IEC/BS Standard 12.7/22kV XLPE Insulated MV Middle Voltage Power Cable

Suitable for energy networks such as power stations,distribution system etc. Used for installation in ducts, underground and outdoors.

The cables manufactured to BS6622 and BS7835 are generally supplied with Copper conductors with Class 2 rigid stranding. Single core cables have aluminium wire armoured (AWA) to prevent induced current in the armoured, whilst the multi-core cables have steel wire armoured (SWA) providing the mechanical protection. These are round wires with over 90% coverage.

Note: Red outer sheath can be prone to fading when exposed to UV rays.

Application

Suitable for energy networks such as power stations,distribution system etc. It usually used for installation in ducts, underground and outdoors.

Due to its robustness and high electrical stability, medium voltage cables are used in harsh environments.

Note: Red outer sheath can be prone to fading when exposed to UV rays.

Standards

Flame propagation to BS EN60332BS6622IEC 60502

Construction

Conductor: stranded plain annealed circular compacted copper conductors or aluminium conductor

Insulation: cross link polyethylene (XLPE)

Metallic Screen: individual or overall copper tape screen

Separator: copper tape with 10% overlap

Bedding: polyvinyl chloride (PVC)

Armoured: Steel Wire Armour (SWA), Steel Tape Armour (STA), Aluminium Wire Armour (AWA), Aluminium Tape Armour (ATA)

Sheath: PVC/PE outer sheath

Sheath colour: Red or Black

Electrical data

Conductor max operating temperature: 90°C

Screen max operating temperature: 80°C

Conductor max temperature during S.C: 250°C

Laying conditions at trefoil formation

Soil thermal resistivity: 120˚C. Cm/Watt

Burial depth: 0.5m

Ground temperature: 15°C

Air temperature: 25°C

Frequency: 50Hz

Data Sheet

12.7/22kV-Single core copper conductor xlpe/pe insulated copper tape screened aluminium wire armoured pvc/pe sheathed cables

Nominal area of conductor	Maximum conductor resistance at 20 ℃	Thickness of xlpe insulation	Thickness of copper tape	Thickness of extruded bedding	Dia. of armoured wire	Thickness of outer sheath	Approx. Overall	Approx. Cable weight
mm²	Ohm/km	mm	mm	mm	mm	mm	mm	kg/km
35	0.524	5.5	0.12	1.2	1.6	2	32.2	1360
50	0.387	5.5	0.12	1.2	1.6	2	33.3	1524
70	0.268	5.5	0.12	1.2	2	2.1	36	1896
95	0.193	5.5	0.12	1.2	2	2.2	38	2241
120	0.153	5.5	0.12	1.2	2	2.2	39.4	2534
150	0.124	5.5	0.12	1.2	2	2.3	41	2867
185	0.0991	5.5	0.12	1.2	2	2.3	42.6	3288
240	0.0754	5.5	0.12	1.3	2	2.4	45.2	3923
300	0.0601	5.5	0.12	1.3	2.5	2.5	48.58	4756
400	0.047	5.5	0.12	1.4	2.5	2.6	52	5739
500	0.0366	5.5	0.12	1.4	2.5	2.8	55.64	6928
630	0.0283	5.5	0.12	1.5	2.5	2.9	59.84	8487

12.7/22kV-Three cores copper conductor xlpe/pe insulated copper tape screened galvanized steel wire armoured pvc/pe sheathed cables

Nominal area of conductor	Maximum conductor resistance at 20 ℃	Thickness of xlpe insulation	Thickness of copper tape	Thickness of extruded bedding	Dia. of armoured wire	Thickness of outer sheath	Approx. Overall diameter	Approx. Cable weight
mm²	Ohm/km	mm	mm		mm	mm	mm	kg/km
35	0.524	5.5	0.075	1.5	2.5	2.7	57.4	4710
50	0.387	5.5	0.075	1.6	2.5	2.8	60.2	5130
70	0.268	5.5	0.075	1.6	2.5	2.9	64.2	5740
95	0.193	5.5	0.075	1.7	2.5	3.2	73.2	8870
120	0.153	5.5	0.075	1.7	3.15	3.3	78	10730
150	0.124	5.5	0.075	1.8	3.15	3.4	81.4	12000
185	0.0991	5.5	0.075	1.9	3.15	3.6	85.5	13460
240	0.0754	5.5	0.075	2	3.15	3.7	91.3	15780
300	0.0601	5.5	0.075	2	3.15	3.9	96	18110
400	0.047	5.5	0.075	2.2	3.15	4.1	103	21500