76/132kV High Voltage Power Cable

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Category:High Voltage Power Cable

76/132kV (145kV) high voltage power cable is designed to transmit electricity at high voltages with a nominal voltage rating typically ranging from 76kV/132kV but with a maximum operating voltage of 145kV. Heres a detailed technical descr...

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76/132kV (145kV) high voltage power cable is designed to transmit electricity at high voltages, with a nominal voltage rating typically ranging from 76kV/132kV, but with a maximum operating voltage of 145kV. Here's a detailed technical description of such a cable:

76/132kV High Voltage Power Cable construction

Conductor: The conductor is usually made of high-conductivity materials such as copper or aluminum. The conductor size and configuration are determined based on the current-carrying capacity required for the application and the specific requirements of the transmission system.

Insulation: The cable features robust insulation to prevent electrical breakdown and leakage currents. Common insulation materials include cross-linked polyethylene (XLPE) or ethylene propylene rubber (EPR), chosen for their excellent electrical properties and mechanical strength.

Shielding: Metallic shielding layers, such as copper tape or wire, may be incorporated to provide additional protection against electrical interference and to contain the electric field within the cable, ensuring the safety and reliability of the transmission system.

Jacket: The outer jacket provides mechanical protection and resistance to environmental factors such as moisture, chemicals, and abrasion. Materials like polyvinyl chloride (PVC) or high-density polyethylene (HDPE) are commonly used for the jacket.

Voltage Rating: The cable is designed to operate safely at voltages ranging from 76kV to 145kV, making it suitable for high-voltage transmission applications within this voltage range.

Current Rating: The cable's current carrying capacity, expressed in amperes (A), is determined by factors such as conductor size, insulation material, and ambient temperature conditions, ensuring efficient and reliable transmission of electricity.

Temperature Rating: The cable is rated for maximum operating temperatures to ensure that it can withstand the heat generated during operation without compromising its electrical or mechanical properties. This rating is critical for determining the cable's ampacity and its suitability for specific environmental conditions.

Installation Requirements: Details regarding installation parameters such as bending radius, burial depth (for underground installations), and any special considerations or precautions necessary during handling and installation to ensure the cable's proper functioning and longevity.

Standards Compliance: The cable must comply with relevant industry standards and specifications, such as those established by organizations like the International Electrotechnical Commission (IEC) or the Institute of Electrical and Electronics Engineers (IEEE), to ensure its performance, safety, and reliability.

Testing and Quality Assurance: The cable undergoes rigorous testing procedures and quality control measures to ensure that it meets or exceeds specified performance and safety standards, providing assurance of its reliability and longevity in service.

76/132kv High Voltage Cable Specification

76/132 (145) kV High Voltage Power Cable With Copper Wire Screen Constructional & Electrical Data
Conductor			Insulation				Metallic Screen		Outer Jacket
Nominal Area	Max. DC Resis- tance at 20 °C	Max. AC Resis- tance at 90 °C	Nominal Thickness of Insulation Layers			Electro- static Capaci- tance	Nominal Area of Copper Wires(1)	Short Circuit Capacity (1 Sec.)(2)	Nominal Thick- ness	Approx. Overall Diameter	Approx. Overall Weight
Nominal Area	Max. DC Resis- tance at 20 °C	Max. AC Resis- tance at 90 °C	Cond. Screen	XLPE	Ins. Screen	Electro- static Capaci- tance	Nominal Area of Copper Wires(1)	Short Circuit Capacity (1 Sec.)(2)	Nominal Thick- ness	Approx. Overall Diameter	Approx. Overall Weight
mm2	Ω / km	Ω / km	mm	mm	mm	μF / km	mm2	kA	mm	mm	kg / m
300 R	0.0601	0.0786	1.2	18	1.2	0.148	95	15.3	4	75.3	7.23
400 R	0.047	0.0625	1.2	18	1.2	0.159	95	15.3	4	77.9	8.2
500 R	0.0366	0.0501	1.2	18	1.2	0.173	95	15.3	4	81.3	9.51
630 R	0.0283	0.0404	1.2	18	1.2	0.187	95	15.3	4	84.8	10.96
800 R	0.0221	0.0336	1.2	18	1.2	0.203	95	15.3	4	88.8	12.95
1000 S	0.0176	0.0239	1.5	18	1.2	0.24	95	15.3	4	98.1	15.55
1200 S	0.0151	0.021	1.5	18	1.2	0.256	95	15.3	4.5	103.1	17.86
1400 S	0.0129	0.0184	1.5	18	1.2	0.264	95	15.3	4.5	105.1	19.86
1600 S	0.0113	0.0167	1.5	18	1.2	0.28	95	15.3	4.5	109.1	21.63
2000 S	0.009	0.0142	1.5	18	1.2	0.299	95	15.3	4.5	114.1	25.37
2500 S	0.0072	0.0124	1.5	18	1.2	0.331	95	15.3	4.5	122.1	31.01

76/132 (145) kV High Voltage Power Cable with Lead Sheath Constructional & Electrical Data
Conductor			Insulation				Metallic Screen		Outer Jacket
Nominal Area	Max. DC Resis- tance at 20 °C	Max. AC Resis- tance at 90 °C	Nominal Thickness of Insulation Layers			Electro- static Capaci- tance	Nominal Thickness of Lead Sheath(1)	Short Circuit Capacity (1 Sec.)(2)	Nominal Thick- ness	Approx. Overall Diameter	Approx. Overall Weight
Nominal Area	Max. DC Resis- tance at 20 °C	Max. AC Resis- tance at 90 °C	Cond. Screen	XLPE	Ins. Screen	Electro- static Capaci- tance	Nominal Thickness of Lead Sheath(1)	Short Circuit Capacity (1 Sec.)(2)	Nominal Thick- ness	Approx. Overall Diameter	Approx. Overall Weight
mm2	Ω / km	Ω / km	mm	mm	mm	μF / km	mm	kA	mm	mm	kg / m
300 R	0.0601	0.0786	1.2	18	1.2	0.148	2.6	12.7	4	76.1	12.18
400 R	0.047	0.0625	1.2	18	1.2	0.159	2.7	13.7	4	78.9	13.63
500 R	0.0366	0.05	1.2	18	1.2	0.173	2.8	14.9	4	82.5	15.52
630 R	0.0283	0.0404	1.2	18	1.2	0.187	2.9	16.1	4	86.2	17.61
800 R	0.0221	0.0335	1.2	18	1.2	0.203	3	17.5	4	90.4	20.29
1000 S	0.0176	0.0239	1.5	18	1.2	0.24	3.1	20.2	4	99.8	24.17
1200 S	0.0151	0.021	1.5	18	1.2	0.256	3.2	21.8	4.5	105	27.26
1400 S	0.0129	0.0184	1.5	18	1.2	0.264	3.3	22.9	4.5	107.2	29.83
1600 S	0.0113	0.0166	1.5	18	1.2	0.28	3.4	24.6	4.5	111.4	32.43
2000 S	0.009	0.0142	1.5	18	1.2	0.299	3.6	27.3	4.5	116.8	37.53
2500 S	0.0072	0.0123	1.5	18	1.2	0.331	3.7	30.2	4.5	125	44.58

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