Home > High Voltage Power Cables > 230/400kV Copper XLPE insulated Copper wire shielded HDPE sheath Cable

XLPE-insulated-Copper-wire-shielded-HDPE-sheathed-cable

230/400kV Copper XLPE insulated Copper wire shielded HDPE sheath Cable

Application

High voltage power cables are designed for transmitting electrical power at voltages above 150kV. These cables are crucial for power transmission and distribution networks, connecting power plants to substations and distributing electricity across vast distances.

Construction

Conductor: Copper
Conductor Screen: Semi-conductive tape+Semi-conductive Compound
Insulation: XLPE (Cross-linked Polyethylene)
Insulation Screen: Semi-conductive Compound
Wrapping: Semi-conductive water blocking tape
Metallic Screen: Copper wires
Tape: Aluminum plastic composite
Sheath: HDPE (High Density Polyethylene)

Main Characteristics

Operating Temperature: -30°C to +90°C
Short Circuit Temperature: +250°C
Overload Temperature: +130°C (100h per year maximum)
Minimum Installation Temperature: -20°C

Specification

IEC 62067, Power cables with extruded insulation and their accessories for rated voltages above 150 kV (U=170 kV) up to 500 kV.

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Nom. Cross-Section Area	Nom. Insulation Thickness	Metallic Screen Area	Approx. Overall Diameter	Approx. Weight
Nom. Cross-Section Area	Nom. Insulation Thickness	Metallic Screen Area	Approx. Overall Diameter	CU	AL
mm2	mm	mm2	mm	kg/m	kg/m
630	33	170	118	17	13
800	31	170	118	18	13
1000	29	170	118	20	14
1000	29	170	121	20	14
1200	27	170	120	22	14
1400	27	170	123	24	15
1600	37	170	127	26	16
1800	26	170	128	28	17
2000	26	170	131	30	18
2500	26	170	138	36	20

Application and case display

FAQ

Flame Retardant Cables VS Fire Resistant Cables?

What is the length tolerance for cables?

What is the minimum order quantity for the product?

What are the weight limits for different types of packages?

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

What is the operating temperature of the cable?

The operating temperature of a cable is determined by the insulation and sheathing material. PVC has a range of -15°C to 70°C, XLPE can reach up to 90°C, while silicone rubber can handle temperatures from -60°C to 180°C.

How do you calculate the minimum bending radius of cables?

The bend radius refers to the curved shape in which an electrical cable can be bent or curved without sustaining damage. To determine the minimum bend radius for cables, apply the following formula: Minimum Bend Radius = Cable Outer Diameter×Cable Multiplier. For example, if the outer diameter of a cable is 20mm, its minimum bending radius would be 20mm×6 = 120mm. Conversely, if an armored cable has an outer diameter of 30mm, its minimum bending radius would be 30mm×12 = 360mm.

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 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.

Flame Retardant Cables VS Fire Resistant Cables?

Both types of cables are crucial in enhancing the likelihood of escape and survival in the event of a fire and are often confused with one another. However, there is a fundamental distinction between flame retardant cables and fire resistant cables. Flame retardant cables are engineered to inhibit the spread of fire to adjacent areas. On the other hand, fire resistant cables are specifically designed to preserve circuit integrity and ensure functionality during a fire, under specified conditions, aiding both evacuees and firefighters.

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We're here to answer any questions you may have about our products, services, or technical specifications.

Tel: +86-371-63395670

Email: info@starsunelectric.com

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

230/400kV Copper XLPE insulated Copper wire shielded HDPE sheath Cable

Product Parameters

Application and case display

FAQ

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