3-48 Overcurrent, Voltage, Synchronism Check, Frequency, and Power Elements Date Code 20001006
SEL-351 Instruction Manual
Figure 3.28: Angle Difference Between V
P
and V
S
Compensated by Breaker Close Time
(f
P
< f
S
and V
P
Shown as Reference in This Example)
Courtesy of NationalSwitchgear.com
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