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What is the voltage level of electrical lines running along the road sides with RCC pole?
66 kV
33 kV
11 kV
400 V
11 kV
Distribution lines that run along road sides for primary distribution in India commonly operate at 11 kV. These lines utilize Reinforced Cement Concrete (RCC) or Prestressed Cement Concrete (PCC) poles to support the conductors, insulators, and associated hardware for distributing power to local distribution transformers.
Distribution lines that run along road sides for primary distribution in India commonly operate at 11 kV. These lines utilize Reinforced Cement Concrete (RCC) or Prestressed Cement Concrete (PCC) poles to support the conductors, insulators, and associated hardware for distributing power to local distribution transformers.
VlineтАЛ=3тАЛVphaseтАЛ тАФ Relationship in star-connected distribution systems
In the standard electrical power distribution hierarchy, power is stepped down from 33 kV or 66 kV sub-transmission levels to 11 kV at a distribution substation. This 11 kV voltage is the standard primary distribution level, which is then carried overhead using poles to local areas, where pole-mounted or pad-mounted distribution transformers step it down to the utilization voltage of 400 V (three-phase) or 230 V (single-phase).
RCC poles are preferred for 11 kV lines due to their long life and minimal maintenance.
11 kV is the standard primary distribution voltage in most parts of India.
Roadside distribution lines are typically constructed using vertical or triangular conductor configurations.
The spacing between poles for 11 kV lines is generally 50 to 80 meters depending on conductor size.
Higher efficiency for distributing power over medium distances.
Lower current compared to 400V, reducing I2R line losses.
Requires high-voltage insulators.
Safety hazards compared to low-voltage lines due to higher potential.
Primary distribution in residential and commercial areas.
Feeding distribution transformers in urban and rural locations.
400 V is the secondary distribution voltage (LV) used directly by consumers.
33 kV and 66 kV are classified as sub-transmission voltages, typically not used for roadside distribution poles.
RCC poles have replaced older wooden poles for durability and weather resistance.
C is correct тАФ 11 kV is the standard primary distribution voltage level commonly used for overhead lines supported by RCC poles along roadsides.
Always remember the hierarchy: Transmission (220/400 kV) тЖТ Sub-transmission (33/66 kV) тЖТ Primary Distribution (11 kV) тЖТ Secondary Distribution (400 V/230 V).