GE G30 Instruction Manual page 212

5.2 PRODUCT SETUP
Table 5–9: OSCILLOGRAPHY CYCLES/RECORD EXAMPLE
RECORDS CT/VTS
3 1
3 1
16 1
16 1
32 1
32 1
3 2
3 2
16 2
A new record can automatically overwrite an older record when
Set the
TRIGGER POSITION
tion of 25% consists of 25% pre- and 75% post-trigger data. The
can be any FlexLogic parameter (element state, contact input, virtual output, and so on). The relay sampling rate is 64 sam-
ples per cycle.
The
AC INPUT WAVEFORMS
stored. Reducing the sampling rate allows longer records to be stored. This setting has no effect on the internal sampling
rate of the relay which is always 64 samples per cycle; that is, it has no effect on the fundamental calculations of the device.
When changes are made to the oscillography settings, all existing oscillography records are cleared.
5
NOTE
b) DIGITAL CHANNELS

PATH: SETTINGS PRODUCT SETUP
 DIGITAL CHANNELS

A
DIGITAL 1(63) CHANNEL
oscillography trace depends in part on the number of parameters selected here. Parameters set to "Off" are ignored. Upon
startup, the relay will automatically prepare the parameter list.
5-72
SAMPLE DIGITAL
RATE CHANNELS
32 32
64 32
32 32
64 32
32 32
64 32
32 32
64 32
32 32
to a percentage of the total buffer size (for example, 10%, 50%, 75%, and so on). A trigger posi-
setting determines the sampling rate at which AC input signals (that is, current and voltage) are

OSCILLOGRAPHY
DIGITAL CHANNEL
Off
DIGITAL CHANNEL
MESSAGE
Off
DIGITAL CHANNEL
MESSAGE
Off
DIGITAL CHANNEL 63:
MESSAGE
Off
setting selects the FlexLogic operand state recorded in an oscillography trace. The length of each
G30 Generator Protection System
ANALOG CYCLES PER
CHANNELS RECORD
16 2399
16 1450
16 666
16 402
16 352
16 213
16 1516
16 851
16 421
is set to "Automatic Overwrite."
TRIGGER MODE
is always captured in oscillography and
TRIGGER SOURCE

DIGITAL CHANNELS
Range: FlexLogic operand
1:
Range: FlexLogic operand
2:
Range: FlexLogic operand
3:
↓
Range: FlexLogic operand
5 SETTINGS
GE Multilin