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If you are referring to an 11-kV underground cable, these are normally armoured and, in the case of older cables, have a lead sheath to prevent moisture ingress into the cable. The lead sheath and metal armour are earthed to ensure that, in the event of mechanical damage to the cable, there is a low-resistance path back to the source to sufficient earth-fault current flows in order to operate the circuit's protective system. Overhead lines do not normally have a separate earth conductor.
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How do you design an 11kv underground cable?
It is not necessary to design an 11 kv underground cable. There are several 11 kv underground cables already on the market. You can choose exactly which cable will fit best for your project and purchase it.
Calculation of restricted earth fault relay stabilizing resistor?
Requirement of REF protection for 50KVA 11KV/.4KV transforemr
How can calculate HT cable size for 500mva transformer rating and voltage 11kv?
500Mw at 11kv works out to 45000 aa bit big for any wire manufactured on this planetsuggest you go to a more practical voltage like 132,000VAnswerSince we are inevitably talking about a three-phase transformer, the line current is determined fromIL= rated apparent power / (1.732 x UL) = (500 x 106) / 1.732 x 11 x 103)...which works out at 26 244 A which, as the original answer suggests, is not a practical value for this combination.
What is the minimum value of Ir test in 11kv cables?
4444
Why the generating stations produce 11kv voltage and it step up to 33kv during transmission.. why we should not use 230volts to generated and can step up to 11kv.. why?
if we take 11kv /33kv yhe current produced will be less when compared to 230v/11kv.. the curent produced will be gerater than 1000amp or above so the winding of the transformers will damage because thier is no winding at present to with stand the huge amount of current by K.B.N.GANGADHAR sasi institute of technology and engineering
How do you design an 11kv underground cable?
It is not necessary to design an 11 kv underground cable. There are several 11 kv underground cables already on the market. You can choose exactly which cable will fit best for your project and purchase it.
Safe gap betweer 11kv conductor and earth?
A good rule of thumb is 1" per 1000V
What kind of wire transmit 11Kv power and is this different from those transmitting 415v power?
Insulation level is different between the cables.
Why is high voltage from 11kv onwards?
To be precise this kind of hi voltage is called distribution by power company. 11kv 16 kv that type of voltage. however transmission can be in the range of 5ookv. And you can see at tower from interstates lines
Calculation of restricted earth fault relay stabilizing resistor?
Requirement of REF protection for 50KVA 11KV/.4KV transforemr
Why normally Generator rating are between 11Kv to 22Kv?
Because if we use a generator of 33kv or higher then the radii must be of 2-3 meters that is not good. And also the area of the generator will be very high and losses and heat paameters will also be high. The main point is that we use 11kv generator at power plants and we have to step up the power to 220KV or 500KV etc. So we use 11kv or 22kv instead of 33 kv or higher.. By doing so we save the cost of area required, radii of rotor, and losses produced by higher power generators.
How much must be the distance between two conductors of 11kv line?
600mm is the distance between two conductors in 11kv line
What is the 11kv phase to earth voltage?
6350.8 volts AC rms. The phase to earth voltage is ( square root(3) ) x lower than the phase-phase voltage on a 3 phase system.
How can calculate HT cable size for 500mva transformer rating and voltage 11kv?
500Mw at 11kv works out to 45000 aa bit big for any wire manufactured on this planetsuggest you go to a more practical voltage like 132,000VAnswerSince we are inevitably talking about a three-phase transformer, the line current is determined fromIL= rated apparent power / (1.732 x UL) = (500 x 106) / 1.732 x 11 x 103)...which works out at 26 244 A which, as the original answer suggests, is not a practical value for this combination.
What is 11kv Switchgear?
switchgear is electrical equipment regulats from electricity
What is the minimum value of Ir test in 11kv cables?
4444
What happen when you use 6.6kV instead of 11kV surge arrester?
The 6.6KV device will conduct before the 11KV device, quite possibly even in normal operation. Don't use it this way!
