GE D30D00HCHF8AH6AM6BP8BX7A Instruction Manual page 437

Ur series line distance protection system
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9 THEORY OF OPERATION
9.3 GROUND DIRECTIONAL OVERCURRENT
I_op = |I_2| – |I_1| / 8 = 1.003 A > 0.25 A.
The overcurrent unit will pickup and the element will operate in the forward direction.
9
GE Multilin
D30 Line Distance Protection System
9-17

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