Date Code 20001006 Loss-of-Potential, Load Encroachment, and Directional Element Logic 4-15
SEL-351 Instruction Manual
Figure 4.9: Zero-Sequence Voltage-Polarized Directional Element for Neutral Ground and
Residual Ground Overcurrent Elements (see Note 2 Following Figure 4.6)
Courtesy of NationalSwitchgear.com
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