NA2XS2Y Cable

NA2XS2Y 12/20 kV referentni podaci

Preporučeni referentni podaci: jedna objavljena aluminijumska jednožilna konstrukcija. Odabrane vrijednosti podržavaju preliminarno planiranje; konačne dimenzije isporuke i ocjene slijede odobrenu XWA specifikaciju i proračun projekta.

Referentna instalacija: jedno kolo, dodirujući trolist, ekrani uzemljeni na oba kraja; vazduh 30°C bez direktnog sunca; tlo 20°C, dubina 0.7 m, toplotna otpornost 1.0 K·m/W mokro i 2.5 K·m/W suvo; nema obližnjih izvora toplote. Maksimalna referentna temperatura provodnika: 90°C.

Referenca koristi 5.5 mm nominalne izolacije. Debljina PE omotača je 2.5 mm kroz navedene 500 mm² veličina, 2.6 mm at 630 mm² i 2.8 mm at 1000 mm². Sve dimenzije i masa su zavisne od konstrukcije.

Veličina faze, Površina ekrana i kompletna masa kabla

U 1×240/25, 240 mm² identifikuje aluminijumski fazni provodnik i 25 mm² odvojeni metalni ekran. Područje ekrana je odabrano za uzemljenje i spajanje.

Za odabrane 240/25 referenca, prečnik je približno 39 mm i mase 1.671 kg/m. A 500 m dužine sadrži približno 835.5 kg gotovog kabla; bubanj i masa za pakovanje se dodaju za otpremu.

Prelazak sa bakra na aluminijum utiče na veličinu vodiča, trenutni rejting, pad napona i izbor konektora. Gotovi promjer također određuje ulazni prostor i zahtjeve za rukovanje.

Aluminijski priključci i bakreni ekran

Aluminijski provodnik nosi faznu struju unutar izolacije. Bakarni ekran se nalazi izvan poluprovodničkog izolacionog ekrana, sa posebnim priključkom na kraju kabla.

Lugs and connectors are selected for the aluminium conductor form and size. A copper equipment connection uses a compatible transition system, with preparation, tools and crimping or tightening procedures specified by the connector manufacturer.

Termination kits also have an insulation-diameter range. A kit selected only from conductor area can miss that range. Za odabrane 240/25 izgradnja, the reference insulation diameter is approximately 30.4 mm; it is different from the 39 mm overall diameter used for the outer cable entry.

PE, PVC and Water-Blocked Alternatives

The PE sheath provides outer protection. Dedicated water-blocking layers and mechanical armour are additional construction options for routes that require them.

PE is halogen-free, while low-smoke and flame-retardant performance require the specified material system and tests. Building and tunnel routes follow their applicable fire-performance requirements.

Underground Routes and Fixed Distribution

NA2XS2Y is used in fixed underground networks, kanali, cable-management systems and industrial distribution where its declared sheath and installation requirements fit the route. Ground conditions determine whether direct burial is appropriate; rock, uticaj, excavation exposure or concentrated loads can require additional protection.

Flat or trefoil formation, razmak, neighbouring circuits and screen bonding determine circuit losses and thermal conditions. The table uses the stated reference arrangement; duct banks and other layouts use the applicable current-rating calculation.

Pulling loads and bending limits follow the actual cable geometry, pulling method and accessory requirements. See Radijus savijanja SN kabla i vučna napetost for the route-planning relationships.

Manufacturing Definition and Test Scope

The manufacturing definition identifies conductor material and form, insulation and sheath dimensions, the metallic-screen arrangement, voltage designation and applicable tests. The relevant schedule covers resistance, insulation and discharge performance, as well as the oversheath requirements of the agreed design.

The official publication scope opisuje okvir fiksnog distributivnog kabla. The project specification identifies applicable HD/VDE or IEC requirements, tests and any required product approvals.