Oscillography - GE Multilin UR Series N60 Instruction Manual

5.2 PRODUCT SETUP
The date and time can be synchronized a known time base and to other relays using an IRIG-B signal. It has the same
accuracy as an electronic watch, approximately ±1 minute per month. If an IRIG-B signal is connected to the relay, only the
current year needs to be entered. See the
The
REAL TIME CLOCK EVENTS
The
LOCAL TIME OFFSET FROM UTC
(Greenwich Mean Time) in hours. This setting has two uses. When the N60 is time synchronized with IRIG-B, or has no
permanent time synchronization, the offset is used to calculate UTC time for IEC 61850 features. When the N60 is time
synchronized with SNTP, the offset is used to determine the local time for the N60 clock, since SNTP provides UTC time.
The daylight savings time (DST) settings can be used to allow the N60 clock can follow the DST rules of the local time
zone. Note that when IRIG-B time synchronization is active, the DST settings are ignored. The DST settings are used when
the N60 is synchronized with SNTP, or when neither SNTP nor IRIG-B is used.
Only timestamps in the event recorder and communications protocols are affected by the daylight savings time set-
tings. The reported real-time clock value does not change.
NOTE
a) MAIN MENU

PATH: SETTINGS PRODUCT SETUP
 OSCILLOGRAPHY

5
Oscillography records contain waveforms captured at the sampling rate as well as other relay data at the point of trigger.
Oscillography records are triggered by a programmable FlexLogic™ operand. Multiple oscillography records may be cap-
tured simultaneously.
The
NUMBER OF RECORDS
other factors such as sample rate and the number of operational modules. There is a fixed amount of data storage for oscil-
lography; the more data captured, the less the number of cycles captured per record. See the

RECORDS

OSCILLOGRAPHY

ple configurations with corresponding cycles/record.
5-38
COMMANDS
setting allows changes to the date and/or time to be captured in the event record.
setting is used to specify the local time zone offset from Universal Coordinated Time

OSCILLOGRAPHY
NUMBER OF RECORDS:
15
TRIGGER MODE:
MESSAGE
Automatic Overwrite
TRIGGER POSITION:
MESSAGE
50%
TRIGGER SOURCE:
MESSAGE
Off
AC INPUT WAVEFORMS:
MESSAGE
16 samples/cycle
 DIGITAL CHANNELS
MESSAGE

 ANALOG CHANNELS
MESSAGE

is selectable, but the number of cycles captured in a single record varies considerably based on
menu to view the number of cycles captured per record. The following table provides sam-
N60 Network Stability and Synchrophasor Measurement System
 menu to manually set the relay clock.
SET DATE AND TIME
Range: 1 to 64 in steps of 1
Range: Automatic Overwrite, Protected
Range: 0 to 100% in steps of 1
Range: FlexLogic™ operand
Range: Off; 8, 16, 32, 64 samples/cycle
5 SETTINGS
5.2.7 OSCILLOGRAPHY

ACTUAL VALUES
GE Multilin