In order to make use of different earth fault locating procedures in various error situations, the freely programmable earth fault locating relay EOR-D, enables the selection and combination of the following procedures:

Transient earth procedure with qu algorithm
- error resistances up to several kOhms
- recognises re-igniting and intermittent earth faults

Harmonic procedure
- absolute value comparison
- analysis of the reactive power direction

Wattmetric procedure
- analysis of the active power direction
- active residual current increase

Pulse locating (detailed locating)