What is the need of 33 11kV substation?
33kV to 11kV transformers steps down the the voltage to a safe level, which is then distributed via 11kV feeders to homes and businesses. 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.
Which type of fuse is used in 33 11kV substation?
MV-HV fuses
MV-HV fuses suitable for 3.3kV, 11kV and up to 33/36kV transformer applications in accordance with IEC specification.
How many substations does a kV have?
Usually for economy of construction the collector system operates around 35 kV, although some collector systems are 12 kV, and the collector substation steps up voltage to a transmission voltage for the grid.
What is the meaning of 33 11kV?
Thus, when a substation is of rating 66/11 kV, means substation has been designed to receive 80 MVA on 66 kV and it will distribute the received power on 11 kV. Again, substation of rating 33/11kV means, the substation has been designed to receive 5 MVA of power at 33 kV and it will distribute the same on 11 kV.
What is 11kV voltage?
For instance, in an 11kV three-phase system, the voltage between any two live conductors gives a line voltage of 11kV while the voltage between any live conductor and neutral (or earth) gives a phase voltage of 6.35kV.
Why 11kv 22kv 33kv 66kv 132kv?
The reason is something historical. In olden days when the electricity becomes popular, the people had a misconception that in the transmission line there would be a voltage loss of around 10%. So in order to get 100 at the load point they started sending 110 from supply side. This is the reason.
Can you build next to a substation?
First and foremost: the non-EMF issues If you are building near an overhead line, you must preserve the voltage safety clearance distances, both for the finished development and during construction (e.g. for scaffolding or cranes). If the development is near a substation you must be very careful about buried cables.
Where are The 11kV substations located in India?
The 11KV lines runs along the important road of the city. The secondary substations are also of outdoor type. 4.1.1.1.3 DISTRIBUTION SUBSTATION These substations are located near the consumer’s localities and step down to 400V, 3-phase, 4-wire for supplying to the consumers.
Where is main bus 33kV power substation located?
The main bus 33KV is connected to grid located at Sector-25, INDIRANAGAR, LUCKNOW. Now the transmission line first parallel connected with lightning arrester to diverge surge, followed by CVT connected parallel. CVT measures voltage and steeps down at 110V.
How many MVA does a 11 kV substation carry?
It is used where continuity of supply is the priority factor and thus large investment may be warranted. Normally a primary distribution line or feeder is designed to carry a load of 1-4 MVA depending on the feeder length, so the number of Feeders emanating from a secondary substation at 11 kV is 3 or more.
What kind of transformer is needed for 33kV substation?
To step down the 33kV primary voltage to 11kV suitable for distribution purpose. One 33kV/0.415 auxiliary transformer was also needed to supply the substation with reliable AC power. Circuit breakers were needed so as to disconnect and isolate the faulted section. Sulphur-hexa-fluoride (SF6) circuit breakers were chosen.