m.s.j said:It can bear 328 amp current in input side(440 V) and 656 amps in output(220V).
S=1.73*V*I
S input=S output
I probably should wait for m.s.j to answer here. S = 3 phase VA (volt-amps) = V*I*sqrt(3). Sorry I didn't include the sqrt(3)=1.73 required in the equation since you were asking about 3 phase.neduet said:Sir
how can you calculate. you use S=VI
I totally missed that the OP said "three phase". Thanks for the sqrt(3).m.s.j said:It can bear 328 amp current in input side(440 V) and 656 amps in output(220V).
S=1.73*V*I
S input=S output
The transformer capacity of 250 kva stands for kilovolt-ampere, which is a unit used to measure the apparent power of a transformer. It indicates the maximum amount of power that the transformer can handle without exceeding its design limits.
The numbers 440 input and 220 output refer to the voltage levels that the transformer can handle. The input voltage is the amount of electricity that enters the transformer, while the output voltage is the amount of electricity that leaves the transformer. In this case, the transformer can handle an input voltage of 440 volts and an output voltage of 220 volts.
The transformer capacity is an important factor in determining the efficiency and stability of an electrical system. If the transformer capacity is too low, it can lead to overloading and cause power outages. On the other hand, if it is too high, it can result in excessive energy consumption and increased costs.
Yes, the transformer capacity can be increased or decreased by changing the number of windings in the transformer's coils. However, this process is complex and requires careful calculations and modifications to the transformer structure.
Apart from the transformer capacity, other factors that should be considered include the type of load (resistive, inductive or capacitive), the power factor, and the ambient temperature. These factors can affect the performance and efficiency of the transformer and should be taken into account when choosing the right transformer for a specific application.