Frequency; Accidental Energization - GE G60 Instruction Manual

9.1 SETTING EXAMPLE
The pickup and delay settings are dependent on operating practices and system characteristics. In this example, two over-
frequency and two underfrequency elements will be used. The elements will be blocked when offline. Underfrequency will
initiate a trip. Overfrequency will alarm only. Either source may be assigned.
Make the following changes in EnerVista UR Setup or through the

QUENCY UNDERFREQUENCY 1(2)
menus:
In this example, the
ACCDNT ENRG ARMING MODE
should be set at ½ the minimum expected fault current. 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 may be required. The undervoltage
pickup setting must be set above the maximum expected fault voltage.
Make the following changes in EnerVista UR Setup or through the

1

ACCIDENTAL ENERGIZATION

9
9-12
and the 
SETTINGS CONTROL ELEMENTS
is selected as "UV and Offline". The
menu:
G60 Generator Protection System
9 APPLICATION OF SETTINGS

SETTINGS CONTROL ELEMENTS

OVERFREQUENCY
9.1.15 ACCIDENTAL ENERGIZATION
ACCDNT ENRG OC PICKUP

SETTINGS GROUPED ELEMENTS

9.1.14 FREQUENCY


UNDERFRE-

OVERFREQUENCY 1(2)
setting

SETTING GROUP
GE Multilin