Specifications
| Item | Details |
|---|---|
| Brand | Polycab |
| Polycab product code | LVIS09CXSFY23.5C400SA001S |
| Polycab type | 2XFY |
| Cores × size | 3.5 × 400 sq mm (three full cores and a reduced neutral) |
| Conductor | Stranded plain compacted sector shaped copper conductor as per IS 8130, class 2 |
| Insulation | Insulated with Cross Linked Polyethylene (XLPE) to IS 7098-1; 2/1.6 mm nominal |
| Inner sheath | Extruded inner sheath with PVC Type ST2/FRLS/FR/LSZH |
| Armour | Armoured with Galvanised Flat Steel Strip to IS 3975; 4x0.8 mm strip |
| Outer sheath | Sheathed with Extruded PVC Type ST2/FRLS/FR/LSZH; minimum 2.52 mm |
| Overall diameter | about 65.5 mm |
| Weight | about 13556 kg/km (about 1355.6 kg per 100 m) |
| Voltage | 650/1100 V |
| Temperature | Max.: 90°C; short circuit temperature 250°c |
| Bending radius | Fixed installation 12 x Overall diameter (about 786 mm fixed) |
| Core colours | Red, Yellow, Blue and Black |
| Standards | IS 8130:2013, IS 5831:1984, IS 3975:1979, IS 7098-1:1988 |
| Datasheet | Polycab product specification (PDF) |
Also known as: 3.5C x 400 sqmm, 3.5 x 400 mm², 3.5Cx400, 2XFY 3.5x400, 3.5 core 400 mm copper cable, 400 sqmm 3.5 core armoured cable, copper armored cable, XLPE power cable, LT cable 1.1 kV, 3½ core 400 sq mm, 3.5C x 400
Current rating
| How it is laid | Current rating |
|---|---|
| Buried direct in the ground | 528 A |
| In a single-way duct | 447 A |
| In air | 662 A |
From Polycab's specification (IS 3961-6): air 40 °C, ground 30 °C, conductor 90 °C. Derate for hotter locations, grouped cables and long runs; your electrician makes the final choice.
Other sizes in this cable
| Size | Overall dia. (mm) | Weight (kg/km) | Rating |
|---|---|---|---|
| 25 sq mm | 21.9 | 1272 | 119 A |
| 35 sq mm | 24.2 | 1586 | 147 A |
| 50 sq mm | 27.4 | 2061 | 179 A |
| 70 sq mm | 31.5 | 2831 | 226 A |
| 95 sq mm | 34.8 | 3686 | 279 A |
| 120 sq mm | 38.5 | 4617 | 320 A |
| 150 sq mm | 42.7 | 5481 | 365 A |
| 185 sq mm | 47.2 | 6830 | 422 A |
| 240 sq mm | 52.7 | 8711 | 500 A |
| 300 sq mm | 57.9 | 10716 | 574 A |
| 400 sq mm | 65.5 | 13556 | 662 A |
400 sq mm in other cores
Also available as
- 3.5 core 400 sq mm, Copper armoured (2XWY)
- 3.5 core 400 sq mm, Aluminium strip armoured (A2XFY)
- 3.5 core 400 sq mm, Aluminium armoured (A2XWY)
- 3.5 core 400 sq mm, Copper unarmoured (2XY)
- 3.5 core 400 sq mm, Aluminium unarmoured (A2XY)
Uses
Strip-armoured XLPE cable for larger feeders that are buried, outdoors or exposed to damage. Three phase cores and a reduced neutral, for balanced three-phase feeders. Typical uses: feeders, motor and pump supplies, and buried, outdoor or exposed runs.
Not sure between armoured and unarmoured? See armoured vs unarmoured cable.
How to order
Add this cable to your quote list, or send the product code and length on WhatsApp. We confirm availability, rate and dispatch, with a GST invoice, and deliver across India.