Figure 289: Connection of the current transformers of Type 1. The connected phase
currents and the neutral current have opposite directions at an external earth-fault
situation. Both earthings are inside the area to be protected.
Figure 290: Connection of the current transformers of Type 1. The connected phase
currents and the neutral current have opposite directions at an external earth-fault
situation. Both earthings are outside the area to be protected.
Protection functions
1MRS757644 H
564 620 series
Technical Manual
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