GE 745 Instruction Manual page 178

S4 ELEMENTS
5.6.10.4 Overfrequency

OVERFREQUENCY []
5–82
PATH: SETPOINTS S4 ELEMENTS

OVERFREQUENCY
FUNCTION: Disabled
OVERFREQUENCY
MESSAGE
RLYS (1-8): --------
OVERFREQUENCY
MESSAGE
TARGET: Latched
CURRENT SENSING:
MESSAGE
Enabled
MINIMUM OPERATING
MESSAGE
CURRENT: 0.20 x CT
MINIMUM OPERATING
MESSAGE
VOLTAGE: 0.50 x VT
OVERFREQUENCY
MESSAGE
PICKUP: 60.50 Hz
OVERFREQUENCY
MESSAGE
DELAY: 5.00 s
OVERFREQUENCY
MESSAGE
BLOCK: Disabled
• MINIMUM OPERATING CURRENT: Enter the minimum value of winding 1 phase A
current (in units of relay nominal current) required to allow the overfrequency element
to operate.
• MINIMUM OPERATING VOLTAGE: Enter the minimum voltage value (in units of relay
nominal voltage) required to allow overfrequency to operate.
• OVERFREQUENCY PICKUP: Enter the frequency (in Hz) above which the overfrequency
element will pickup and start the delay timer.
FREQUENCY OVERFREQUENCY 1(2)
 
Range:
Range:
Range:
Range:
Range:
Range:
Range:
Range:
Range:
745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
Enabled, Disabled
1 to 8
Self-Reset, Latched, None
Enabled, Disabled
0.05 to 1.00 x CT in steps of
0.01
0.10 to 0.99 x CT in steps of
0.01
50.01 to 65.00 Hz in steps of
0.01
0.00 to 600.00 s in steps of 0.01
Logc Inpt 1 to 16, Virt Inpt 1 to
16, Output Rly 2 to 8, SelfTest
Rly, Vir Outpt 1 to 5, Disabled