N2ХBY
- N2ХBY are power armoured cables with copper conductors, insulation mage of cross-linked polyethylene (XLPE) and protective coating.
- They are designed for the transmission and distribution of the electrical energy in stationary installations for a rated alternating voltage of 0.66; 1 kV, with a frequency of 50 Hz.
- They are used for laying in the earth trenches, rooms, tunnels, channels and partially flooded structures with various corrosive conditions, as well as outdoors, if the cable is not subjected to significant tension strain, but if there is a risk of mechanical damage during operation.
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Multi-conductor cable: 7.5 x outer diameter
operation: from -50°С to +50°С
| Conductors: : copper single-wire or multi-wire of the 1st or 2d flexibility class, of round or sector shape (class 1, 2 DSTU EN 60228) |
| Insulation: conductor insulation – cross-linked polyethylene, hose-type sheath made of PVC compound |
| Armor: galvanized steel bands |
| Rated voltage, kV | ||
|---|---|---|
| 0,66 | 1 | |
| Number of conductors | Nominal cross-section area of the key conductors, mm2 | |
| 1 | 10 — 50 | 10 — 240 |
| 2, 3, 4, 5 | 2,5 — 50 | 2,5 — 240 |
N2ХBY is a power armoured cable with copper conductors, insulation made of cross-linked polyethylene (XLPE) and a BbSHv-type protective coating. It is designed for the transmission and distribution of electrical energy in stationary installations for a rated alternating voltage of 0.66; 1 kV with a frequency of 50 Hz.
Applicability scope
N2ХBY is actively used in areas with temperate and cold climates, on land, in rivers and lakes, outdoors and indoors. It is designed for stationary single electrical networks. It is used for laying in trenches, including in places where the soil is chemically active in relation to metal, regardless of the presence of leakage currents and the level of groundwater. It can be laid in swampy areas and salt marshes. It is also used for external wiring, installation in dry and damp rooms, collectors, ducts, cable cellars, mines and partially flooded rooms with various corrosive conditions. It is suitable for laying cable routes through the air with an unlimited level difference without significant tension strain in respect of the cable, but if there is a risk of mechanical damage during operation.
The cable is resistant to cracking, chemical attack, and mechanical damage. It demonstrates low moisture absorption. It is eco-friendly, lead, oil, bitumen free. And its installation does not require special equipment.
In places with a high probability of fire and increased fire safety requirements, N2ХBY cables are commonly used since they are made of non-combustible materials.
Design
The main structural element of the cable is a copper conductor. They can be single-wire or multi-wire, round or sector shape, 1st or 2d flexibility classes (class 1, 2 DSTU EN 60228). The conductors are stranded into a core and insulated with silanol-crosslinked polyethylene. To give the cable a round shape, it is allowed to fill the spaces between the insulated conductors. The BbSHv-type protective coating is designed as a winding of two galvanized steel bands and a protective hose extruded from PVC compound.
Operation
N2ХBY cables are designed for stationary operation. The operating temperature ranges from -50°С to +50°С. And when a relative humidity is up to 98% the temperature must not be higher than +35°С, including for laying outdoors. The installation is carried out at a temperature not lower than -15°С; at lower temperatures, it is necessary to preheat the cable.
The minimum bending radius during installation must be at least 7.5 outer cable diameters for multi-conductors cables and 10 outer cable diameters for single-conductor cables.
The insulation made of silanol-crosslinked polyethylene allowed to increase the permissible conductor heating temperature during operation to 90°C. In an emergency mode, the cable can withstand up to 130°C, and at short-circuit currents up to 250°C. This, in turn, provided N2ХBY with greater conductivity and reliability during operation.
The service life of the cables is at least 30 years. The guaranteed service life is 5 years.
The website of EUROPAN LLC presents an armoured cable N2ХBY of various label sizes of high quality, that is evidenced by certificates of conformity. You can also buy NA2XBY cable, an aluminum analog of NA2XBY. As a direct manufacturer, we provide our customers with the lowest prices and favorable terms of delivery. And our managers will help you select the best conductor and advise you on all issues related to products, order conditions and delivery.
Permissible short circuit currents of cables
|
Nominal conductor cross-section, mm² |
Permissible current of one-second short circuit of cables, kA |
Nominal conductor cross-section, mm² |
Permissible current of one-second short circuit of cables, kA |
| 2,5 | 0,34 | 50 | 6,50 |
| 4,0 | 0,54 | 70 | 9,38 |
| 6,0 | 0,81 | 95 | 13,03 |
| 10 | 1,36 | 120 | 16,43 |
| 16 | 2,16 | 150 | 20,26 |
| 25 | 3,46 | 185 | 25,35 |
| 35 | 4,80 | 240 | 33,32 |
