BS 6622 Single Core Armoured 11kV XLPE Stranded Copper Conductors

BS 6622 Single Core Armoured 11kV XLPE Stranded Aluminium Conductors

Construction

cross-sectional area mmsq	Minimum average thickness of insulation mm	Nominal diameter over insulation mm	Nominal thickness of PVC bedding mm	Nominal number and diameter of armoured wires no./mm	Nominal thickness of PVC oversheath mm	Nominal overall diameter of cable mm
70	3.4	18.8	1.2	42/1.6	1.9	29.7
95	3.4	20.5	1.2	45/1.6	1.9	31.4
120	3.4	22.0	1.2	47/1.6	2.0	33.1
150	3.4	23.3	1.2	40/2.0	2.1	35.4
185	3.4	25.1	1.2	43/2.0	2.1	37.2
240	3.4	27.3	1.2	46/2.0	2.2	39.8
300	3.4	29.6	1.2	49/2.0	2.3	42.3
400	3.4	32.3	1.2	53/2.0	2.4	45.2
500	3.4	35.2	1.3	46/2.5	2.5	49.5
630	3.4	38.6	1.4	50/2.5	2.6	53.3

Installation

cross-sectional area mmsq	Approximate cable weight kg/m	Nominal drum length m	Minimum bending radius mm	Nominal internal diameter of ducts mm
70	1.1	1000	450	100
95	1.3	1000	500	100
120	1.4	500	500	100
150	1.7	500	550	100
185	1.9	500	600	100
240	2.1	500	600	100
300	2.4	500	650	100
400	2.8	300	700	100
500	3.5	300	750	100
630	4.1	300	800	100

Electrical Performance

cross-sectional area mmsq	Maximum DC resistance of conductor at 20 ℃ uohms/m	Maximum AC resistance of conductor at 90 ℃ uohms/m	Reactance at 50Hz uohms/m	Impedance at 50Hz uohms/m	Maximum Capacitace PF/m	Maximum charging current at normal voltage and frequency mA/m
70	443	568	130	583	288	0.58
95	320	410	123	428	323	0.65
120	253	325	118	346	353	0.71
150	206	265	117	291	380	0.76
185	164	211	112	240	416	0.83
240	125	161	109	195	460	0.92
300	100	130	105	168	506	1.01
400	77.8	102	101	144	561	1.12
500	60.5	81	99.8	129	619	1.24
630	46.9	64	96.1	116	698	1.37

Ratings

Cross-sectional area mmsq	Current Ratings			Short circuit ratings
Cross-sectional area mmsq	Laid direct in ground Amps	Drawn into ducts Amps	Laid in air Amps	One second short circuit rating of conductor KA	One second short circuit rating of copper per core KA
70	210	210	240	6.3	Typically less then 1kA
95	250	245	295	8.5
120	280	275	335	11.0
150	315	300	380	13.5
185	355	335	435	17.0
240	405	380	510	22.3
300	455	420	580	28.0
400	510	455	670	36.6
500	570	500	770	46.2
630	640	550	880	58.3