#### How to use this calculator?

1. Put data from open circuit test.

2. Put data from short circuit test.

3. Hit the calculate button.

**Result: **

1.Elements of the excitation Rc, Xc

2. Working currrent component Iw

3 Magnatizing current component Im

4. Equivalent serise elements Req, Xeq

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#### Find the equivalent circuit from short circuit and open circuit test data.

__Calculation process:__

**From the open circuit test data**

θoc = cos¯^{1} Poc/(Voc*Ioc)

**The excitation admitance is Ye** = (Ioc/Voc) ∠-θoc

Ye = B + G

**Elements of the excitation Rc** = 1/B, Xm = 1/G

**Working currrent component Iw** = Ioc*cos(θoc)

**Magnatizing current component Im** = Ioc*sin(θoc)

**From the short circuit test data**

θoc = cos¯^{1} Psc/(Vsc*Isc)

**Equivalent serise impedance** Zse = (Vsc/Isc) ∠-θsc

Zse = Req + jXeq

**The series elements are **Req, Xeq