Accidental Energization; Flexlogic - GE G60 Instruction Manual

Generator protection system
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SETTINGS
Make the following changes in the EnerVista software or the front panel
UNDERFREQUENCY  UNDERFREQUENCY 1(2)
menus.
1(2)

8.2.14 Accidental energization

In this example, the
set at half the minimum expected fault current, and in this case 1.0 pu (8000 A primary) is selected. In cases where it is
possible to re-energize the machine through its auxiliary transformer, a lower setting can be required. The undervoltage
pickup setting must be set above the maximum expected fault voltage; 0.700 pu is used here.
Make the following changes in the EnerVista software or the front panel
GROUP 1  ACCIDENTAL ENERGIZATION
8

8.2.15 FlexLogic

The following logic as given as an example. The logic for each specific application depends on system design, protection
philosophies, and operating practices.
8-14
and
SETTINGS  CONTROL ELEMENTS  OVERFREQUENCY  OVERFREQUENCY
is selected as "UV and Offline." The
ACCDNT ENRG ARMING MODE
menu.
CHAPTER 8: APPLICATION OF SETTINGS
SETTINGS  CONTROL ELEMENTS 
ACCDNT ENRG OC PICKUP
SETTING S  GROUPED ELEMENTS  SETTING
G60 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
setting is to be

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