Introducción
El CU/MGT/XLPE/LS/SFA/PVC-FR 0.6/1 (1.2) Cable FR de kV is a high-performance, resistente al fuego, Cable de alimentación blindado de bajo voltaje diseñado para sistemas críticos de distribución de energía.. This cable combines electrical reliability, capacidad de supervivencia al fuego, mechanical protection, and environmental resistance, making it suitable for demanding industrial and infrastructure applications.
With a construction consisting of Conductor de cobre (CU), Mica Glass Tape (MGT), Aislamiento XLPE, Vaina principal (LS), Armadura plana de acero (SFA), and a Flame Retardant PVC outer sheath, this cable is engineered to maintain circuit integrity even under severe fire and mechanical stress conditions.
El rated voltage of 0.6/1 (1.2) kV makes it ideal for low-voltage power transmission where safety, durabilidad, y larga vida útil are mandatory.
Meaning of CU/MGT/XLPE/LS/SFA/PVC-FR
la designación CU/MGT/XLPE/LS/SFA/PVC-FR 0.6/1 (1.2) kV clearly describes the cable structure from the conductor outward:
- CU – Copper Conductor
High-purity annealed copper conductor manufactured in accordance with IEC standards. - MGT – Mica Glass Tape
Fire-resistant tape applied over the conductor or insulation to maintain electrical integrity during fire. - XLPE – Cross-Linked Polyethylene Insulation
High-performance insulation material with excellent dielectric and thermal properties. - LS – Lead Sheath
A continuous metallic sheath providing moisture, químico, and corrosion protection. - SFA – Steel Flat Armour
Mechanical armour offering high resistance to impact, compression, and external forces. - PVC-FR – Flame Retardant PVC Outer Sheath
Final protective layer with enhanced flame-retardant performance.
This multilayer structure makes the cable particularly suitable for instalaciones subterráneas, túneles, power plants, oil & gas facilities, refineries, subestaciones, and emergency power circuits.
Construcción general de cables
un tipico CU/MGT/XLPE/LS/SFA/PVC-FR 0.6/1 (1.2) Cable FR de kV consists of the following layers:
- Conductor de cobre (CEI 60228)
- Mica glass tape fire barrier
- Aislamiento XLPE
- Laid-up cores with fillers (for multi-core cables)
- funda de plomo (LS)
- separador de PVC / lecho
- Armadura plana de acero (SFA)
- Flame retardant PVC outer sheath (PVC-FR)
Each layer serves a specific electrical, térmico, mecánico, or protective function.
Conductor de cobre (CU)
El conductor está hecho de annealed electrolytic copper with high conductivity and excellent mechanical strength. Conductors are manufactured in accordance with CEI 60228, typically as:
- Clase 1 – Solid conductor (mainly for small cross-sections)
- Clase 2 – Stranded conductor (most common for power cables)
Los conductores de cobre garantizan:
- Low conductor resistance
- Alta capacidad de transporte de corriente
- Excellent thermal stability
- Larga vida útil
Mica Glass Tape (MGT) – Fire Resistance Layer
El mica glass tape layer is the key component that gives the cable its resistente al fuego (FR) capability.
Main characteristics:
- Maintains insulation integrity under direct flame
- Withstands temperatures up to 750–950°C
- Prevents short circuits during fire exposure
- Enables circuit operation for emergency systems
This layer is essential for compliance with fire survival requirements in critical installations.
Aislamiento XLPE
Aislamiento XLPE is applied over the conductor or MGT layer.
Key advantages:
- Rated operating temperature: 90° C
- Short-circuit temperature: 250° C
- Alta rigidez dieléctrica
- Excelente resistencia a la humedad, químicos, y envejecimiento
XLPE insulation ensures reliable power transmission even in harsh environments.
Vaina principal (LS)
El Vaina principal (LS) is a continuous extruded metallic layer applied over the laid-up insulated cores.
Functions of Lead Sheath
- Excellent moisture barrier
- High resistance to oils, químicos, y sustancias corrosivas
- Protection against water ingress
- Enhanced electromagnetic shielding
Debido a estas propiedades, LS cables are widely used in underground, industrial, and chemically aggressive environments.
Armadura plana de acero (SFA)
El Armadura plana de acero (SFA) provides strong mechanical protection.
Ventajas:
- Alta resistencia al impacto y aplastamiento
- Adecuado para entierro directo
- Improved tensile strength
- Protección contra daños por roedores
SFA makes the cable suitable for heavy-duty installations where mechanical stress is expected.
PVC-FR Outer Sheath
The final layer is a Flame Retardant PVC (PVC-FR) funda exterior.
Functions:
- Flame retardancy
- UV resistance
- Protection against abrasion and weather
- Easy identification and installation
IEC Conductor Construction – 1 Núcleo a 5 Núcleos (0.5 mm² a 300 mm²)
IEC Conductor Structure Table (0.5–300 mm², 1C–5C)
| Sección transversal nominal (mm²) | Clase de conductor | No. de núcleos | Construcción de conductores (CEI 60228) |
|---|---|---|---|
| 0.5 | Clase 1 | 1–5 | – |
| 0.75 | Clase 1 | 1–5 | – |
| 1.0 | Clase 1 | 1–5 | – |
| 1.5 | Clase 2 | 1–5 | 7 × 0.52 mm |
| 2.5 | Clase 2 | 1–5 | 7 × 0.67 mm |
| 4 | Clase 2 | 1–5 | 7 × 0.85 mm |
| 6 | Clase 2 | 1–5 | 7 × 1.04 mm |
| 10 | Clase 2 | 1–5 | 7 × 1.35 mm |
| 16 | Clase 2 | 1–5 | 7 × 1.70 mm |
| 25 | Clase 2 | 1–5 | 7 × 2.14 mm |
| 35 | Clase 2 | 1–5 | 7 × 2.52 mm |
| 50 | Clase 2 | 1–5 | 19 × 1.78 mm |
| 70 | Clase 2 | 1–5 | 19 × 2.14 mm |
| 95 | Clase 2 | 1–5 | 19 × 2.52 mm |
| 120 | Clase 2 | 1–5 | 37 × 2.03 mm |
| 150 | Clase 2 | 1–5 | 37 × 2.25 mm |
| 185 | Clase 2 | 1–5 | 37 × 2.52 mm |
| 240 | Clase 2 | 1–5 | 61 × 2.25 mm |
| 300 | Clase 2 | 1–5 | 61 × 2.52 mm |
IEC Conductor Construction – 1 Núcleo a 36 Núcleos (0.5 mm² a 10 mm²)
IEC Multi-Core Conductor Structure Table (0.5–10 mm², 1C–36C)
| Sección transversal nominal (mm²) | Clase de conductor | No. de núcleos | Typical IEC Construction |
|---|---|---|---|
| 0.5 | Clase 1 | 1–36 | – |
| 0.75 | Clase 1 | 1–36 | – |
| 1.0 | Clase 1 | 1–36 | – |
| 1.5 | Clase 2 | 1–36 | 7 × 0.52 mm |
| 2.5 | Clase 2 | 1–36 | 7 × 0.67 mm |
| 4 | Clase 2 | 1–36 | 7 × 0.85 mm |
| 6 | Clase 2 | 1–36 | 7 × 1.04 mm |
| 10 | Clase 2 | 1–36 | 7 × 1.35 mm |
These configurations are widely used in cables de control, power distribution panels, emergency circuits, and instrumentation systems.
Applications
El CU/MGT/XLPE/LS/SFA/PVC-FR 0.6/1 (1.2) Cable FR de kV is suitable for:
- Centrales eléctricas y subestaciones
- Tunnels and metro systems
- Aceite & gas and petrochemical plants
- Industrial facilities
- Underground and direct burial installations
- Emergency and fire survival circuits
Ventajas clave
- Excellent fire resistance
- Fuerte protección mecánica
- Resistencia superior a la humedad y a los químicos
- Larga vida útil
- IEC-compliant conductor construction
- Suitable for harsh and critical environments
CU/MGT/XLPE/LS/SFA/PVC-FR 0.6/1 (1.2) Cable FR de kV
El CU/MGT/XLPE/LS/SFA/PVC-FR 0.6/1 (1.2) Cable FR de kV represents a robust and reliable solution for low-voltage power distribution where fire safety, resistencia mecánica, and environmental protection are critical. With a carefully engineered structure and standardized IEC conductor configurations, this cable meets the highest expectations of modern electrical and industrial projects.