Keystone Cable / Low Voltage Cables

APPLICATION	This cable is mainly used in power stations, mass transit underground passenger systems, airports, petrochemical plants, hotels, hospitals, and high-rise buildings.
VOLTAGE RATING	600/1000V
CONSTRUCTION	Plain annealed copper, XLPE or XLEVA compound insulated, unarmoured or galvanized steel wires armoured, LSZH compound sheathed cable
INSULATION COLOUR	2-Core: (Brown & Blue) 3-Core: (Brown, Black & Grey) 4-Core: (Brown, Black, Grey & Blue) or as per order:
SHEATH COLOUR	Black or as per order
SPECIFICATION	Refer BS6724, IEC60502-1, IEC60332-1, IEC60332-3, IEC60754, IEC61034

Detailed Specification

2-CORE
Conductor		Insulation	Unarmoured Cable		Armoured Cable
Nominal Area	No./Dia of Strand	Thickness	Cable Overall Diameter	Approx. Weight	Cable Overall Diameter	Approx. Weight
mm²	No./mm	mm	mm	kg/km	mm	kg/km
1.5	7/0.53	0.7	10.0	130	14.5	325
2.5	7/0.67	0.7	11.0	165	15.5	400
4	7/0.85	0.7	12.0	215	16.5	475
6	7/1.04	0.7	13.0	270	18.0	570
10	7/1.35	0.7	15.0	390	20.0	710
16	7/1.70	0.7	17.0	550	22.0	1040
25	7/2.14	0.9	20.4	670	26.0	1350
35 (s)	19/1.53	0.9	22.7	880	23.5	1510

(s) : Sector Shaped Stranded Conductors

3-CORE
Conductor		Insulation	Unarmoured Cable		Armoured Cable
Nominal Area	No./Dia of Strand	Thickness	Cable Overall Diameter	Approx. Weight	Cable Overall Diameter	Approx. Weight
mm²	No./mm	mm	mm	kg/km	mm	kg/km
1.5	7/0.53	0.7	10.5	150	15.0	375
2.5	7/0.67	0.7	11.4	195	16.0	400
4	7/0.85	0.7	12.5	260	17.0	520
6	7/1.04	0.7	14.0	320	18.0	640
10	7/1.35	0.7	16.0	470	20.0	860
16	7/1.70	0.7	18.0	680	23.0	1220
25 (s)	12/1.70	0.9	19.8	950	24.8	1630
35 (s)	19/1.53	0.9	21.5	1260	26.5	2050
50 (s)	19/1.78	1.0	25.5	1670	30.5	2590
70 (s)	19/.2.14	1.1	29.0	2340	35.8	3600
95 (s)	19/2.52	1.1	32.0	3150	38.5	4590
120 (s)	37/2.03	1.2	35.7	3930	42.5	5560
150 (s)	37/2.25	1.4	40.5	4830	47.5	6920
185 (s)	37/2.52	1.6	45.0	6050	52.0	8530
240 (s)	61/2.25	1.7	53.5	8080	61.0	10900
300 (s)	61/2.52	1.8	60.0	10070	68.0	13225
400 (s)	61/2.85	2.0	65.5	12770	73.0	16200

(s) : Sector Shaped Stranded Conductors

4-CORE
Conductor		Insulation	Unarmoured Cable		Armoured Cable
Nominal Area	No./Dia of Strand	Thickness	Cable Overall Diameter	Approx. Weight	Cable Overall Diameter	Approx. Weight
mm²	No./mm	mm	mm	kg/km	mm	kg/km
1.5	7/0.53	0.7	11.5	180	15.5	410
2.5	7/0.67	0.7	12.5	230	16.5	495
4	7/0.85	0.7	14.0	315	18.0	610
6	7/1.04	0.7	15.5	395	20.0	810
10	1/1.35	0.7	17.5	590	22.7	1120
16	7/1.70	0.7	20.0	860	26.0	1480
25 (s)	12/1.70	0.9	21.5	1225	27.0	1980
35 (s)	19/1.53	0.9	25.0	1625	30.4	2480
50 (s)	19/1.78	1.0	28.0	2200	33.0	3180
70 (s)	19/2.14	1.1	32.0	3050	38.5	4500
95 (s)	19/2.52	1.1	37.0	4110	43.0	5775
120 (s)	37/2.03	1.2	42.0	5915	49.0	7450
150 (s)	37/2.25	1.4	46.0	6350	53.0	8830
185 (s)	37/2.52	1.6	50.5	7985	58.0	10805
240 (s)	61/2.25	1.7	58.0	10595	65.0	13630
300 (s)	61/2.52	1.8	64.0	13220	71.5	16530
400 (s)	61/2.85	2.0	73.0	16805	78.1	21840

(s) : Sector Shaped Stranded Conductors

Current Rating and Voltage Drop

Multi-Core Cables with XLPE (or LSZH) Insulation, PVC (or LSZH) Outsheath 300/500V or 600/1000V
Current-Carrying Capacities (Amp) [CU/XLPE/PVC or CU/XLPE/LSZH cables]

Conductor Operating Temperature : 90°C	BS 7211
Ambient Temperature : 30°C	IEC60502-1

Conductor cross-sectional area	Reference Method 4 (enclosed in an conduit insulated wall etc)	Reference Method 3 (enclosed in conduit on a wall or ceiling, or in trunking)		Reference Method 1 (clipped direct)		Reference Method 11 (on a perforated cable tray), or Reference Method 13 (free air)
Conductor cross-sectional area	one 3-core cable or one 4-core cable 3-phase a.c.	one 2-core cable singlephase a.c. or d.c.	one 3-core cable or one 4-core cable 3-phase a.c.	one 2-core cable singlephase a.c. or d.c.	one 3-core cable or one 4-core cable 3-phase a.c.	one 2-core cable singlephase a.c. or d.c.	one 3-core cable or one 4-core cable 3-phase a.c.
1	2	3	4	5	6	7	8
mm²	A	A	A	A	A	A	A
1.5	16.5	22	19.5	24	22	26	23
2.5	22	30	26	33	30	36	32
4	30	40	35	45	40	49	42
6	38	51	44	58	52	63	54
10	51	69	60	80	71	86	75
16	68	91	80	107	96	115	100
25	89	119	105	138	119	149	127
35	109	146	128	171	147	185	158
50	130	175	154	209	179	225	192
70	164	221	194	269	229	289	246
95	197	265	233	328	278	352	298
120	227	305	268	382	322	410	346
150	259	334	300	441	371	473	399
185	295	384	340	506	424	542	456
240	346	459	398	599	500	641	538
300	396	532	455	693	576	741	621
400	-	625	536	803	667	865	741

Voltage Drop (Per Amp Per Meter) [CU/XLPE/PVC or CU/XLPE/LSZH cables]

Conductor Operating Temperature : 90°C	BS 7211
Ambient Temperature : 30°C	IEC60502-1

Conductor cross-sectional area	2-core cable d.c.	2-core cable single-phase a.c			3-core or 4-core cable 3-phase a.c.
1	2	3			4
mm²	mV/A/m	mV/A/m			mV/A/m
1.5	31		31			27
2.5	19		19			16
4	12		12			10
6	7.9		7.9			6.8
10	4.7		4.7			4.0
16	2.9		2.9			2.5
		r	x	z	r	x	z
25	1.85	1.85	0.16	1.90	1.6	0.14	1.65
35	1.35	1.35	0.155	1.35	1.15	0.135	1.15
50	0.98	0.99	0.155	1.00	0.86	0.135	0.87
70	0.67	0.67	0.150	0.69	0.59	0.130	0.60
95	0.49	0.50	0.150	0.52	0.43	0.130	0.45
120	0.39	0.40	0.145	0.42	0.34	0.130	0.37
150	0.31	0.32	0.145	0.35	0.28	0.125	0.30
185	0.25	0.26	0.145	0.29	0.22	0.125	0.26
240	0.195	0.20	0.140	0.24	0.175	0.125	0.21
300	0.155	0.16	0.140	0.21	0.140	0.120	0.185
400	0.120	0.13	0.140	0.19	0.115	0.120	0.165

Note :
r = conductor resistance at operating temperature
x = reactance
z = impedance

Multi-Core Cables with XLPE (or LSZH) Insulation, Armoured, PVC or LSZH Outsheath 600/1000V
Current-Carrying Capacities (Amp) [CU/XLPE/SWA/PVC or CU/XLPE/SWA/LSZH Cables]

	BS 6724
Conductor Operating Temperature : 90°C	BS 7846
Ambient Temperature : 30°C	IEC60502-1

Conductor cross-sectional area	Reference Method 1 (clipped direct)		Reference Method 11 (on a perforated horizontal cable tray or Reference Method 13 [free air] )		In single-way ducts		Laid direct in ground
	one 2-core cable single phase a.c. or d.c.	one 3-core or 4-core cable 3-phase a.c.	one 2-core cable single phase a.c. or d.c.	one 3-core or 4-core cable 3-phase a.c.	one 2-core cable single phase a.c. or d.c.	one 3-core or 4-core cable 3-phase a.c.	one 2-core cable single phase a.c. or d.c.	one 3-core or 4-core cable 3-phase a.c.
1	2	3	4	5	6	7	8	9
mm²	A	A	A	A	A	A	A	A
1.5	27	23	29	25	-	23	-	28
2.5	36	31	39	33	-	30	-	36
4	49	42	52	44	-	40	-	48
6	62	53	66	56	-	50	-	60
10	85	73	90	78	-	65	-	80
16	110	94	115	99	115	94	140	115
25	146	124	152	131	145	125	180	150
35	180	154	188	162	175	150	215	180
50	219	187	228	197	210	175	255	215
70	279	238	291	251	260	215	315	265
95	338	289	354	304	310	260	380	315
120	392	335	410	353	355	300	430	360
150	451	386	472	406	400	335	480	405
185	515	441	539	463	455	380	540	460
240	607	520	636	546	520	440	630	530
300	698	599	732	628	590	495	700	590
400	787	673	847	728	660	560	790	670

Voltage Drop (Per Amp Per Meter) [CU/XLPE/SWA/PVC or CU/XLPE/SWA/LSZH Cables

	BS 6724
Conductor Operating Temperature : 90°C	BS 7846
Ambient Temperature : 30°C	IEC60502-1

Conductor cross-sectional area	2-core cable d.c.	2 cables, single-phase a.c.			3 or 4 cables, 3-phase a.c.			2 cables, single-phase a.c.	3 or 4 cables, 3-phase a.c.
Conductor cross-sectional area	2-core cable d.c.	2 cables, single-phase a.c.			3 or 4 cables, 3-phase a.c.			In ducts or in ground	In ducts or in ground
1	2	3			4			5	6
mm2	mV/A/m	mV/A/m			mV/A/m			mV/A/m	mV/A/m
1.5	31.0		31.0			27.0		31.0	25.0
2.5	19.0		19.0			16.0		19.0	15.0
4	12.0		12.0			10.0		12.0	9.7
6	7.9		7.9			6.8		7.9	6.5
10	4.7		4.7			4.0		4.7	3.9
16	2.9		2.9			2.5		2.9	2.6
		r	x	z	r	x	z
25	1.850	1.350	0.160	1.900	1.600	0.140	1.650	1.900	1.600
35	1.350	1.350	0.155	1.350	1.150	0.135	1.150	1.350	1.200
50	0.980	0.990	0.155	1.000	0.860	0.135	0.870	1.000	0.870
70	0.670	0.670	0.150	0.690	0.590	0.130	0.600	0.690	0.610
95	0.490	0.500	0.150	0.520	0.430	0.130	0.450	0.520	0.450
120	0.390	0.400	0.145	0.420	0.340	0.130	0.370	0.420	0.360
150	0.310	0.320	0.145	0.350	0.280	0.125	0.300	0.350	0.300
185	0.250	0.260	0.145	0.290	0.220	0.125	0.260	0.290	0.250
240	0.195	0.200	0.140	0.240	0.175	0.125	0.210	0.240	0.210
300	0.155	0.160	0.140	0.210	0.140	0.120	0.185	0.210	0.190
400	0.120	0.130	0.140	0.190	0.115	0.120	0.165	0.190	0.180

Note :
r = conductor resistance at operating temperature
x = reactance
z = impedance

Low Voltage Cables Main

Return to Home