CHAPTER 6: ACTUAL VALUES 6.2 STATUS
GEK-106310-AF F650 DIGITAL BAY CONTROLLER 6-9
6.2.4 Control element status
6.2.4.1 Frequency
F650 units incorporate three overfrequency and three underfrequency units. For each of them there are two magnitudes
pickup and trip (operation).
Frequency elements are often used in generating plants, as well as in the connection of substations to the main system.
Frequency monitoring is the base for synchronous machines protection application, with a couple of setting levels, as well
as for the development of automatic shedding functions and underfrequency reset.
This screen shows the activation of all frequency elements available in the F650. It can be accessed from the menu:
Actual> Status > Control Elements >Frequency, and it includes the following signaling LEDs.
Table 6-10: Frequency actual values
OVERFREQUENCY ACTUAL VALUES UNDERFREQUENCY ACTUAL VALUES
OVERFREQ1 PKP UNDERFREQ1 PKP
OVERFREQ1 OP UNDERFREQ1 OP
OVERFREQ2 PKP UNDERFREQ2 PKP
OVERFREQ2 OP UNDERFREQ2 OP
OVERFREQ3 PKP UNDERFREQ3 PKP
OVERFREQ3 OP UNDERFREQ3 OP
OVERFREQ4 PKP UNDERFREQ4 PKP
OVERFREQ4 OP UNDERFREQ4 OP
OVERFREQ5 PKP UNDERFREQ5 PKP
OVERFREQ5 OP UNDERFREQ5 OP
OVERFREQ6 PKP UNDERFREQ6 PKP
OVERFREQ6 OP
UNDERFREQ6 OP
FREQUENCY RATE OF CHANGE ACTUAL
VALUES
FREQ RATE1 PKP
FREQ RATE1 OP
FREQ RATE2 PKP
FREQ RATE2 OP
FREQ RATE3 PKP
FREQ RATE3 OP
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