Three and Half Core Armoured and Unarmoured (Aluminum)

Applicable standard

IS:7098 (Part-1)-2025, IEC:60502-1, IS:8130, IS:5831

Salient Features

3.5 core design with reduced neutral conductor
Cost-effective for unbalanced three-phase loads
Armoured for enhanced mechanical protection
Resistant to moisture, UV, and chemicals
Aluminium conductors for lighter weight and economy
Suitable for direct burial and underground duct systems

Technical Data

Voltage Grade1.1 kV (Up to and including)

Operating Temp+90°C (XLPE)

Nominal Voltage1.1 KV

Test Voltage3.5 KV

Core ColourRed, Yellow, Blue (Full) & Black (Half)

Construction

ConductorStranded Aluminium Class-2 as per IS 8130

InsulationXLPE (Cross-linked Polyethylene)

Inner SheathExtruded PVC or LD Tapping

ArmourGalvanized Steel Wire / Steel Strip Armour (Armoured Variant)

Outer SheathPVC (ST2) Extruded, Black Colour

PackingWooden Drums

Length100 Mtr, 200 Mtr, 500 Mtr

Application

Ideal for unbalanced three-phase systems where neutral current is significantly less than phase current. Commonly used in industrial plants, distribution networks, commercial complexes, and municipal lighting systems.

Complete Specification Data

650/1100 VOLTS WEIGHT & DIMENSIONS

Nominal Size of Conductor	Form of Conductor Circular Shaped	Nominal Thickness of XLPE Insulation Main / Neutral	Minimum Thickness of PVC Inner Sheath	Unarmoured Cable			Formed Wire / Strip Armoured Cable				Round Wire Armoured Cable				Current Rating.*		*Normal Delivery Length
Nominal Size of Conductor	Form of Conductor Circular Shaped	Nominal Thickness of XLPE Insulation Main / Neutral	Minimum Thickness of PVC Inner Sheath	Nominal Thickness of PVC Outer Sheath	Approx. Overall Diameter of Cable	Approx. Weight of Cable	Nominal Dimen- sion of GI Flat Strip	Minimum Thickness of PVC Outer Sheath	Approx. Overall Diameter of Cable	Approx. Weight of Cable	Nominal Dimen- sion of GI Round Strip	Minimum Thickness of PVC Outer Sheath	Approx. Overall Diameter of Cable	Approx. Weight of Cable	In Ground	In Air	*Normal Delivery Length
Sq.mm		mm / mm	mm	mm	mm	Kgs./Km	mm	mm	mm	Kgs./Km	mm	mm	mm	Kgs./Km	Amps.	Amps.	Mtrs.
25/16	Stranded	0.90 / 0.70	0.30	2	21.30	525	4 x 0.80	1.40	21.90	733	1.60	1.40	23.60	969	95	93	1000
35/16	Stranded	0.90 / 0.70	0.30	2	23.60	625	4 x 0.80	1.40	24.20	886	1.60	1.40	25.80	1139	114	114	1000
50/25	Stranded	1 / 0.90	0.30	2	26.80	800	4 x 0.80	1.40	27.40	1113	1.60	1.56	29.50	1387	134	138	1000
70/35	Stranded	1.10 / 0.90	0.40	2.20	31	1100	4 x 0.80	1.56	31.50	1451	2	1.56	34	1938	164	175	500
95/50	Stranded	1.10 / 1	0.40	2.20	34.30	1400	4 x 0.80	1.56	34.80	1796	2	1.56	37.20	2356	197	216	500
120/70	Stranded	1.20 / 1.10	0.40	2.20	37.50	1650	4 x 0.80	1.72	38.50	2199	2	1.72	41	2800	223	249	500
150/70	Stranded	1.40 / 1.10	0.50	2.40	41	2000	4 x 0.80	1.72	42	2579	2	1.88	45	3296	249	284	500
185/95	Stranded	1.60 / 1.10	0.50	2.60	46.50	2550	4 x 0.80	1.88	47.20	3156	2.50	2.04	50	4313	282	329	500
240/120	Stranded	1.70 / 1.20	0.60	2.80	52.50	3200	4 x 0.80	2.04	52.70	3913	2.50	2.20	56	5196	327	392	500
300/150	Stranded	1.80 / 1.40	0.60	3	56	4000	4 x 0.80	2.20	57	4693	2.50	2.36	61	6108	369	452	500
400/185	Stranded	2 / 1.60	0.70	3.40	64	5177	4 x 0.80	2.52	65	5890	3.15	2.68	70	8151	420	526	500
500/240	Stranded	2.20 / 1.70	0.70	3.60	72.50	6500	4 x 0.80	2.68	73.50	7400	3.15	2.84	77	9880	478	612	250

The above data is approximate and subject to manufacturing tolerance.

* Delivery Length tolerance is ±5%. Length more than normal as per customer request.