Page 334 - Practical Power System and Protective Relays Commissioning
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FIGURE 20.2.2 Three-phase pickup/drop out test connection for OC relay.
TABLE 20.2.1 Relay Test Sheet 1
Phase R N Y N B N R Y Y B B R
Pickup
Drop out
Multiplier 2 3 I 3 3 I 4 3 I
Measured time ------- ------- -------
R N
Y N
B N
R Y
Y B
B R
Phase R N Y N B N R Y Y B B R
I instantaneous (A)
