Введение
The CU/MGT/XLPE/LS/SFA/PVC-FR 0.6/1 (1.2) kV FR Cable is a high-performance, fire-resistant, armoured low-voltage power cable designed for critical power distribution systems. This cable combines electrical reliability, fire survival capability, mechanical protection, and environmental resistance, making it suitable for demanding industrial and infrastructure applications.
With a construction consisting of Copper Conductor (КУ), Mica Glass Tape (MGT), Изоляция из сшитого полиэтилена, Свинцовая оболочка (LS), Steel Flat Armour (SFA), and a Flame Retardant PVC outer sheath, this cable is engineered to maintain circuit integrity even under severe fire and mechanical stress conditions.
The rated voltage of 0.6/1 (1.2) кВ makes it ideal for low-voltage power transmission where безопасность, долговечность, и долгой срок службы are mandatory.
Meaning of CU/MGT/XLPE/LS/SFA/PVC-FR
The designation CU/MGT/XLPE/LS/SFA/PVC-FR 0.6/1 (1.2) кВ 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, химический, 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 underground installations, туннели, power plants, масло & gas facilities, refineries, подстанции, and emergency power circuits.
General Cable Construction
Типичный CU/MGT/XLPE/LS/SFA/PVC-FR 0.6/1 (1.2) kV FR Cable consists of the following layers:
- Copper conductor (МЭК 60228)
- Mica glass tape fire barrier
- Изоляция из сшитого полиэтилена
- Laid-up cores with fillers (for multi-core cables)
- Свинцовая оболочка (LS)
- PVC separator / bedding
- Steel flat armour (SFA)
- Flame retardant PVC outer sheath (PVC-FR)
Each layer serves a specific electrical, термический, механический, or protective function.
Copper Conductor (КУ)
The conductor is made of annealed electrolytic copper with high conductivity and excellent mechanical strength. Conductors are manufactured in accordance with МЭК 60228, typically as:
- Сорт 1 – Solid conductor (mainly for small cross-sections)
- Сорт 2 – Stranded conductor (most common for power cables)
Copper conductors ensure:
- Low conductor resistance
- High current-carrying capacity
- Excellent thermal stability
- Long service life
Mica Glass Tape (MGT) – Fire Resistance Layer
The mica glass tape layer is the key component that gives the cable its fire-resistant (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.
Изоляция из сшитого полиэтилена
Изоляция из сшитого полиэтилена is applied over the conductor or MGT layer.
Key advantages:
- Rated operating temperature: 90°С
- Short-circuit temperature: 250°С
- High dielectric strength
- Excellent resistance to moisture, химикаты, and aging
XLPE insulation ensures reliable power transmission even in harsh environments.
Свинцовая оболочка (LS)
The Свинцовая оболочка (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, химикаты, and corrosive substances
- Protection against water ingress
- Enhanced electromagnetic shielding
Because of these properties, LS cables are widely used in underground, промышленный, and chemically aggressive environments.
Steel Flat Armour (SFA)
The Steel Flat Armour (SFA) provides strong mechanical protection.
Преимущества:
- High resistance to impact and crushing
- Suitable for direct burial
- Improved tensile strength
- Protection against rodent damage
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) внешняя оболочка.
Functions:
- Flame retardancy
- UV resistance
- Protection against abrasion and weather
- Easy identification and installation
IEC Conductor Construction – 1 Core to 5 Cores (0.5 мм² до 300 мм²)
IEC Conductor Structure Table (0.5–300 mm², 1C–5C)
| Nominal Cross Section (мм²) | Conductor Class | Нет. of Cores | Конструкция проводника (МЭК 60228) |
|---|---|---|---|
| 0.5 | Сорт 1 | 1–5 | – |
| 0.75 | Сорт 1 | 1–5 | – |
| 1.0 | Сорт 1 | 1–5 | – |
| 1.5 | Сорт 2 | 1–5 | 7 × 0.52 мм |
| 2.5 | Сорт 2 | 1–5 | 7 × 0.67 мм |
| 4 | Сорт 2 | 1–5 | 7 × 0.85 мм |
| 6 | Сорт 2 | 1–5 | 7 × 1.04 мм |
| 10 | Сорт 2 | 1–5 | 7 × 1.35 мм |
| 16 | Сорт 2 | 1–5 | 7 × 1.70 мм |
| 25 | Сорт 2 | 1–5 | 7 × 2.14 мм |
| 35 | Сорт 2 | 1–5 | 7 × 2.52 мм |
| 50 | Сорт 2 | 1–5 | 19 × 1.78 мм |
| 70 | Сорт 2 | 1–5 | 19 × 2.14 мм |
| 95 | Сорт 2 | 1–5 | 19 × 2.52 мм |
| 120 | Сорт 2 | 1–5 | 37 × 2.03 мм |
| 150 | Сорт 2 | 1–5 | 37 × 2.25 мм |
| 185 | Сорт 2 | 1–5 | 37 × 2.52 мм |
| 240 | Сорт 2 | 1–5 | 61 × 2.25 мм |
| 300 | Сорт 2 | 1–5 | 61 × 2.52 мм |
IEC Conductor Construction – 1 Core to 36 Cores (0.5 мм² до 10 мм²)
IEC Multi-Core Conductor Structure Table (0.5–10 mm², 1C–36C)
| Nominal Cross Section (мм²) | Conductor Class | Нет. of Cores | Typical IEC Construction |
|---|---|---|---|
| 0.5 | Сорт 1 | 1–36 | – |
| 0.75 | Сорт 1 | 1–36 | – |
| 1.0 | Сорт 1 | 1–36 | – |
| 1.5 | Сорт 2 | 1–36 | 7 × 0.52 мм |
| 2.5 | Сорт 2 | 1–36 | 7 × 0.67 мм |
| 4 | Сорт 2 | 1–36 | 7 × 0.85 мм |
| 6 | Сорт 2 | 1–36 | 7 × 1.04 мм |
| 10 | Сорт 2 | 1–36 | 7 × 1.35 мм |
These configurations are widely used in управляющие кабели, power distribution panels, emergency circuits, and instrumentation systems.
Приложения
The CU/MGT/XLPE/LS/SFA/PVC-FR 0.6/1 (1.2) kV FR Cable is suitable for:
- Электростанции и подстанции
- Tunnels and metro systems
- Oil & gas and petrochemical plants
- Industrial facilities
- Underground and direct burial installations
- Emergency and fire survival circuits
Key Advantages
- Excellent fire resistance
- Сильная механическая защита
- Superior moisture and chemical resistance
- Long service life
- IEC-compliant conductor construction
- Suitable for harsh and critical environments
CU/MGT/XLPE/LS/SFA/PVC-FR 0.6/1 (1.2) kV FR Cable
The CU/MGT/XLPE/LS/SFA/PVC-FR 0.6/1 (1.2) kV FR Cable represents a robust and reliable solution for low-voltage power distribution where пожарная безопасность, механическая прочность, 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.