LV & MV Power Cables

Medium Voltage Cables to BS 6622BS 7835

Medium Voltage Cables to BS 6622/BS 7835

Standards: BS 6622/BS · BS7835 · BS6622

Product Description

Medium Voltage Cables to BS 6622/BS 7835

British Standard BS7835 specifies requirements for single-core and three-core armoured cables with thermosetting insulation – 3.8/6.6kV up to 19/33kV. They are designed to produce low levels of smoke and corrosive gases on exposure to fire compared to the cables specified in British Standard BS6622.

Medium Voltage Cables to BS 6622/BS 7835 Application

They are suitable for installation mostly in power supply stations, indoors and in cable ducts, outdoors, underground and in water as well as for installation on cable trays for industries, switchboards and power stations.

Medium Voltage Cables to BS 6622/BS 7835 Construction

Conductor	Stranded copper (Class 2), aluminium stranded (Class 2) or solid (class 1)
Insulation	Cross-linked Polyethylene (XLPE) Type GP8 or cross-linked Ethylene Propylene Rubber (EPR) Type GP7
Insulation screen	Extruded semi-conductive layer of cross-linkable polymer or combination of semi-conductive layer and semi-conductive tape
Screen	Metallic screening layer of copper wire or copper tape
Bedding	Low Smoke Zero Halogen (LSZH) compound
Armour	Metallic armour of aluminium or aluminium alloy for single-core cables and galvanised steel wire for three-core cables
Outersheath	Thermoplastic LSZH oversheath, Polyvinyl Chloride (PVC) compound or medium density Polyethylene (MDPE)

Medium Voltage Cables to BS 6622/BS 7835 Nominal /Operating /Test Voltages

Rated Voltage Uo/U	Operating Voltage (Um)	Testing Voltage (rms)
3.8/6.6KV	7.2KV	15KV
6.35/11KV	12KV	25.5KV
8.7/15KV	17.5KV	35KV
12.7/22KV	24KV	51KV
19/33KV	36KV	76KV

Medium Voltage Cables to BS 6622/BS 7835 Single Core 3.8/6.6KV (Um=7.2KV)

Dimensional Data

Nom. Cross-Section Area		Unarmoured Cables					Aluminium Wire Armoured Cables
	Nom. Insulation Thickness	Copper Wire Screen Area	Nom. Sheath Thickness	Approx. Overall Diameter	Approx. Weight		Copper Tape Screen Area	Nom. Bedding Thickness	Nom. Armour Wire Diameter	Nom. Sheath Thickness	Approx. Overall Diameter	Approx. Weight
					Approx. Weight							CU	AL
					CU	AL						CU	AL
mm^2	mm	mm^2	mm	mm	kg/km		mm^2	mm	mm	mm	mm	kg/km
25	2.5	16	1.5	20.3	750	580	3.4	1.2	1.6	1.8	26.3	1150	1000
35	2.5	16	1.6	21.3	870	650	3.6	1.2	1.6	1.8	27.3	1250	1050
50	2.5	16	1.6	22.4	1090	770	3.9	1.2	1.6	1.8	28.4	1500	1190
70	2.5	16	1.7	24.2	1310	870	4.3	1.2	1.6	1.8	30.0	1740	1300
95	2.5	16	1.7	25.8	1560	960	4.7	1.2	1.6	1.9	31.8	2030	1430
120	2.5	16	1.8	27.4	1830	1070	5.0	1.2	1.6	1.9	33.2	2310	1550
150	2.5	25	1.8	29.1	2130	1190	5.3	1.2	1.6	2.0	35.1	2660	1720
185	2.5	25	1.9	30.8	2490	1320	5.8	1.2	2.0	2.0	37.4	3120	1950
240	2.6	25	1.9	33.5	3040	1520	6.3	1.2	2.0	2.1	40.3	3740	2200
300	2.8	25	2.0	36.1	3650	1770	7.0	1.2	2.0	2.2	42.9	4400	2520
400	3.0	35	2.2	40.6	4680	2170	7.7	1.2	2.0	2.3	47.2	5490	2960
500	3.2	35	2.3	43.6	5670	2570	8.5	1.3	2.5	2.5	51.6	6760	3660
630	3.2	35	2.4	48.8	6980	2990	9.5	1.4	2.5	2.6	57.0	8200	4160

Medium Voltage Cables to BS 6622/BS 7835 Three Core 3.8/6.6KV (Um=7.2KV)

Dimensional Data

Nom. Cross-Section Area		Unarmoured Cables					Steel Wire Armoured Cables
	Nom. Insulation Thickness	Copper Wire Screen Area	Nom. Sheath Thickness	Approx. Overall Diameter	Approx. Weight		Copper Tape Screen Area	Nom. Bedding Thickness	Nom. Armour Wire Diameter	Nom. Sheath Thickness	Approx. Overall Diameter	Approx. Weight
					Approx. Weight							CU	AL
					CU	AL						CU	AL
mm^2	mm	mm^2	mm	mm	kg/km		mm^2	mm	mm	mm	mm	kg/km
25	2.5	16	2.1	37.7	2205	1740	3.4	1.2	2.0	2.2	44.5	3890	3465
35	2.5	16	2.3	41.2	2690	2010	3.6	1.2	2.5	2.3	46.8	4420	3730
50	2.5	16	2.5	44.9	3340	2350	3.8	1.3	2.5	2.5	51.5	5640	4690
70	2.5	16	2.6	48.0	4050	2730	4.3	1.3	2.5	2.6	55.0	6570	5240
95	2.5	16	2.7	51.7	5000	3180	4.7	1.4	2.5	2.7	58.9	7760	5890
120	2.5	16	2.8	54.7	5890	3590	5.0	1.5	2.5	2.8	62.1	8810	6510
150	2.5	25	2.9	58.4	6960	4160	5.3	1.5	2.5	2.9	65.8	10110	7310
185	2.5	25	3.0	61.9	8160	4650	5.8	1.6	2.5	3.0	69.5	11520	7960
240	2.6	25	3.2	68.1	10210	5530	6.3	1.7	2.5	3.2	75.9	13920	9140
300	2.8	25	3.5	73.6	12380	6670	7.0	1.8	3.15	3.5	83.1	17400	11620
400	3.0	35	3.7	83.8	16190	8430	7.7	2.0	3.15	3.7	93.0	21900	13980

Applicable Standards

BS 6622/BSBS7835BS6622

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**Low Voltage Directive Attestation (EU)**

Type and routine tests are issued from our own testing centre under the ISO 9001 quality system — test reports and certificates accompany every shipment.

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Contact personChloe · Export Department
Factory addressWest Industrial Park, Zhulin Town, Gongyi City, Henan Province, China