The reason behind my question is that i am looking into specifying a transformer which happens to be 11kV/433V. I understand that the normal LV voltage for the UK is 400/230. So i am looking into shifting the taps.
I would like to calculate how much the impedance changes and perhaps relate this with the overall permitted Volt Drop in the private consumer installation for a private supply in accordance with the wiring regs at full load.
Priority here is the impedance calculation as it has a direct effect on the fault levels. Part of the installation is existing and I need to examine the impact.
The reason behind my question is that i am looking into specifying a transformer which happens to be 11kV/433V. I understand that the normal LV voltage for the UK is 400/230. So i am looking into shifting the taps.
I would like to calculate how much the impedance changes and perhaps relate this with the overall permitted Volt Drop in the private consumer installation for a private supply in accordance with the wiring regs at full load.
Priority here is the impedance calculation as it has a direct effect on the fault levels. Part of the installation is existing and I need to examine the impact.
