PSERC
04/06/04
12
What is the existing relay test practice?
•Phasor testing procedure:
•   - Uses traditional test sets (Doble,
•     Megger, Omicron, Manta, etc)
•   - Sets a fixed voltage and ramps current from
•     zero until the relay operates
•   - Repeats such a test for several operating
•     points
•   - Performs tests in the field or on a relay
•     manufacturing floor