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

Primary UD 25kV Aluminum 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: Aluminum,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 231 Standard Specification for Concentric-Lay-Stranded Aluminum 1350 Conductors
ASTM B 400 Compact Round Concentric-Lay-Stranded Aluminum 1350 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	14	6.60	2.03	32.9	997	8.13	2.03	35.0	1138
1/0	53.5	8.53	16	14	6.60	2.03	33.8	1109	8.13	2.03	37.4	1257
2/0	67.4	9.55	13	12	6.60	2.03	35.7	1257	8.13	2.03	39.9	1443
3/0	85	10.7	16	12	6.60	2.03	36.8	1436	8.13	2.03	41.0	1629
4/0	107	12.1	13	10	6.60	2.03	39.3	1704	8.13	2.03	43.5	1867
1/3 Neutral
1	42.4	7.59	6	14	6.60	2.03	32.9	870	8.13	2.03	35.0	1012
1/0	53.5	8.53	6	14	6.60	2.03	33.8	937	8.13	2.03	37.4	1079
2/0	67.4	9.55	7	14	6.60	2.03	34.8	1027	8.13	2.03	39.0	1213
3/0	85	10.7	9	14	6.60	2.03	36.0	1153	8.13	2.03	40.2	1347
4/0	107	12.1	11	14	6.60	2.03	37.4	1332	8.13	2.03	41.6	1495
250	127	13.2	13	14	6.60	2.03	39.1	1473	8.13	2.03	42.7	1644
350	177	15.6	18	14	6.60	2.03	41.5	1786	8.13	2.79	45.1	2053
500	253	18.7	16	12	6.60	2.03	45.4	2314	8.13	2.79	50.8	2522
750	380	23.1	24	12	6.60	2.79	51.6	3140	8.13	2.79	56.1	3437
1000	507	26.9	20	10	6.60	2.79	57.7	3899	8.13	2.79	61.3	4151

Application and case display

FAQ

What is the service life of cables?

How Do Water-Blocking Cables Work?

Is a flame-retardant cable also fire resistant?

What temperature can high-temperature resistant cables reach, and what are their application scenarios?

What is the minimum order quantity for the product?

How Do Water-Blocking Cables Work?

Water-blocking cables are essential for ensuring reliable operation in environments with high levels of moisture or frequent water contact. These cables employ water-blocking techniques to effectively prevent water ingress, protecting them from damage and prolonging their lifespan.

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

The validity period for most cold shrink cable accessories is typically 3 years from the date of manufacture, provided they are stored under recommended conditions. These conditions usually include controlled humidity and temperature ranges.

What temperature can high-temperature resistant cables reach, and what are their application scenarios?

High-temperature resistant cables are engineered to function within a wide temperature range, spanning from -50°C to +260°C, depending on the cable's specific type and construction. Silicone rubber-insulated cables can withstand temperatures up to 180°C, whereas fluoroplastic insulated cables are designed to endure temperatures as high as 200°C to 260°C over extended periods. They are widely used in steel metallurgy, power, petrochemicals, aerospace, and industrial kilns for power transmission and equipment control in high-heat environments.

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.

What is the application of Armored vs. Unarmored Cables?

Armored cables are suitable for use in hazardous environments, such as underground installations, areas with high moisture levels, and areas prone to mechanical damage. Unarmored cables are suitable for less demanding applications, such as inside walls or other protected locations.

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Primary UD 25kV Aluminum XLPE insulation Concentric Neutral LLDPE Cable

Product Parameters

Application and case display

FAQ

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