Figure 55: Offset Mho Characteristics - Voltage Domain - GE MiCOM P40 Agile Technical Manual

Single breaker current differential (with distance)

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Figure 55: Offset mho characteristics – voltage domain

is the replica forward reach and Z'

With mutual compensation applied:

If the healthy phase currents are much less than the current of the faulty phase, then the neutral current is

approximately the same as the phase current, and the terms can be simplified as follows:

If the healthy phase currents are much less than the current of the faulty phase, and mutual current compensation

is not applied, then these terms can be simplified as follows:

So, as with the Directional Self-Polarized Mho characteristic for earth-faults, the Z

characteristic becomes static.

P54x1i-TM-EN-1

is the replica reverse reach.

Chapter 7 - Distance Protection

plane representation of the

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