Earthing Module производства Siemens

Ground-fault modules

For direct measurement of the ground-fault current, e.g. in the neutral point of the transformer, a 1200 A/1 A current transformer, class 1, is required. The internal load of the SENTRON 3WL is 0.11 Ω.If the ground-fault current is to be determined using the vectorial sum of the phases, a transformer must be installed in the neutral conductor.