Home > High Voltage Power Cables > 40/69kV XLPE insulated Copper wire shielded HDPE sheath Cable

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

40/69kV 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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conductor		nominal insulation thickness	Insulation dia.	copper-wire screen cross section	nominal sheath thickness	overall dia.	approx.mass		DC resistance@20℃		capacitance at 20℃
nominal cross section	Diameter	nominal insulation thickness	Insulation dia.	copper-wire screen cross section	nominal sheath thickness	overall dia.	CU	AL	CU	AL	capacitance at 20℃
mm²	mm	mm	mm	mm	mm	mm	kg/km	kg/km	Ω/km	Ω/km	μF/km
1×185	16.2	16	51	50	4	67.9	4676	3532	0.0991	0.164	0.124
1×240	18.4	15	51.2	50	4	68.1	5094	3634	0.0754	0.125	0.141
1×300	20.6	15	53.4	50	4	70.3	5801	3957	0.0601	0.1	0.151
1×400	23.4	15	56.2	50	4	73.1	6746	4382	0.047	0.0778	0.167
1×500	26.6	14	57.4	50	4	74.3	7716	4685	0.0336	0.0605	0.194
1×630	30	14	60.8	50	4	77.7	9165	5285	0.0283	0.0469	0.21
1×800	34	14	64.8	50	4	81.7	10983	6027	0.0221	0.0367	0.222
1×800	35	14	67.1	50	4	84	11247	6291	0.0221	0.0367	0.231
1×1000	39	14	71.1	50	4.5	89	13479	7261	0.0176	0.0291	0.256
1×1200	42.6	14	74.7	50	4.5	92.6	15526	8164	0.0151	0.0247	0.271
1×1400	45.2	14	77.3	50	4.5	95.2	17496	8896	0.0129	0.0212	0.286
1×1600	48.5	14	80.6	50	4.5	98.5	19429	9654	0.0113	0.0186	0.299
1×1800	50.8	14	82.9	50	4.5	100.8	21400	10263	0.0101	0.0165	0.312
1×2000	54	14	86.1	50	4.5	104	23569	11195	0.009	0.0145	0.327
1×2200	57.4	14	89.5	50	4.5	107.4	25598	11987	0.0083	0.0135	0.345
1×2500	61.2	14	93.3	50	4.5	111.2	28546	13079	0.0072	0.0127	0.362

Application and case display

FAQ

Armored vs. Unarmored Cables?

What is the minimum order quantity for the product?

What is the operating temperature of the cable?

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

How do you calculate the minimum bending radius of cables?

What is the service life of cables?

Armored vs. Unarmored Cables?

Armored cables are ideal for direct burial and laying underground, offering protection against environmental factors. Unarmored cables are unsuitable for burial or use in other challenging applications and installations.

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 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.

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.

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 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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Email: info@starsunelectric.com

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40/69kV XLPE insulated Copper wire shielded HDPE sheath Cable

Product Parameters

Application and case display

FAQ

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