0
Transformers are rated in KVA and MVA. The load determines the power factor. It is obvious to multiply the VA with cosine angle to get Watts or Kilo watts. While manufacturing the transformer or at its installation we don't know the load power factor. Hence we could not determine the rating in Watts or kilo watts or Mega watts. We simply note it as VA or KVA.
S.Dhanabal
What else can I help you with?
What is the capacity of power transformer for 132kva substation?
A 132 kV substation is normally called a grid substation. It would normally use two or more 132/33 kV transformers rated at 90 MVA, or two or more 132/11 kV transformers rated at 30 MVA.
A transmission line has 30 megawatts and 40 megavars what is the megavolt amps load on the line?
By definition, MVA is equivalent to the vector sum of MW and MVAR: MVA^2 = MW^2 + MVAR^2 = 2500 MVA = 50
How do you convert MVA into MW?
You would have to know the Power Factor, normally designated PF. MVA x PF = MW. If the PF is unity then MVA = MW. A PF of UNITY suggest the load is purely resistive with neither capacitive nor inductive components in the load or source. Of course this can mean such components have been balanced artificially.
How much power in a 15000 kva transformer?
The power in a 15 MVA (15000 KVA) transformer depends on the power factor. You did not specify the power factor, so I will assume a power factor of 0.92. Simply multiply MVA by PF and you get 13.8 MW.
Does a transformer convert the current from 240 volts to 120 volt?
Transformers are rated in KVA or VA (volt-amps). They transform voltages from one value to another. The current in a transformer is inverse to the voltage. This is why transformers are rated in KVA and smaller ones in VA.
How is a 100 MVA transformer cooled?
Large transformers are filled with oil which circulates to a radiator to get rid of excess heat. A 100 MVA transformer should waste about 1 MW of power on full load, 0.5 MW on no load.
What does mva stand for in the turbo generator field?
There are two concerns here regarding loading on transformers of this size. First is the difference between MVA and MW. MW is just real power -- watts. MVA is total power which includes real power (MW) and reactive power (MVAR).--- http://en.allexperts.com/q/Electric-Power-Utilities-2405/operation-limit-oof-power.htm
What is the capacity of power transformer for 132kva substation?
A 132 kV substation is normally called a grid substation. It would normally use two or more 132/33 kV transformers rated at 90 MVA, or two or more 132/11 kV transformers rated at 30 MVA.
What does mva mean in electrical terms?
MVA is the apparent power. MVA=( MW+ MVAr)1/2
How many megawatts is 55 mva?
To convert megavolt-amperes (MVA) to megawatts (MW), you typically use the formula: MW = MVA × Power Factor. If the power factor is not specified, a common assumption is 1 (for purely resistive loads), which would mean 55 MVA equals 55 MW. However, if the power factor is less than 1, the MW value would be lower than 55.
Is 2.8 MVA equal to 2.8 MW?
No, 2.8 MVA (megavolt-amperes) is not equal to 2.8 MW (megawatts). MVA measures apparent power, while MW measures real power. The relationship between them depends on the power factor of the system, which indicates how effectively the power is being used. If the power factor is less than 1, the real power (MW) will be less than the apparent power (MVA).
A transmission line has 30 megawatts and 40 megavars what is the megavolt amps load on the line?
By definition, MVA is equivalent to the vector sum of MW and MVAR: MVA^2 = MW^2 + MVAR^2 = 2500 MVA = 50
How do you convert mw to mva?
You would have to know the Power Factor, normally designated PF. MVA x PF = MW. If the PF is unity then MVA = MW. A PF of UNITY suggest the load is purely resistive with neither capacitive nor inductive components in the load or source. Of course this can mean such components have been balanced artificially.
A transmission line has 30 mw and 40 mvar flowing what is the mva flow on the circuit?
MVA= square root of (MW2 + MVAR2 )
What is mva?
In electrical engineering it can be millivolt amperes, unless it's MVA then it is megavolt amperes. Such as in the use of large transformers.
How do you calculate MVAR with mw and mva?
mw/mva=power factor reactive power(Q)=I2XL or E2/XL where XL= REACTANCE apparent power = square root of (MW2 + MVAR2 )
What is fullform of MVA?
milli volt amperes, unless it's MVA then it is Mega Volt Amperes. Such as in the use of large transformers
