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CHAPTER 6: SETPOINTS
Directional power (32)
350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 6-43: Wattmetric ground fault logic diagram
The Directional Power element responds to three-phase directional power and is designed
for reverse power (32REV) and low forward power (32FWD) applications for synchronous
machines or interconnections involving co-generation. The relay measures the three-
phase power from either a full set of wye-connected VTs or a full-set of delta-connected
VTs. In the latter case, the two-wattmeter method is used. The function has two
independent elements; typically one element is used for alarming and the other stage for
tripping.
S3 PROTECTION
6–99
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