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33kV XLPE Insulated Cable Specs

The document provides technical specifications for a D-28 insulated cable with a voltage grade of 33 kV and a cross-sectional area of 280.96 mm². It details the materials used, including hard drawn aluminum and galvanized steel, as well as electrical and mechanical characteristics such as maximum operating temperatures and current ratings. The cable features a black XLPE insulation with specific dimensions and resistance values, and is designed for various operational conditions.

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jamil
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55 views1 page

33kV XLPE Insulated Cable Specs

The document provides technical specifications for a D-28 insulated cable with a voltage grade of 33 kV and a cross-sectional area of 280.96 mm². It details the materials used, including hard drawn aluminum and galvanized steel, as well as electrical and mechanical characteristics such as maximum operating temperatures and current ratings. The cable features a black XLPE insulation with specific dimensions and resistance values, and is designed for various operational conditions.

Uploaded by

jamil
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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1x400 RM 2xY 1.8/3.0 (3.

6) KV Cable
Techinal Specification of D-28 (Insulated)

TYPE & SIZE OF CABLE


D-28 (Insulated)

VOLTAGE GRADE
33 kV
RELEVANT
BDS 1037, ASTM B 232, B 498, B 230 & B 233

TECHNICAL DATA
Cross-sectional area of conductor, nominal 280.96 mm²
No. of core 1 no.
Material Hard Drawn Aluminium & Galv. Steel
Conductor Maximum conductor temperature in normal operation 90 ⁰ C
Maximum short circuit temperature 250⁰ C
Shape of conductor Circular Stranded
No. & nominal diameter of Wire 26/3.44 & 7/2.67 nos./mm
Nominal diameter of conductor 21.78 mm
Material XLPE
Color of insulation Black
Insulation Thickness, nominal 4.5 mm
Thickness, minimum 3.95 mm
Overall diameter (D), approximate 30.78 mm
Electrical Characteristics Other Characteristics
DC Resistance of conductor at 20⁰C, maximum 0.1119 Ω/km Minimum bending radius 20 x D
Insulation Resistance (meggar) at ambient temperature 5+ GΩ Operating temperature -15⁰C to 90⁰C
A.C High Voltage test for 05 minutes 30.45 kV Weight of cable, approximate ― kg/km
o
Current Rating at 30 C 455 A Packing length/Drum As per party requirement
Mechanical Characteristics Endorsement Design By
Breaking Load of Conductor 8870 Kgf Jamil Sharif, Engineer (QC)

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