GE G30 Instruction Manual page 523

CHAPTER 8: APPLICATION OF SETTINGS OVERVIEW
Figure 8-3: Typical wiring, no in-zone transformer
The two sources are configured as follows.
8
The G30 requires the use of the transformer windings settings for the differential element, even if the differential is applied
only as a stator differential for the generator. These settings ensure that the differential element operates with the correct
phase shifts, and applies the correct magnitude compensation. Loss of excitation and reverse power can be assigned to
either source. Since there is no transformer involved, the phase shift to enter is the –180° phase shift due to the CT
polarities and connections.
G30 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL 8-5