Home > Medium Voltage Power Cables > Primary UD 25kV Copper XLPE insulation Concentric Neutral LLDPE Cable

Primary UD 25kV Copper XLPE insulation Concentric Neutral LLDPE Cable

Application

Primary UD Cables are used in primary distribution network systems in residential, commercial and industrial areas. They can be used in conduit pipes, underground ducts or directly buried.

Construction

Conductor: Copper, circular compressed or compacted stranded conductors
Conductor screen: Non-metallic, semi-conducting compound
Insulation: cross-linked polyethylene XLPE or TRXLPE
Insulation screen: Non-metallic, semi-conducting compound
Metallic screen: Copper wires concentric neutral is with full or one-third
Outer sheath:Sunlight resistant,LLDPE

Main Characteristics

Maximum conductor temperature in normal operation: 90°C
Emergency overload temperature: shall not exceed 130°C
Short circuit temperature (5 seconds maximum duration ): shall not exceed 250°C
Product manufacturing options:Blocking elements against the penetration of water in the metallic part for humid and wet environments.

Specification

ASTM B 8 Standard Specification for Concentric-Lay-Stranded Copper Conductors, Hard, Medium-Hard, or Soft
ASTM B 496 Compact Round Concentric-Lay-Stranded Copper Conductors
ANSI/ICEA S-94-649 Concentric Neutral Cables Rated 5 Through 46kV

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Conductor			Copper Neutral		100% Insulation Level				133% Insulation Level
Size	Area	Nominal Diameter	No.of Wires	Size	Nominal Insulation Thickness	Nominal Sheath Thickness	Approx. Overall Diameter	Approx. Weight	Nominal Insulation Thickness	Nominal Sheath Thickness	Approx. Overall Diameter	Approx. Weight
AWG/kcmil	mm²	mm	No.	AWG	mm	mm	mm	kg/km	mm	mm	mm	kg/km
Full Neutral
1	42.4	7.59	13	12	6.60	2.03	33.7	1376	8.13	2.03	35.0	1525
1/0	53.5	8.53	16	12	6.60	2.03	34.7	1600	8.13	2.03	38.3	1748
2/0	67.4	9.55	13	10	6.60	2.03	36.8	1882	8.13	2.03	41.0	2068
3/0	85	10.7	16	10	6.60	2.03	38.0	2262	8.13	2.03	42.2	2463
4/0	107	12.1	20	10	6.60	2.03	39.3	2738	8.13	2.03	43.5	2909
1/3 Neutral
1	42.4	7.59	11	16	6.60	2.03	31.9	1146	8.13	2.03	35.0	1295
1/0	53.5	8.53	14	16	6.60	2.03	33.2	1317	8.13	2.03	36.8	1466
2/0	67.4	67.4	18	16	6.60	2.03	34.2	1510	8.13	2.03	38.4	1696
3/0	85	10.7	22	16	6.60	2.03	35.4	1763	8.13	2.03	39.6	1957
4/0	107	12.1	18	14	6.60	2.03	37.4	2113	8.13	2.03	41.6	2277
250	127	13.2	21	14	6.60	2.03	39.1	2388	8.13	2.03	42.7	2567
350	177	15.6	18	12	6.60	2.03	42.4	3073	8.13	2.79	47.8	3341
500	253	18.7	26	12	6.60	2.03	45.4	4218	8.13	2.79	50.8	4427
750	380	23.1	25	10	6.60	2.79	52.6	5989	8.13	2.79	57.0	6294
1000	507	26.9	32	10	6.60	2.79	57.7	7648	8.13	2.79	61.3	7909

Application and case display

FAQ

What is the application of Armored vs. Unarmored Cables?

How long is the validity period of cold shrink cable accessories?

Is a flame-retardant cable also fire resistant?

What is the purpose of a metallic shield in MV and HV cables?

Armored vs. Unarmored Cables?

What are the weight limits for different types of packages?

The weight limit for a wooden drum or steel wooden is 5,000 kg, and for a steel drum, it is 10,000 kg.

What is the purpose of a metallic shield in MV and HV cables?

Medium and high voltage power cables, typically those in circuits exceeding 2kV, usually feature a shield layer made of copper or aluminum tape. Similar to their use in low voltage cables, metallic wires and tapes are employed to prevent electromagnetic interference. These shields effectively neutralize or significantly diminish the field currents surrounding the conductor or core. The capacitive and inductive charging currents induced under normal operating conditions are subsequently grounded by the metallic screen.

Why do cable prices vary significantly among suppliers within the same region?

Cable prices vary due to differences in supplier strategies, competition, raw materials, and production processes, as well as after-sales services, including installation, equipment, and ongoing support.

What is the minimum order quantity for the product?

The minimum order quantity for low and medium voltage cables is 200 meters, whereas for high voltage cables, it is 2000 meters. Should the order quantity fall below the MOQ, however, if the factory has stock, we can still supply it.

What is the service life of cables?

The design life of power cables is typically 20 to 30 years; however, this can vary significantly based on factors such as installation, environmental conditions, and the quality of the cable.

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Tel: +86-371-63395670

Email: info@starsunelectric.com

Address: No. 1207, Building B, No. 96 Kangning Street, Zhengdong New District, Zhengzhou, China

Primary UD 25kV Copper XLPE insulation Concentric Neutral LLDPE Cable

Product Parameters

Application and case display

FAQ

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