Join 60,000+ competitive exam aspirants
or with email
Your Cart
Subtotal₹0
Total₹0
Examoogle • User • info@examoogle.com • EE-2024-8821
Chapter 1 of 12 • Page 1 of 248🔒 Protected PDF • Watermarked
Join 60,000+ competitive exam aspirants
The operating voltage of super tension cable is
– 11 kV 1 – 11kV
11 – 33 kV 11 – 33kV
33 – 66 kV 33 – 66kV
Above 66 kV Above 66kV
11 – 33 kV
11 – 33kV
Cables used in power transmission are categorized based on their operating voltage levels. Super tension cables are specifically designed for the voltage range of 11 kV to 33 kV, bridging the gap between low voltage and extra-high voltage cables.
Cables used in power transmission are categorized based on their operating voltage levels. Super tension cables are specifically designed for the voltage range of 11 kV to 33 kV, bridging the gap between low voltage and extra-high voltage cables.
Vop=11 to 33 kV — Operating voltage range for Super Tension cables
The insulation of power cables is graded based on the operating voltage to prevent dielectric breakdown and corona discharge. Super tension cables use impregnated paper insulation with specialized sheathing to maintain integrity at these medium-high voltage levels, ensuring reliable operation without insulation failure due to high electrical stress.
Cables are classified by voltage: Low tension (up to 1 kV), High tension (11 kV), Super tension (22-33 kV), Extra high tension (66 kV), and Extra super voltage (132 kV and above).
Super tension cables often employ belted type construction or screened construction depending on specific dielectric stress requirements.
Proper insulation thickness is critical as voltage increases to keep the electric field stress within the dielectric strength limit of the material.
Improved power handling capacity compared to low voltage cables
Suitable for primary distribution networks
Higher insulation cost compared to LT cables
Requires more sophisticated jointing and termination techniques
Primary distribution substations
Urban power distribution networks
Industrial plant high-power supply feeders
The classification provided follows the standard Indian standard for underground power cables used in sub-transmission and distribution.
Option C (33-66 kV) generally falls under Extra High Tension (EHT) category.
Option D (Above 66 kV) belongs to Extra Super Voltage (ESV) category.
B is correct — Super tension cables are defined by the standard operating voltage range of 11 kV to 33 kV.
Always remember the classification sequence for cables: LT (1kV) -> HT (11kV) -> ST (33kV) -> EHT (66kV) -> ESV (132kV+). This order is frequently tested in state engineering exams.