The tests performed on oil-filled and gas-filled cables include:
- Impulse tests
- Load cycle tests
- Thermal stability test
- All of these
Correct answer: 4. All of these
Explanation:
The tests performed on oil-filled and gas-filled cables include:
- Impulse tests:
- Impulse tests are conducted to assess the ability of a cable to withstand transient overvoltages, such as lightning strikes. These tests help determine the insulation strength of the cable under sudden voltage surges.
- Load cycle tests:
- Load cycle tests involve subjecting the cable to varying electrical loads over time. These tests help evaluate the cable’s performance under different operating conditions and ensure its durability and reliability during normal operation.
- Thermal stability test:
- The thermal stability test is conducted to assess the ability of the cable insulation to withstand elevated temperatures. It helps determine the thermal characteristics of the cable under different conditions, ensuring that the cable can operate safely within specified temperature limits.
Therefore, the correct answer is “All of these.” These tests collectively provide a comprehensive evaluation of the performance and reliability of oil-filled and gas-filled cables under various operating conditions.