VDE 0413-11:2009
VDE 0413-11:2009 Electrical Safety In Low Voltage Distribution Systems Up To 1000 V A.c. And 1500 V D.c. - Equipment For Testing, Measuring Or Monitoring Of Protective Measures - Part 11: Effectiveness Of Residual Current Monitors (rcms) Type A And Type B In Tt, Tn And It Systems