Synchrocheck (Ansi 25) - GE G30 Instruction Manual

CONTROL ELEMENTS
Seven frequency out-of-band accumulators are available. The following settings are available for each accumulator.
FREQ ACCUM 1 FUNCTION
FREQ ACCUM 1 UPPER FREQ
This upper frequency value must be greater than the lower frequency value.
FREQ ACCUM 1 LOWER FREQ
This lower frequency value must be less than the upper frequency value.
FREQ ACCUM 1 TIME LIMIT
exceeds the overfrequency accumulation limit and operates.
FREQ ACCUM 1 TIME PRESET
hardware platform to a new platform, or, given that some knowledge of the operation of the turbine is known, starts
accumulation at a user-specified value.
5

5.8.9 Synchrocheck (ANSI 25)

SETTINGS  CONTROL ELEMENTS  SYNCHROCHECK  SYNCHROCHECK 1(4)
 SYNCHROCHECK 1

5-260
FREQ ACCUM 1 LOWER

FREQ 60.00 Hz
FREQ ACCUM 1 TIME

LIMIT: 200 s
FREQ ACCUM 1 TIME

PRESET: 0 s
— Enables and disables a particular frequency band.
— Specifies the upper frequency value, in Hz, below which band 1 values start to accumulate.
— Specifies the lower frequency value, in Hz, above which band 1 values start to accumulate.
— Specifies the accumulation time, in seconds, at which the overfrequency accumulation band
— Allows the transfer of accumulated frequency time of operation values from a previous
Figure 5-144: Frequency out-of-band accumulation logic
SYNCHK1 FUNCTION:

Disabled
SYNCHK1 BLOCK:

Off
SYNCHK1 V1 SOURCE:

SRC 1
SYNCHK1 V2 SOURCE:

SRC 2
Range: 20.00 to 70.00 Hz in steps of 0.01
Range: 1 to 65535 s in steps of 1
Range: 0 to 65535 s in steps of 1
Range: Disabled, Enabled
Range: FlexLogic operand
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: SRC 1, SRC 2, SRC 3, SRC 4
G30 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS