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5-46kV TR-XLPE URD Medium Voltage Utility Cables 1

5-46kV TR-XLPE URD Medium Voltage Utility Cables 2

5-46kV TR-XLPE URD Medium Voltage Utility Cables 3

5-46kV TR-XLPE URD Medium Voltage Utility Cables

5-46kV TR-XLPE URD Medium Voltage Utility Cables with aluminum or copper conductors, triple extruded insulation system consisting of a thermosetting semiconducting conductor shield, high dielectric strength TR-XLPE insulation, thermosetting semiconducting insulation shield, copper concentric neutral wires, black encapsulating linear low-density polyethylene (LLDPE) jacket.

Standard ASTM B-231, AEIC CS8 , ICEA S-94-649 , ICEA T-31-610 , ICEA T-34-664 as applicable for TRXLPE insulated concentric neutral cable , UL 1072 MV-105

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Construction

Technical Specifications

Quality Control

Application

Construction

5-46kV TR-XLPE URD Medium Voltage Utility Cables

Conductor

Solid or Class B Compressed concentric strand Aluminum alloy 1350 or soft drawn annealed copper per ASTM

Insulation

Extruded, Tree-Retardant Cross-linked Polyethylene (TRXLPE) as defined in ANSI/ICEA S- 94-649 – 100% or 133% insulation level.

Conductor Shield

Extruded thermosetting semiconducting shield which is free stripping from the conductor and bonded to the insulation.

Insulation Shield

Extruded thermosetting semiconducting shield with controlled adhesion to the insulation providing the required balance between electrical integrity and ease of stripping

Metallic Shield

Soft annealed solid copper wires per ASTM B3, helically applied and uniformly spaced. Full or 1/3 Neutral.On request, alternate neutral construction and Water Swellable Powder (WSP)

Jacket

Black insulating sunlight resistant linear low-density polyethylene encapsulating the neutral wires with three extruded red stripes and NESC lightning bolt symbol.

Specifications

Maximum operating voltage:
• 5 kV – 46 kV, 100 and 133% IL
Maximum conductor operation
temperatures:
Wet and dry locations
For TR-XLPE
• Normal: 105 °C
• Emergency: 140 °C
• Short Circuit: 250 °C
For XLPE
• Normal: 90 °C
• Emergency: 130 °C
• Short Circuit: 250 °C

Options

- Black LLDPE jacket with no stripes
- Black PVC jacket sleeved over separator tape
- No Jacket
- Multiplex cables
- Tinned round and flat strap neutrals
- Compact stranded conductors
- Super smooth conductor shield
- UL MV-90 Rating if required
- 46kV

Technical Specifications

5-46kV TR-XLPE URD Medium Voltage Utility Cables

5 kV TR-XLPE Insulated

8 kV TR-XLPE Insulated

15 kV TR-XLPE Insulated

25 kV TR-XLPE Insulated

35 kV TR-XLPE Insulated

Copper 100% Insulation Level (90 mil)
Size AWG or kcmil	Number of Strands	Nominal OD Over Insulation	1/3 Neutral					Full Neutral
		Nominal OD Over Insulation	Number of Wires	Size	Jacket Thickness	Approximate Outside Diameter	Approximate Net Weight	Number of Wires	Size	Jacket Thickness	Approximate Outside Diameter	Approximate Net Weight
		in	Number of Wires	AWG	mil	in	lb/kft	Number of Wires	AWG	mil	in	lb/kft
2	7	0.50	6	14	60	0.83	472	16	14	60	0.83	606
1	19	0.54	7	14	80	0.87	551	13	12	80	0.95	775
1/0	19	0.58	9	14	80	0.95	697	16	12	80	0.99	922
2/0	19	0.63	11	14	80	1.00	826	13	10	80	1.07	1131
3/0	19	0.68	14	14	80	1.05	993	16	10	80	1.12	1359
4/0	19	0.73	18	14	80	1.10	1204	16	9	80	1.20	1662
250	37	0.79	13	12	80	1.19	1385	25	10	80	1.23	1961
350	37	0.89	18	12	80	1.29	1841	22	8	80	1.39	2656
500	37	1.02	17	10	80	1.49	2578	31	8	80	1.54	3678
750	61	1.21	20	9	110	1.77	3815	—	—	—	—	—
1000	61	1.36	26	9	110	1.91	4912	—	—	—	—	—
Aluminum 100% Insulation Level (90 mil)
2	7	0.50	6	14	60	0.83	330	10	14	60	0.83	383
1	19	0.54	6	14	80	0.91	395	13	14	80	0.91	489
1/0	19	0.58	6	14	80	0.95	431	16	14	80	0.95	564
2/0	19	0.62	7	14	80	1.00	488	13	12	80	1.03	676
3/0	19	0.67	9	14	80	1.05	567	16	12	80	1.08	792
4/0	19	0.73	11	14	80	1.10	657	13	10	80	1.18	962
250	37	0.79	13	14	80	1.16	741	16	10	80	1.24	1121
350	37	0.89	18	14	80	1.26	942	16	9	80	1.36	1400
500	37	1.02	16	12	80	1.45	1261	29	10	80	1.49	1908
750	61	1.22	15	10	110	1.76	1872	—	—	—	—	—
1000	61	1.37	16	9	110	1.93	2360	—	—	—	—	—

The above data are approximate and subject to normal manufacturing tolerances. Other sizes available upon request.

Ampacities: Refer to beginning of section.

Copper 100% Insulation Level (115 mil)
Size AWG or kcmil	Number of Strands	Nominal OD Over Insulation	1/3 Neutral					Full Neutral
		Nominal OD Over Insulation	Number of Wires	Size	Jacket Thickness	Approximate Outside Diameter	Approximate Net Weight	Number of Wires	Size	Jacket Thickness	Approximate Outside Diameter	Approximate Net Weight
		in	Number of Wires	AWG	mil	in	lb/kft	Number of Wires	AWG	mil	in	lb/kft
2	7	0.55	6	14	60	0.88	498	16	14	60	0.88	632
1	19	0.59	7	14	80	0.96	617	13	12	80	1.00	805
1/0	19	0.63	9	14	80	1.00	728	16	12	80	1.04	953
2/0	19	0.68	11	14	80	1.05	858	13	10	80	1.12	1163
3/0	19	0.73	14	14	80	1.10	1027	16	10	80	1.17	1393
4/0	19	0.78	18	14	80	1.15	1240	16	9	80	1.25	1697
250	37	0.84	13	12	80	1.24	1423	—	—	—	—	—
350	37	0.94	18	12	80	1.35	1881	—	—	—	—	—
500	37	1.07	17	10	80	1.54	2624	—	—	—	—	—
750	61	1.26	20	9	110	1.82	3870	—	—	—	—	—
1000	61	1.41	26	9	110	1.97	4972	—	—	—	—	—
Aluminum 100% Insulation Level (115 mil)
2	7	0.55	6	14	80	0.92	393	10	14	80	0.92	447
1	19	0.59	6	14	80	0.96	424	13	14	80	0.96	518
1/0	19	0.63	6	14	80	1.00	461	16	14	80	1.00	595
2/0	19	0.68	7	14	80	1.05	520	13	12	80	1.08	708
3/0	19	0.73	9	14	80	1.10	600	16	12	80	1.13	825
4/0	19	0.78	11	14	80	1.15	693	13	10	80	1.23	998
250	37	0.84	13	14	80	1.21	778	16	10	80	1.29	1158
350	37	0.94	18	14	80	1.31	983	16	9	80	1.41	1440
500	37	1.07	16	12	80	1.50	1307	29	10	80	1.54	1954
750	61	1.27	15	10	110	1.81	1927	—	—	—	—	—
1000	61	1.42	16	9	110	1.98	2419	—	—	—	—	—

The above data are approximate and subject to normal manufacturing tolerances. Other sizes available upon request.

Ampacities: Refer to beginning of section.

Copper 100% Insulation Level (175 mil)
Size AWG or kcmil	Number of Strands	Nominal OD Over Insulation	1/3 Neutral					Full Neutral
		Nominal OD Over Insulation	Number of Wires	Size	Jacket Thickness	Approximate Outside Diameter	Approximate Net Weight	Number of Wires	Size	Jacket Thickness	Approximate Outside Diameter	Approximate Net Weight
		in	Number of Wires	AWG	mil	in	lb/kft	Number of Wires	AWG	mil	in	lb/kft
2	1	0.68	6	14	80	1.05	610	16	14	80	1.05	743
2	7	0.68	6	14	80	1.05	610	16	14	80	1.05	743
1	19	0.71	7	14	80	1.09	694	13	12	80	1.12	883
1/0	19	0.75	9	14	80	1.13	808	16	12	80	1.16	1034
2/0	19	0.80	11	14	80	1.17	942	13	10	80	1.25	1247
3/0	19	0.85	14	14	80	1.22	1115	16	10	80	1.30	1481
4/0	19	0.90	18	14	80	1.28	1332	16	9	80	1.38	1790
250	37	0.96	13	12	80	1.37	1519	25	10	80	1.41	2095
350	37	1.06	18	12	80	1.49	2011	22	8	80	1.59	2826
500	37	1.19	17	10	80	1.66	2741	31	8	110	1.78	3947
750	61	1.38	20	9	110	1.94	4008	—	—	—	—	—
1000	61	1.53	26	9	110	2.12	5170	—	—	—	—	—
Aluminum 100% Insulation Level (175 mil)
2	7	0.67	6	14	80	1.05	467	10	14	80	1.05	520
1	19	0.71	6	14	80	1.08	501	13	14	80	1.08	595
1/0	19	0.75	6	14	80	1.12	541	16	14	80	1.12	675
2/0	19	0.80	7	14	80	1.17	603	13	12	80	1.20	791
3/0	19	0.85	9	14	80	1.22	687	16	12	80	1.25	912
4/0	19	0.90	11	14	80	1.27	784	13	10	80	1.35	1089
250	37	0.96	13	14	80	1.33	874	16	10	80	1.41	1253
350	37	1.06	18	14	80	1.46	1110	16	9	80	1.56	1568
500	37	1.19	16	12	80	1.62	1422	29	10	80	1.66	2069
750	61	1.40	24	12	110	1.89	2059	—	—	—	—	—
750	61	1.40	15	10	110	1.93	2065	—	—	—	—	—
1000	61	1.54	16	9	110	2.13	2616	—	—	—	—	—

The above data are approximate and subject to normal manufacturing tolerances. Other sizes available upon request.

Ampacities: Refer to beginning of section.

Copper 133% Insulation Level (220 mil)
Size AWG or kcmil	Number of Strands	Nominal OD Over Insulation	1/3 Neutral					Full Neutral
		Nominal OD Over Insulation	Number of Wires	Size	Jacket Thickness	Approximate Outside Diameter	Approximate Net Weight	Number of Wires	Size	Jacket Thickness	Approximate Outside Diameter	Approximate Net Weight
		in	Number of Wires	AWG	mil	in	lb/kft	Number of Wires	AWG	mil	in	lb/kft
2	7	0.77	6	14	80	1.14	672	16	14	80	1.14	805
1	19	0.81	7	14	80	1.18	759	13	12	80	1.21	947
1/0	19	0.85	9	14	80	1.22	875	16	12	80	1.25	1100
2/0	19	0.89	11	14	80	1.26	1012	13	10	80	1.34	1316
3/0	19	0.94	14	14	80	1.31	1187	16	10	80	1.39	1553
4/0	19	1.00	18	14	80	1.37	1407	16	9	80	1.47	1865
250	37	1.05	13	12	80	1.48	1622	25	10	80	1.52	2198
350	37	1.16	18	12	80	1.58	2097	22	8	80	1.68	2912
500	37	1.28	17	10	110	1.82	2943	31	8	110	1.87	4046
750	61	1.47	20	9	110	2.03	4118	—	—	—	—	—
1000	61	1.62	26	9	110	2.21	5291	—	—	—	—	—
Aluminum 133% Insulation Level (220 mil)
2	7	0.76	6	14	80	1.14	528	10	14	80	1.14	582
1	19	0.80	6	14	80	1.18	565	13	14	80	1.18	658
1/0	19	0.84	6	14	80	1.22	607	16	14	80	1.22	741
2/0	19	0.89	7	14	80	1.26	671	13	12	80	1.29	859
3/0	19	0.94	9	14	80	1.31	758	16	12	80	1.34	983
4/0	19	0.99	11	14	80	1.37	858	13	10	80	1.44	1163
250	37	1.05	13	14	80	1.44	975	16	10	80	1.52	1355
350	37	1.15	18	14	80	1.55	1195	16	9	80	1.65	1653
500	37	1.28	16	12	110	1.77	1622	29	10	110	1.81	2272
750	61	1.49	15	10	110	2.02	2175	—	—	—	—	—
1000	61	1.64	16	9	110	2.23	2737	—	—	—	—	—

The above data are approximate and subject to normal manufacturing tolerances. Other sizes available upon request.

Ampacities: Refer to beginning of section.

Copper 100% Insulation Level (260 mil)
Size AWG or kcmil	Number of Strands	Nominal OD Over Insulation	1/3 Neutral					Full Neutral
		Nominal OD Over Insulation	Number of Wires	Size	Jacket Thickness	Approximate Outside Diameter	Approximate Net Weight	Number of Wires	Size	Jacket Thickness	Approximate Outside Diameter	Approximate Net Weight
		in	Number of Wires	AWG	mil	in	lb/kft	Number of Wires	AWG	mil	in	lb/kft
1	19	0.89	7	14	80	1.26	820	13	12	80	1.29	1009
1/0	19	0.93	9	14	80	1.30	939	16	12	80	1.33	1164
2/0	19	0.97	11	14	80	1.34	1077	32	14	80	1.34	1358
3/0	19	1.02	14	14	80	1.42	1280	20	12	80	1.38	1361
4/0	19	1.08	18	14	80	1.47	1504	13	10	80	1.42	1382
250	37	1.13	13	12	80	1.56	1698	16	10	80	1.49	1646
350	37	1.24	18	12	80	1.66	2178	16	9	80	1.57	1961
500	37	1.37	17	10	110	1.90	3035	25	10	80	1.60	2274
750	61	1.56	20	9	110	2.14	4269	22	8	110	1.82	3102
1000	61	1.70	26	9	110	2.29	5403	31	8	110	1.95	4139
Aluminum 100% Insulation Level (260 mil)
1	19	0.88	6	14	80	1.26	626	13	14	80	1.26	719
1/0	19	0.92	6	14	80	1.30	670	16	14	80	1.30	804
2/0	19	0.97	7	14	80	1.34	736	13	12	80	1.37	925
3/0	19	1.02	9	14	80	1.41	849	16	12	80	1.45	1075
4/0	19	1.07	11	14	80	1.47	953	13	10	80	1.54	1258
250	37	1.13	13	14	80	1.53	1050	16	10	80	1.60	1430
350	37	1.23	18	14	80	1.63	1275	16	9	80	1.79	1842
500	37	1.36	16	12	110	1.85	1714	29	10	110	1.90	2363
750	61	1.57	15	10	110	2.13	2325	—	—	—	—	—
1000	61	1.72	16	9	110	2.31	2848	—	—	—	—	—

The above data are approximate and subject to normal manufacturing tolerances. Other sizes available upon request.

Ampacities: Refer to beginning of section.

Copper 133% Insulation Level (320 mil)
1/3 Neutral							Full Neutral
Size AWG or kcmil	Number of Strands	Nominal OD Over Insulation	Number of Wires	Size	Jacket Thickness	Approximate Outside Diameter	Approximate Net Weight	Size AWG or kcmil	Number of Strands	Nominal OD Over Insulation	Number of Wires	Size	Jacket Thickness	Approximate Outside Diameter	Approximate Net Weight
Size AWG or kcmil	Number of Strands	Nominal OD Over Insulation	Number of Wires	AWG	mil	Approximate Outside Diameter	Approximate Net Weight	Size AWG or kcmil	Number of Strands	Nominal OD Over Insulation	Number of Wires	AWG	mil	Approximate Outside Diameter	Approximate Net Weight
1/0	19	1.05	9	14	80	1.44	1067	1 - 00	19	1.05	16	12	80	1.48	1292
2/0	19	1.09	11	14	80	1.49	1210	2 - 00	19	1.09	13	10	80	1.56	1515
3/0	19	1.14	14	14	80	1.54	1392	3 - 00	19	1.14	16	10	80	1.61	1758
4/0	19	1.20	18	14	80	1.59	1621	4 - 00	19	1.20	16	9	110	1.76	2184
250	37	1.26	13	12	80	1.68	1820	250	37	1.26	25	10	110	1.79	2502
350	37	1.36	18	12	110	1.85	2418	350	37	1.36	22	8	110	1.94	3239
500	37	1.49	17	10	110	2.02	3182	500	37	1.49	31	8	110	2.07	4285
750	61	1.68	20	9	110	2.27	4433	—	—	—	—	—	—	—	—
1000	61	1.83	26	9	110	2.42	5578	—	—	—	—	—	—	—	—
Aluminum 133% Insulation Level (320 mil)
1/0	1	1.01	6	14	50	1.31	691	1 - 00	1	1.01	16	14	50	1.31	811
1/0	19	1.05	6	14	50	1.37	744	1 - 00	19	1.05	16	14	50	1.37	865
2/0	19	1.09	7	14	50	1.42	812	2 - 00	19	1.09	20	14	50	1.42	969
3/0	19	1.14	9	14	50	1.47	903	2 - 00	19	1.14	13	12	50	1.45	1007
4/0	19	1.20	11	14	50	1.52	1007	3 - 00	19	1.14	25	14	50	1.47	1096
250	37	1.25	13	14	50	1.58	1105	3 - 00	19	1.14	16	12	50	1.50	1132
350	37	1.35	18	14	80	1.74	1398	4 - 00	19	1.20	32	14	50	1.52	1260
500	37	1.48	25	14	80	1.87	1715	4 - 00	19	1.20	20	12	50	1.55	1290
500	37	1.48	16	12	80	1.91	1760	4 - 00	19	1.20	13	10	50	1.60	1346
750	61	1.69	24	12	80	2.14	2361	250	37	1.25	25	12	50	1.61	1461
750	61	1.69	15	10	80	2.18	2417	250	37	1.25	16	10	80	1.72	1581
1000	61	1.84	31	12	80	2.29	2846	350	37	1.35	32	12	80	1.78	1831
1000	61	1.84	20	10	80	2.33	2924	350	37	1.35	20	10	80	1.82	1876
1000	61	1.84	16	9	80	2.36	2966	350	37	1.35	16	9	80	1.84	1910
—	—	—	—	—	—	—	—	500	37	1.48	29	10	80	1.95	2389
—	—	—	—	—	—	—	—	750	61	1.69	28	8	80	2.24	3391
—	—	—	—	—	—	—	—	1000	61	1.84	37	8	80	2.39	4188

The above data are approximate and subject to normal manufacturing tolerances. Other sizes available upon request.

Ampacities: Refer to beginning of section.

Copper 100% Insulation Level (345 mil)
Size AWG or kcmil	Number of Strands	Nominal OD Over Insulation	1/3 Neutral					Full Neutral
		Nominal OD Over Insulation	Number of Wires	Size	Jacket Thickness	Approximate Outside Diameter	Approximate Net Weight	Number of Wires	Size	Jacket Thickness	Approximate Outside Diameter	Approximate Net Weight
		in	Number of Wires	AWG	mil	in	lb/kft	Number of Wires	AWG	mil	in	lb/kft
1 - 00	19	1.09	9	14	80	1.50	1114	16	12	80	1.53	1397
2 - 00	19	1.15	11	14	80	1.54	1258	13	10	80	1.62	1652
3 - 00	19	1.20	14	14	80	1.59	1442	16	10	80	1.67	1896
4 - 00	19	1.25	18	14	80	1.65	1673	16	9	110	1.81	2305
250	37	1.31	13	12	110	1.80	1981	25	10	110	1.84	2596
350	37	1.41	18	12	110	1.90	2477	22	8	110	2.00	3371
500	37	1.54	17	10	110	2.10	3294	31	8	110	2.16	4448
750	61	1.73	20	9	110	2.32	4504	—	—	—	—	—
1000	61	1.88	26	9	110	2.47	5654	—	—	—	—	—
Aluminum 100% Insulation Level (345 mil)
1 - 00	19	1.09	6	14	80	1.49	842	16	14	80	1.49	976
2 - 00	19	1.14	7	14	80	1.53	914	13	12	80	1.57	1102
3 - 00	19	1.19	9	14	80	1.58	1010	16	12	80	1.62	1235
4 - 00	19	1.25	11	14	80	1.64	1120	13	10	110	1.78	1533
250	37	1.30	13	14	110	1.76	1330	16	10	110	1.84	1714
350	37	1.40	18	14	110	1.86	1572	16	9	110	1.96	2036
500	37	1.53	16	12	110	2.06	1969	29	10	110	2.10	2619
750	61	1.74	15	10	110	2.30	2560	—	—	—	—	—
1000	61	1.89	16	9	110	2.48	3099	—	—	—	—	—

The above data are approximate and subject to normal manufacturing tolerances. Other sizes available upon request.

Ampacities: Refer to beginning of section.

Copper 133% Insulation Level (420 mil)
Size AWG or kcmil	Number of Strands	Nominal OD Over Insulation	1/3 Neutral					Full Neutral
		Nominal OD Over Insulation	Number of Wires	Size	Jacket Thickness	Approximate Outside Diameter	Approximate Net Weight	Number of Wires	Size	Jacket Thickness	Approximate Outside Diameter	Approximate Net Weight
		in	Number of Wires	AWG	mil	in	lb/kft	Number of Wires	AWG	mil	in	lb/kft
1 - 00	19	1.25	9	14	80	1.65	1264	16	12	80	1.68	1489
2 - 00	19	1.30	11	14	110	1.76	1517	13	10	110	1.83	1827
3 - 00	19	1.35	14	14	110	1.81	1709	16	10	110	1.88	2080
4 - 00	19	1.40	18	14	110	1.86	1948	16	9	110	1.96	2412
250	37	1.46	13	12	110	1.95	2160	25	10	110	1.99	2738
350	37	1.56	18	12	110	2.08	2716	22	8	110	2.18	3537
500	37	1.69	17	10	110	2.26	3499	31	8	110	2.31	4603
750	61	1.88	20	9	110	2.47	4728	—	—	—	—	—
1000	61	2.03	26	9	110	2.62	5892	—	—	—	—	—
Aluminum 133% Insulation Level (420 mil)
1 - 00	19	1.25	6	14	80	1.64	990	16	14	80	1.64	1124
2 - 00	19	1.29	7	14	110	1.75	1173	13	12	110	1.78	1363
3 - 00	19	1.34	9	14	110	1.80	1276	16	12	110	1.83	1504
4 - 00	19	1.40	11	14	110	1.86	1395	13	10	110	1.93	1705
250	37	1.45	13	14	110	1.91	1507	16	10	110	1.99	1891
350	37	1.56	18	14	110	2.04	1807	16	9	110	2.15	2271
500	37	1.68	16	12	110	2.21	2172	29	10	110	2.25	2821
750	61	1.89	15	10	110	2.46	2782	—	—	—	—	—
1000	61	2.04	16	9	110	2.63	3335	—	—	—	—	—

The above data are approximate and subject to normal manufacturing tolerances. Other sizes available upon request.

Ampacities: Refer to beginning of section.

Quality Control

5-46kV TR-XLPE URD Medium Voltage Utility Cables

Raw Material Test

NPC has always chosen raw material suppliers who have a good reputation, possess stable supply capabilities and have passed international quality system certifications (such as ISO 9001). And establish a long-term cooperative relationship with it, forming a stable and reliable raw material supply chain.
We will ensure that all raw materials are subject to strict inspection procedures upon entry to the factory, and can only be stored in the warehouse after they have been confirmed to meet the standards.

Process inspection

NPC has strict quality control procedures for each process in the cable production process.
Process documents: Develop detailed process flow and operation instructions to clarify the operating specifications and quality standards of each process.
Equipment calibration: Regularly calibrate key equipment such as wire drawing machines, stranding machines, extruders, and diameter gauges to ensure that the accuracy meets the requirements.
First piece confirmation: Before each batch of production, the first piece is trial-produced to confirm that the process parameters, product dimensions, electrical performance, etc. meet the standards before mass production can be carried out.

Finished Product

Inspectors conduct ex-factory inspections on cables according to relevant standards and corresponding product inspection specifications to ensure that each ex-factory product complies with the process regulations.

Application

URD cables are intended for use in wet or dry locations for the distribution of single or three-phase medium-voltage power. These cables may be installed in ducts or directly buried.

Renewable Energy

Power & Energy Industry

Transport Sector

Real Estate & Construction

Infrastructure & Municipal Industry

Data Centers

Mining and Oil & Gas Industry

Industrial Manufacturer

Technical Advantages

● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions

Conductor Stranded Work Shop

CCV Production Line

CCV production 01

Partical Voltage Test Labtoary

Auto-Winding Machine

Oil Chromatography Test Machine

Auto-core cutting machine

Basic Insulation Level Test Labtoary

Auto Laser Cutting Machine

Automatic Desanding Machine

Automatic Dryer Machine

Product Packaging

Wires and Cables packaging (1)

Wires and Cables packaging (2)

Wires and Cables packaging (3)

Wires and Cables packaging (4)

Wires and Cables packaging (5)

Wires and Cables packaging (6)

Wires and Cables packaging (7)

Wires and Cables packaging (8)

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FAQ From Customers

What are the advantages of power cables and overhead lines?

(1) Reliable operation, because it is installed in a hidden place such as underground, it is less damaged by external forces, has less chance of failure, and the power supply is safe, and it will not cause harm to people;
(2) The maintenance workload is small and frequent inspections are not required;
(3) No need to erect towers;
(4) Help improve power factor.

Which aspects should be considered when choosing the cross section of a power cable?

(1) The long-term allowable working current of the cable;
(2) Thermal stability once short circuited;
(3) The voltage drop on the line cannot exceed the allowable working range.

What are the measures for cable fire prevention?

(1) Use flame-retardant cables;
(2) Use fireproof cable tray;
(3) Use fireproof paint;
(4) Fire partition walls and fire baffles are installed at cable tunnels, mezzanine exits, etc.;
(5) Overhead cables should avoid oil pipelines and explosion-proof doors, otherwise local pipes or heat insulation and fire prevention measures should be taken.

What should be paid attention to during the transportation and handling of cables?

(1) During transportation, loading and unloading, cables and cable reels should not be damaged. It is strictly forbidden to push the cable reels directly from the vehicle. Generally, cables should not be transported and stored flat.
(2) Before transporting or rolling the cable reel, ensure that the cable reel is firm, the cable is wound tightly, the oil pipe between the oil-filled cable and the pressure oil tank should be fixed without damage, the pressure oil tank should be firm, and the pressure indication should meet the requirements.

What inspections should be carried out for the acceptance of cable lines?

(1) The cable specifications should meet the regulations, the arrangement should be neat, no damage, and the signs should be complete, correct and clear;
(2) The fixed bending radius of the cable, the related distance and the wiring of the metal sheath of the single-core power cable should meet the requirements;
(3) The cable terminal and the middle head should not leak oil, and the installation should be firm. The oil pressure of the oil-filled cable and the meter setting should meet the requirements;
(4) Good grounding;
(5) The color of the cable terminal is correct, and the metal parts such as the bracket are completely painted;
(6) There should be no debris in the cable trench, tunnel, and bridge, and the cover should be complete.

How many projects can cable engineering be divided into?

(1) Construction site transportation: including the loading and unloading, transportation and empty vehicle return journey of engineering materials from the warehouse to the construction site.
(2) Local engineering: including road excavation, tunnel, trench construction, etc.
(3) Laying engineering: including laying, intermediate head production, lift cover plate, buried pipe, school tide, tractor head production, etc.
(4) Two-end engineering: including the production and installation of support, suspension bridge and its foundation, the production of terminal heads, the installation of oil pressure and signal devices, and the electrical performance testing of various types.
(5) Stopping works: including the production of oil-filled cable stop heads, the installation of fuel supply tanks, automatic drainage and signal devices, etc.
(6) Grounding engineering: including installation of insulation joints, transposition boxes, protectors, and grounding boxes.

What tests and inspections should be carried out on power cables before laying?

Before laying, check whether the type, specification and length of the cable meet the requirements and whether there is external force damage. Low-voltage cables use a 1000V megohmmeter to remotely measure the insulation resistance, and the resistance is generally not less than 10MΩ. High-voltage cables use a 2500V megger to measure the resistance. Generally not less than 400MΩ.

What are the factors that determine the long-term allowable current carrying capacity of the cable?

(1) The long-term allowable working temperature of the cable;
(2) The heat dissipation performance of the cable itself;
(3) The condition of the cable installation and the heat dissipation conditions of the surrounding environment.

According to the difference of insulation and protective layer, what are the main types of commonly used low-voltage power cables?

(1) Oil-impregnated paper insulated lead-clad (or aluminum-clad) power cable;
(2) Non-drip oil-impregnated paper insulated power cable;
(3) PVC insulated and sheathed power cable;
(4) Cross-linked PVC insulated and PE sheathed power cable;
(5) Cross-linked PVC insulated and sheathed power cable;
(6) Rubber insulated power cables.

What are the requirements for the fire blocking of cable holes?

For larger cable penetration holes, such as the cable penetration floor, etc., when using fireproof blocking materials to block, according to the actual situation, first coat four to six layers of fireproof paint on the cable surface, the length is about 1.5m below the hole, and then use fire-resistant The material is processed into a board-supporting fire-proof blocking material with a certain strength to ensure that it is firm after being blocked and is easy to disassemble and assemble when the cable is replaced. The plugging is dense and non-porous to effectively block smoke and fire.

What are the main properties of the insulation material of the power cable?

(1) High breakdown strength;
(2) Low dielectric loss;
(3) Very high insulation resistance;
(4) Excellent discharge resistance;
(5) It has certain flexibility and mechanical strength;
(6) Long-term insulation performance is stable.

What are the regulations for cable protection tubes?

(1) When the cable needs to be laid through a protective pipe, the inner diameter of the pipe should not be less than 1.5 times the outer diameter of the cable, and the inner diameter of the concrete pipe, clay pipe, asbestos, and cement pipe should not be less than 100mm;
(2) The bending radius of the cable tube should meet the requirements of the bending radius of the cable inserted;
(3) Each pipe should not exceed three elbows at most, and there should be no more than two right-angle bends.

How to measure the outer diameter of the cable sheath?

At five evenly distributed points on the circumference of the sheath, measure the outer diameter of the sheath and its average value. The average outer diameter is the outer diameter of the sheath.

How to connect copper core cables with different cross-sections?

Copper core cables with different cross-sections can be connected by open-back weak copper pipes and connected by soldering, or pure copper rods can be connected into copper pipes according to different cross-sectional requirements and connected by crimping.

What are the insulating materials used to make cable terminal heads or intermediate joints?

There are insulating glue, insulating tape, insulating tube, insulating gloves, insulating resin, etc.

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