VAMP 140 - 3 Application Examples; Overcurrent, Earth-Fault and Phase Discontinuity Protection of an Overhead Line Feeder

VAMP 140 Overcurrent and earth-fault relay
Technical description
VAMP Ltd
26
Vamp 24h support phone +358 (0)40 573 6316 VM140.EN011
3. Application examples
3.1. Overcurrent, earth-fault and phase
discontinuity protection of an
overhead line feeder
Figure 3.1-1 Three-phase overcurrent protection, earth-fault protection and
phase discontinuity protection of an overhead line feeder. The earth-fault
current is measured with a residual current connection of the current
transformers. The analog mA output can be used to show the load current of
one of the phases. The signal can be wired to a local meter or to an
automation system