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Question:

100kVA transformer can withstand much of the current? What is its formula?

100kVA transformer can withstand much of the current? What is its formula?

Answer:

For safety insurance, the current density is about 3.0, S = 144.34 / 3 = 50 (about) So take the 50 square cable can be.
For safety insurance, the current density is about 3.0, S = 144.34 / 3 = 50 (about) So take the 50 square cable can be.
Three-phase transformer: rated capacity S = √3 * rated voltage U (line voltage) * rated current I (line current) On the subject: S = 100KVA High pressure U1 = 10 KV I1 = S / (√3 * U1) = 5.77 A Low pressure U2 = 0.4 KV I2 = S / (√3 * U2) = 144.34 A

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