Answer the following ten questions in two to three sentences each, based on the information provided in IEC 183.

1. What is the primary purpose and scope of the IEC 183 standard?
2. Define the terms Uo and U as they relate to high-voltage cables and their accessories.
3. Explain the significance of Um and how it is defined within the standard.
4. What is the key change introduced by Amendment 1 (1990) to the original 1984 publication?
5. Describe the three system categories (A, B, and C) used to classify cable insulation levels.
6. According to the standard, what is a “Lightning overvoltage” and why is it a consideration in cable selection?
7. List at least four distinct “Operating conditions” that must be specified to determine the appropriate design of a cable for a particular project.
8. When selecting the conductor size, what three primary factors must be taken into account?
9. How does altitude affect cable terminations, and what measures are required for installations above 1000 meters?
10. Using the updated Table I from Amendment 1, what is the “Highest voltage for equipment” (Um) for a cable with a “Rated voltage” (Uo/U) of 36/66 kV?