Surprisingly the letters for resistance, reactance, and impedance are the same in English and German. i think voltage (German U) and current (German I) are different. Power is P, apparent power (U*I, given in VA) is S and reactive power (unit var) is Q. Inductive reactance is XL and capacitive reactance is XC (subscript L and C).
Back to earthing arrangements... for some reason the voltage in Austria is 65V AC, not 50.
Voltage operated ELCB - German FU (Fault voltage interruptor)
