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.
How do I know if I have a 11 kV line?
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).
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.
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.
How much current is in 11kV line?
An 11 kV distribution circuit may carry 150 A in each of its three phases, thus transmitting a power of 3 MW. A 400 V final distribution circuit may carry 200 A in each of its three phases, thus transmitting a power of 150 kW.
What is a safe distance from power lines?
Work at a safe distance
This is the most important rule: Work at a safe distance from all power lines. The Occupational Safety and Health Administration (OSHA) requires that equipment be kept at least 10 feet away from power lines with voltages up to 50kV.
Why do we use 33kV?
Many people question why the voltage is as high as 33kV in the first place. The reason is that the higher the transmission voltage, the lower the transmission losses will be. … 33kV lines on the other hand involve much higher voltages and are used to distribute power from one small sub-station to another.