如何将千伏安(kVA)表示的视在功率转换为 电流 安培(A)表示的 安培(A).
您可以根据千伏安和 伏特, but you can't convert kilovolt-amps to amps s安培(A)表示的ce kilovolt-amps and amps units do not measure the same quantity.
The phase current I 安培(A)表示的 amps is equal to 1000 times the apparent power S in kilovolt-amps, divided by the RMS voltage V in 伏特:
I(A) = 1000 × S(kVA) / V(V)
So amps are equal to 1000 times kilovolt-amps divided by 伏特.
amps = 1000 × kVA / 伏特
或
A = 1000 kVA / V
Question: What is the phase current 安培(A)表示的 amps when the apparent power is 3 kVA and the RMS voltage supply is 110 伏特
解答：
I = 1000 × 3kVA / 110V = 27.27A
The phase current I 安培(A)表示的 amps is equal to 1000 times the apparent power S in kilovolt-amps, divided by the square root of 3 times the line to line RMS voltage V in 伏特:
I(A) = 1000 × S(kVA) / (3 × VL-L(V) )
So amps are equal to 1000 times kilovolt-amps divided by the square root of 3 times 伏特.
安培 = 1000 × kVA / (3 × 伏特)
或
A = 1000 kVA / (3 × V)
Question: What is the phase current 安培(A)表示的 amps when the apparent power is 3 kVA and the line to line RMS voltage supply is 190 伏特
解答：
I = 1000 × 3kVA / (3 × 190V) = 9.116A
The phase current I 安培(A)表示的 amps is equal to 1000 times the apparent power S in kilovolt-amps, divided by 3 times the line to line RMS voltage V in 伏特:
I(A) = 1000 × S(kVA) / (3 × VL-N(V) )
So amps are equal to 1000 times kilovolt-amps divided by 3 times 伏特.
安培 = 1000 × kVA / (3 × 伏特)
或
A = 1000 kVA / (3 × V)
Question: What is the phase current 安培(A)表示的 amps when the apparent power is 3 kVA and the line to neutral RMS voltage supply is 120 伏特
解答：
I = 1000 × 3kVA / (3 × 120V) = 8.333A
