急問 !! AC變壓220v 變24vac for 1500w 要幾多kva 既牛 ?
回答 (3)
2007-01-13 5:32 am
✔ 最佳答案
若1500W是24VAC, 則計算應如下:24VAC則輸出電流 = 1500 W/24 V = 62.5A
變壓器的效率通常是0.8, 所以輸出要1500W, 它的KVA=1500/0.8 = 1875KVA 完整為2000KVA.
2007-01-13 2:45 am
Dear friend,
By simple calculation as below,
1500W / 220V = 6.82A
neglected loss, the apprent power wil be:
24V x 6.82A = 163.68VA, a.c. or 0.1637Kva.
By simple calculation as below,
1500W / 220V = 6.82A
neglected loss, the apprent power wil be:
24V x 6.82A = 163.68VA, a.c. or 0.1637Kva.
參考: me
2007-01-12 11:47 am
去鴨察街走一轉就知道啦!
收錄日期: 2021-04-12 18:32:35
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070111000051KK05081