What is the difference between 11kV and 33kv transmission line?

The 11kV lines are used in residential areas and is what feeds the local transformers, which then distributes power to the buildings in the area. 33kV lines on the other hand involve much higher voltages and are used to distribute power from one small sub-station to another.

What is the safe distance from 33KV line?

Min. Safe Vertical Distance above Railway Track

Description of Clearance Distance (Min)
Stay wires 5.5 Meter
Conductors up to 33 kV 6.5 Meter
Conductors above 33 kV to 220 kV 7.5 Meter
Conductors above 220 kV. 8 Meter

Why do we use 11kV to 33KV?

It is cheaper to generate at a relative lower voltage and then step it up for transmission. Hence, most power generating plants are designed to operate at 11KV. To generate at 33KV, the size of the motor might be twice as large as the size of 11KV generator.

How can you tell if a transmission line is 11 kV?

11 KV Transmission line has double pole (See Pic) DP stands for double Pole or Duro Pole. They have one each disc insulator with each phase (In pic with red arrow, Red Yellow Blue RYB). These disc insulators can be found at DP or Tapping Channel. They have 3 Disc Insulator per phase RYB (Red 3, Yellow 3 and Blue 3).

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How far should a house be from power lines?

The strongest magnetic fields are usually emitted from high voltage transmission lines — the power lines on the big, tall metal towers. To be sure that you are reducing the exposure levels to 0.5 milligauss (mG) or less, a safety distance of 700 feet may be needed.

What is the current in 11kV line?

Take a 11kV/415v, 500KVA distribution system. Then maximum current on HV side = 500/{sqrt(3) * 11} = 26.24 A. maximum current on LV side = 500/{sqrt(3) * 0.415} = 695.6 A.

What is the meaning of 33 11 kV?

33 KV Sub-transmission system is feeding power supply to the HT Consumers and 33/11 KV Substations. 11 KV Primary Distribution system is emanating from 33/11 KV Substations feeding power supply to HT Consumers and 11000/440-220 volts Distribution transformers for supply to LT Three Phase and Single-Phase consumers.

Why transmission is done at High voltage?

The primary reason that power is transmitted at high voltages is to increase efficiency. As electricity is transmitted over long distances, there are inherent energy losses along the way. … The higher the voltage, the lower the current. The lower the current, the lower the resistance losses in the conductors.

Why do we use AC and not DC system in India?

Simply put, AC voltage is capable of converting voltage levels with just a transformer, making it far easier to transport across great distance than DC, whose conversion requires more complex electronic circuitry. Electric charge in AC periodically changes direction, causing the voltage level to reverse.

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