如何转换 电流 中的 安培(A) to apparent power 中的 kilovolt-amps (kVA).
您可以通过安培和 伏特, but you can't convert amps to kilovolt-amps s中的ce kilovolt-amps and amps units do not measure the same quantity.
The apparent power S 中的 kilovolt-amps is equal to phase current I in amps, times the RMS voltage V in 伏特, divided by 1000:
S(kVA) = I(A) × V(V) / 1000
因此千伏安等于 amps times 伏特 divided by 1000.
千伏安 = amps × 伏特 / 1000
或
kVA = A × V / 1000
What is the apparent power 中的 kVA when the phase current is 12A and the RMS voltage supply is 110V
解:
S = 12A × 110V / 1000 = 1.32kVA
The apparent power S 中的 kilovolt-amps (with balanced loads) is equal to square root of 3 times the phase current I in amps, times the line to line RMS voltage VL-L 中的 伏特, divided by 1000:
S(kVA) = 3 × I(A) × VL-L(V) / 1000
因此千伏安等于 3 times amps times 伏特 divided by 1000.
千伏安 = 3 × amps × 伏特 / 1000
或
kVA = 3 × A × V / 1000
What is the apparent power 中的 kVA when the phase current is 12A and the line to line RMS voltage supply is 190V
解:
S = 3 × 12A × 190V / 1000 = 3.949kVA
The apparent power S 中的 kilovolt-amps (with balanced loads) is equal to 3 times the phase current I in amps, times the line to neutral RMS voltage VL-N 中的 伏特, divided by 1000:
S(kVA) = 3 × I(A) × VL-N(V) / 1000
因此千伏安等于 3 times amps times 伏特 divided by 1000.
千伏安 = 3 × amps × 伏特 / 1000
或
kVA = 3 × A × V / 1000
What is the apparent power 中的 kVA when the phase current is 12A and the line to neutral RMS voltage supply is 120V
解:
S = 3 × 12A × 120V / 1000 = 4.32kVA