding effectiveness.
4. Sheath: - Outer sheath made of halogen-free, flame-retardant polymer, offering protection from mechanical wear, UV radiation, and chemicals.
5. Triple Formation: - Three individually insulated and screened conductors twisted together to maintain signal integrity and minimize electromagnetic interference.
6. Halogen-Free, Low Fire Hazard Properties: - Reduces the spread of flames.
- Minimizes smoke generation and release of corrosive gases, ensuring safety in enclosed environments like vehicles or control rooms.
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3. Applications of VG 95218-66 Cables These cables are designed for environments requiring high reliability, safety, and EMI protection. Common applications include:
- Military Applications: Wiring for vehicles, command systems, and communication devices.
- Aerospace and Aviation: Signal and power cables in aircraft and drones.
- Industrial Settings: Environments with high electromagnetic interference, such as factories or control rooms.
- Marine and Offshore Installations: Wiring for ships, submarines, and offshore platforms where fire safety is critical.
- Rail and Transportation: Electrical systems for trains, metros, and trams, ensuring reduced fire risks in tunnels or stations.
Example Use Case: In a **military vehicle**, VG 95218-66 cables are used to connect sensitive communication equipment, ensuring signal integrity even in environments with high EMI, while also meeting fire safety standards.
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4. Advantages of VG 95218-66 Cables 1. Superior EMI Protection: - Double screening ensures minimal electromagnetic interference, critical for sensitive signal transmission.
2. Enhanced Fire Safety: - Halogen-free materials reduce the spread of flames and smoke.
- Minimizes corrosive gases, protecting life and equipment in confined spaces.
3. Durability: - Robust sheath and construction withstand harsh environmental conditions, including mechanical stress, chemicals, and UV radiation.
4. Signal Integrity: - Triple formation and individual screening reduce cross-talk and ensure consistent signal transmission.
5. Compliance with Standards: - Meets stringent military and industrial specifications for safety, reliability, and performance.
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5. Testing Requirements for VG 95218-66 Cables Cables conforming to **VG 95218-66** undergo rigorous testing to ensure compliance with performance and safety standards:
1. Electrical Tests: - **Insulation Resistance Test**: Ensures insulation maintains its integrity under voltage.
- **Conductor Resistance Test**: Verifies the conductivity of the copper or tinned copper core.
2. EMI Testing: - Tests the cable's shielding effectiveness against electromagnetic and radio frequency interference.
3. Fire Performance Tests: - Flame propagation tests to verify the cable limits flame spread.
- Smoke density tests to confirm low smoke production.
- Toxicity tests to measure emissions of halogen and corrosive gases.
4. Mechanical Tests: - Tensile and elongation tests for sheath and insulation materials.
- Abrasion resistance tests for the sheath.
5. Environmental Tests: - Resistance to UV radiation, temperature extremes, and moisture.
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6. Compliance and Standards Related Standards for VG 95218-66 Cables: | Standard | Purpose |
| VG 95218 | General series for military-grade electrical cables. |
| IEC 60332 | Flame retardancy tests for fire-resistant cables. |
| EN 50267 | Halogen acid gas measurement during combustion. |
| EN 61034 | Measurement of smoke density during fire tests. |
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7. Conclusion **VG 95218-66** specifies cables that combine high performance, reliability, and safety. These cables are designed for environments requiring superior electromagnetic shielding, fire safety, and mechanical durability, making them indispensable in **military, aerospace, and industrial applications**.
Key Takeaway: VG 95218-66 cables are engineered to deliver exceptional performance in demanding environments, ensuring safety, reliability, and compliance with stringent standards.
"VG 95218-66 cables: Designed for reliability, safety, and performance in the most demanding environments."