![]() Hence, the formula for secondary current I (S-A) in amps will be ![]() Hence for calculating primary current I (P-A) in Amps will be If you take the phase to neutral voltage V (L-N) in Volts means the current formula will be The full load current I (A) in amps is equal to 1000 times of transformer rating S (kVA) in kVA divided by the multiplication of root 3 times of line to line voltage V (V) in volts. Secondary current in Amps I (S-A) = S (kVA) *1000 / V (S-V)Ĭalculate the full load current of the single-phase transformer rating of 25kVA, 230 volts.įull load current in amps = 25 *1000 / 230 = 108.696 A Three-phase transformer current calculations If you want to calculate secondary current, then we need to take secondary voltage only Then the formula will be ![]() Primary current in Amps I (P-A) = S (kVA) * 1000 / V (P-V) If you want to calculate primary current we should consider primary voltage only, then the formula will be The transformer has two current one is primary current and another one is secondary current. If the transformer is rated in MVA means, the formula will be In general, the full load current is equal to Transformer full load current I (A) in amps for single-phase transformer is equal to 1000 times of transformer rating S (kVA) in kVA (kilo Volt-Amp) divided by the primary V (P-V) or secondary voltage V (S-V) in volts of the transformer. Single-phase transformer current calculations If the transformer has three-phase input means those transformers are called as a three-phase transformer. If the input of the transformer has single phase (R or Y or B) with neutral (N) means those transformers are called a single-phase transformer. Power equation can be classified into two types one is single-phase and another is three-phase. Transformer current can be calculated from two ways such as Mastering 3-Phase Power: The Formula, Calculations, and Examplesįull load current is nothing but a the maximum allowable current to the winding and which is used to design the protection system for the transformer.
0 Comments
Leave a Reply. |