Single phase transformer 開路測試 及短路測試

開路測試 Open circuit test
所謂開路測試Open circuit test或者叫做No load test, 就係插著個火牛又唔駁Loading既意思

Vin係輸入電壓, Iin係輸入電流.
當副綫圈開路, 沒有電流會transfer去副綫圈. 所以輸入電流會全數停流在主綫圈.
core loss鐵損=(IR)^2 X R=Vin X (IR)
**無論副綫圈有駁/無駁電阻, 個火牛要work就一定會消耗左core loss

Open circult test就係要黎計core loss.



短路測試 Short circuit test
所謂短路測試Short circuit test, 就係插著個火牛,副綫圈short埋佢既意思

呢個情況, Iin會傾向全數流transfer去副線圈,因為core loss既電阻遠大於cuppor loss電阻.

shourt circuit test可以計到銅損cuppor loss