The typical impedance value is important to know because this is the impedance value of any electrical system under normal healthy condition. This values are round figure, the exact value is provided by the manufacturer with the equipments.
Zc = √L/C with, L: inductance per unit length, C: capacitance per unit length (not taking resistancies and
conductancies into account).
|Components||Typical impedance (ohms)|
|Insulated MV cable||25 – 50|
|Line 500/800 kV||270|
|132/220 kV||360 – 380|
|Transformer||500 – 50,000|
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