NA2XS(চ)2এবং তারের is a single-core medium-voltage power cable with a stranded aluminium conductor, screened XLPE insulation, copper wire screen and black PE outer sheath. দ (চ) construction includes longitudinal water-blocking components in the screen area.
Fixed distribution feeders, substations and industrial power routes use this cable type where the installation design calls for an aluminium conductor and a water-blocked screened core. কন্ডাক্টরের আকার, পর্দা এলাকা, voltage and route conditions define the final configuration.
নির্মাণ
- কন্ডাক্টর
- Stranded aluminium, ক্লাস 2
- নিরোধক
- XLPE with inner and outer semiconductive screens
- ধাতব পর্দা
- Copper wires with cross-connection tape; swellable components
- বাইরের খাপ
- Black polyethylene; unarmoured reference design
বৈশিষ্ট্য
- Reference voltage
- 12/20 (24) কেভি
- Water blocking
- Longitudinal water blocking in the screen region; no separate radial moisture barrier
- ইনস্টলেশন
- Fixed underground, duct and industrial feeder routes
- Standard context
- DIN VDE 0276-620 / এইচডি 620; project-specific IEC requirements
NA2XS(চ)2Y for Fixed Power Distribution
ভোল্টেজ, conductor/screen size and route conditions define the project configuration.
NA2XS(চ)2Y কেবল প্রযুক্তিগত ডেটা
Recommended reference data. Final dimensions and ratings follow the approved project configuration; the selected rows are not a confirmed XWA production range.
| তারের আকার (মিমি²) | ডিসি প্রতিরোধ 20°সে (Ω/কিমি) | নিরোধক (মিমি) | প্রায়. অফ (মিমি) | প্রায়. ভর (কেজি/কিমি) | Air (ক) | Ground (ক) |
|---|---|---|---|---|---|---|
| 1 x 95/16 | 0.320 | 5.5 | 32 | 991 | 280 | 251 |
| 1 x 150/25 | 0.206 | 5.5 | 35 | 1284 | 366 | 319 |
| 1 x 240/25 | 0.125 | 5.5 | 39 | 1661 | 496 | 417 |
| 1 x 300/25 | 0.100 | 5.5 | 41 | 1871 | 569 | 471 |
| 1 x 400/35 | 0.0778 | 5.5 | 44 | 2324 | 660 | 535 |
| 1 x 630/35 | 0.0469 | 5.5 | 51 | 3202 | 883 | 705 |
Single-core aluminium/XLPE/copper-wire-screen/PE, 12/20(24) কেভি. The second area in 1×240/25 identifies the metallic screen, not another phase conductor.
Reference ampacity: one circuit, touching trefoil; air 30°C; ground 20°C, thermal resistivity 1.0 K·m/W and burial depth 0.7 মি. Reference maximum conductor temperature: 90°সে. নালী, grouped circuits and bonding require a project calculation.
Longitudinal water blocking and three single-core circuits
Swellable components limit water movement along the cable after moisture enters. They do not repair sheath damage or establish a separate radial moisture barrier. Water-blocked conductors, radial barriers and immersion conditions require their own construction and evidence.
স্বরলিপি 3×1×240 describes three individually sheathed single-core cables, each with a 240 mm² conductor. It is not a three-core assembly. Drum allocation, ক্লিটস, cable entries and screen connections follow that distinction.
Applications and Installation Conditions
Utility distribution, transformer-substation connections and industrial feeders are typical fixed-installation contexts. যান্ত্রিক সুরক্ষা, তাপ নকশা, end sealing and aluminium-compatible connections remain part of the cable system. Ordinary PE sheath is not a substitute for a specified flame-retardant or LSZH design.
প্রতিরোধ, partial-discharge and voltage-test records do not replace evidence for longitudinal water penetration or sheath integrity. The declared water-blocking construction and its test scope must agree. The official IEC scope provides standard context, not a VDE certificate or utility approval.
NA2XS(চ)2Y and Related Constructions
| মডেল | Main difference |
|---|---|
| NA2XSY cable | Aluminium conductor and PVC outer sheath instead of PE; longitudinal water blocking is not specified by the NA2XSY designation. |
| N2XS2Y cable | Copper conductor instead of aluminium, with XLPE insulation and a PE sheath; longitudinal water blocking is not specified by the N2XS2Y designation. |
| NA2XS(FL)2Y | Adds a laminated metallic moisture barrier beneath the PE sheath, providing radial moisture protection in addition to longitudinal water blocking. |
NA2XS(চ)2Y কেবল FAQs
কি করে (চ) mean in NA2XS(চ)2Y?
It identifies longitudinal water blocking. The exact tape arrangement and tested scope follow the declared construction; it does not by itself specify a radial barrier or a water-blocked conductor.
Does an aluminium conductor mean an aluminium screen?
না. The reference uses an aluminium phase conductor and a copper wire metallic screen. Screen area follows earth-fault duty and bonding requirements.
Is 3×1×240 the same as a three-core cable?
না. It is three separate single-core cables. A three-core cable contains the three phase cores inside one common sheath.
Related: মাঝারি ভোল্টেজ তারের · তারের প্রকার এবং মডেল
Underground MV cable route conditions
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