Insulation Level. Type of Insulation. Underground ( Direct or in ducts) Air Frequency. Load To be carried. Voltage Drop. Length of Line. Chemical or physical properties of Soil. Max and min ambient air temperatures and soil temperature. Magnitude and duration of possible overload. Magnitude and duration of short circuit current. Specifications and Requirement to be met. Standards and Specifications Cables described in this catalogue are standard types, and their performance has been proved in operation. Construction and tests are in accordance with recommendations of IEC and Ghana Standards Authority specifications where applicable. Cables in accordance to other standards can be manufactured upon customer’s request. Electrical Properties and Metals Used for Cables Metal Relative Conductivity Electrical Resistivity Temperature Coefficient of Copper 100% at 20 °C ohm .m(10¯⁸) Resistance per °C Copper (Annealed) 100 1.7241 0.00393 97 1.777 0.00393 Copper (Hard drawn) Tinned Copper 95-97 1.741-1.814 0.00393 Aluminum 61 2.8264 Lead 8 21.40 0.00400 Physical Properties Property Unit Copper Aluminum Lead Density at 20 °C Kg/m³ 8890.0 2703.0 11340.00 Coeff. thermal expansion Per X10¯⁶ 17.0 23.0 29.00 ⁰C Melting point 1083.0 659.0 327.00 ⁰C Thermal conductivity W/cm⁰C 3.8 2.4 0.34 Ultimate tensile strength Mn/m² 225.0 70-90 PROPERTIES OF CONDUCTOR MATERIALS Properties Units Hard Aluminum Galvanized Aluminum Hard drawn Aluminum Alloy Steel Clad Steel Copper Conductivity % IACS 61 53 9 20 100 Resistance Ohm x mm²/km 28.264 32.5 192 84.8 17.241 Temperature co-efficient of - 0,0036 0,0054 0,0051 0,00381 resistance at 20⁰ C Co-effient of linear expansion x10⁻⁶ 23 23 11.5 12.96 17 ⁰C Density of 20⁰ C Kg/m³ 2.703 2700 = 8890 Linear Mass Kg/mm²km 2.703 2.7 7.8 6.59 8.89 Ultimate tensile Stress N/mm² 160-200 295 1320-1344 1100-1344 414
Insulation Level. Type of Insulation. Underground ( Direct or in ducts) Air Frequency. Load To be carried. Voltage Drop. Length of Line. Chemical or physical properties of Soil. Max and min ambient air temperatures and soil temperature. Magnitude and duration of possible overload. Magnitude and duration of short circuit current. Specifications and Requirement to be met. Standards and Specifications Cables described in this catalogue are standard types, and their performance has been proved in operation. Construction and tests are in accordance with recommendations of IEC and Ghana Standards Authority specifications where applicable. Cables in accordance to other standards can be manufactured upon customer’s request. Electrical Properties and Metals Used for Cables Metal Relative Conductivity Copper 100% Electrical Resistivity at 20 °C ohm .m(10¯⁸) Temperature Coefficient of Resistance per °C Copper (Annealed) 100 1.7241 0.00393 Copper (Hard drawn) 97 1.777 0.00393 Tinned Copper 95-97 1.741-1.814 0.00393 Aluminum 61 2.8264 Lead 8 21.40 0.00400 Physical Properties Property Unit Copper Aluminum Lead Density at 20 °C Kg/m³ 8890.0 2703.0 11340.00 Coeff. thermal expansion Per ⁰C X10¯⁶ 17.0 23.0 29.00 Melting point ⁰C 1083.0 659.0 327.00 Thermal conductivity W/cm⁰C 3.8 2.4 0.34 Ultimate tensile strength Mn/m² 225.0 70-90 PROPERTIES OF CONDUCTOR MATERIALS Properties Units Hard Aluminum Aluminum Alloy Galvanized Steel Aluminum Clad Steel Hard drawn Copper Conductivity % IACS 61 53 9 20 100 Resistance Ohm x mm²/km 28.264 32.5 192 84.8 17.241 Temperature co-efficient of resistance at 20⁰ C - 0,0036 0,0054 0,0051 0,00381 Co-effient of linear expansion x10⁻⁶ ⁰C 23 23 11.5 12.96 17 Density of 20⁰ C Kg/m³ 2.703 2700 = 8890 Linear Mass Kg/mm²km 2.703 2.7 7.8 6.59 8.89 Ultimate tensile Stress N/mm² 160-200 295 1320-1344 1100-1344 414
Catalogue-2014.docx