Universal Cables Interview Questions, Process, and Tips

220 kV thickness refers to the insulation thickness of a 220 kilovolt electrical cable.

• 220 kV thickness is the thickness of the insulation layer surrounding a 220 kilovolt electrical cable.

• It is important for ensuring the safety and efficiency of the cable's operation.

• The thickness can vary depending on the specific requirements of the cable and the environment in which it will be used.

The diameter of a 2500 sqmm conductor is dependent on the shape of the conductor.

• The diameter of a round conductor can be calculated using the formula: diameter = sqrt(4 * area / pi)

• For a square conductor, the diameter would be the length of one side of the square

• For a rectangular conductor, the diameter would be the diagonal of the rectangle

400 kV is cooled using insulating oil or gas.

• Insulating oil such as mineral oil or synthetic oil is commonly used to cool 400 kV equipment.

• In some cases, sulfur hexafluoride (SF6) gas is used as a cooling medium for high voltage equipment.

• Cooling systems may also include fans or heat exchangers to dissipate heat generated during operation.

Sulfur hexafluoride is commonly used in 400 kV electrical systems.

• Sulfur hexafluoride is a colorless, odorless, non-toxic gas.

• It is used as an insulating gas in high voltage electrical equipment.

• Sulfur hexafluoride has a high dielectric strength, making it ideal for use in 400 kV systems.