A shielded and armored cable integrates electromagnetic shielding (foil/braid) with mechanical protection (steel tape or wire armor) in a single construction. It is designed for low-voltage (0.6/1 kV) control or power applications where both EMI/RFI suppression and high mechanical durability are required. Typical standards include IEC 60502-1, IEC 60332, and VDE 0250. Common configurations use annealed copper conductors, PVC or XLPE insulation, copper tape/braid shielding, and STA/SWA armor, ensuring reliable performance in industrial, underground, and interference-prone environments.
| Layer Order (Inside → Outside) | Material / Type | Function | Key Specification |
|---|---|---|---|
| Conductor | Annealed Copper (Class 1/2/5) | Current/signal transmission | IEC 60228 |
| Insulation | PVC or XLPE | Electrical isolation | 70°C / 90°C rating |
| Core Assembly | Twisted multi-core | Signal stability / phase balance | 2–37 cores typical |
| Shield Layer | Copper tape / braid / Al-foil + drain | EMI/RFI suppression | ≥ 70–100% coverage |
| Inner Sheath (Bedding) | PVC | Mechanical separation | IEC 60502 |
| Armor | STA (steel tape) / SWA (steel wire) | Impact resistance, tensile strength | BS 5467 / IEC |
| Outer Sheath | PVC / LSZH | Environmental protection | IEC 60332 / 60754 |
| Model Code | Description | Key Features |
|---|---|---|
| KVVP22 | PVC insulated, shielded, steel tape armored | EMI protection + underground suitability |
| KVVP2-22 | Copper tape shield + STA armored | Enhanced shielding effectiveness |
| KYJVP22 | XLPE insulated, shielded, armored | Higher ताप rating (90°C) |
| CY-SWA | Braided shield + steel wire armor (VDE type) | Flexible + strong mechanical protection |
| Instrumentation Armored Shielded | Multi-pair + individual/overall shield + armor | High signal integrity in harsh environments |
| Parameter | Typical Range |
|---|---|
| Rated Voltage | 300/500 V, 450/750 V, 0.6/1 kV |
| Cross-Section (Control) | 0.75 – 6 mm² |
| Cross-Section (Power) | 1.5 – 240 mm² (up to 630 mm² possible) |
| Core Count | 2 – 37 cores (control) |
| Shield Coverage | ≥ 85% (braid) / 100% (foil) |
| Operating Temperature | 70°C (PVC), 90°C (XLPE) |
| Bending Radius | ≥ 12–15 × cable diameter (armored) |
Shield layer blocks external EMI and internal signal leakage
Critical for PLC, instrumentation, and VFD systems
Armor protects against:
Impact and crushing
Rodent damage
Underground الضغط conditions
Outer sheath (PVC/LSZH) ensures resistance to moisture, oil, UV, and fire
Define Application Type
Control/instrumentation → multi-core shielded + armored
Power distribution → armored with optional shielding
Determine Cross-Section and Core Count
Control: 0.75–2.5 mm² typical
Power: size based on ampacity (IEC 60287)
Select Shield Type
High-frequency EMI → foil shield
Industrial noise → braid or combination shield
Choose Armor Type
Multi-core → STA
Single-core → AWA (avoid magnetic losses)
Check Installation Environment
Underground → mandatory armoring
High-interference zones → mandatory shielding
Verify Compliance
IEC 60502-1 (construction)
IEC 60332 (flame retardancy)
IEC 60754 (LSZH performance)
Confirm Installation Limits
Bending radius ≥ 12–15 × OD
Ensure proper shield grounding (single-point or both ends depending on system)
PLC systems, motor control centers
Requires high EMI resistance + mechanical protection
Buried control or power cables
Needs steel armor for physical protection
Signal and control circuits near high विद्युत noise
Use shielded + armored cables for reliability
| Feature | Shielded + Armored Cable | Standard Cable |
|---|---|---|
| EMI Protection | High | Low / None |
| Mechanical Strength | Very High | Moderate |
| Installation | Underground / harsh محیط | Indoor / सामान्य use |
| Cost | Higher | Lower |
| Reliability | Critical systems | General applications |
Shield Continuity Test (no բաց gaps)
Armor Integrity Check (no վնաս or deformation)
Voltage Withstand Test (e.g., 3 kV / 5 min)
Conductor Resistance Test (IEC 60228)
Flame Retardancy Test (IEC 60332)
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