Sel SEL-351A - 50 GFP-Forward Directional Residual Ground Current Pickup; 50 GRP-Reverse Directional Residual Ground Current Pickup; 50 GFP and 50 GRP Set Automatically; a0-Positive-Sequence Current Restraint Factor, I0;I1

4-32 Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20010307
SEL-351A Instruction Manual
50GFP—Forward Directional Residual Ground Current Pickup
50GRP—Reverse Directional Residual Ground Current Pickup
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50GFP and 50GRP Set Automatically
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a0—Positive-Sequence Current Restraint Factor, I
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