Transformer does not convert MVA to KV.
MVA is unit of power, where as KV is unit of Voltage. Transformer converts voltgae. Step up or Step down.
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.
It depends on the design of the transformer but 1 MVA is a common size for an 11 kV / 415 v three-phase transformer.
It depends what you mean by an '11-kV transformer'; do you mean a primary transformer (33/11-kV transformer) or a distribution transformer (11-kV/400-230-V transformer). Differential protection IS offered on primary transformers.
VA or KVA or MVA
Ece 63 mva.
The number of amps in 1 MVA (megavolt-ampere) will depend on the voltage of the system. To calculate amperes, you can use the formula: Amperes = MVA / (sqrt(3) x kV), where kV is the voltage of the system in kilovolts.
800 MVA
I have a project now, a 6 MVA 13.8KV/6.6KV transformer costs about $16,000.
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.
The product of the secondary rated current and the secondary rated voltage will give you the rated V.A of the 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.
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