7-16 Maintenance and Testing Date Code 20011026
SEL-321/321-1 Instruction Manual
Three Voltage Source and One Current Source Connections
Figure 7.6 and Figure 7.7 show connections to use when three voltage sources and a single
current source are available. Phase-ground faults may be simulated using the connections shown
in Figure 7.6. Phase-to-phase faults may be simulated using the connections shown in Figure 7.7.
Figure 7.6: Phase-to-Ground Fault Test Connections Using a Single Current Source
Figure 7.7: Phase-to-Phase Fault Test Connections Using a Single Current Source
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