Real Time Clock - GE D30 Instruction Manual

5.2 PRODUCT SETUP
PATH: SETTINGS PRODUCT SETUP
REAL TIME
CLOCK
5
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 D30 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 D30 is time
synchronized with SNTP, the offset is used to determine the local time for the D30 clock, since SNTP provides UTC time.
The daylight savings time (DST) settings can be used to allow the D30 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 D30 is synchronized with SNTP, or when neither SNTP nor IRIG-B is used.
5-28

REAL TIME CLOCK

IRIG-B SIGNAL TYPE:
None
REAL TIME CLOCK
MESSAGE
EVENTS: Disabled
LOCAL TIME OFFSET
MESSAGE
FROM UTC:
DAYLIGHT SAVINGS
MESSAGE
TIME: Disabled
DST START MONTH:
MESSAGE
April
DST START DAY:
MESSAGE
Sunday
DST START DAY
MESSAGE
INSTANCE: First
DST START HOUR:
MESSAGE
2:00
DST STOP MONTH:
MESSAGE
April
DST STOP DAY:
MESSAGE
Sunday
DST STOP DAY
MESSAGE
INSTANCE: First
DST STOP HOUR:
MESSAGE
2:00
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
D30 Line Distance Relay
Range: None, DC Shift, Amplitude Modulated
Range: Disabled, Enabled
Range: –24.0 to 24.0 hrs in steps of 0.5
0.0 hrs
Range: Disabled, Enabled
Range: January to December (all months)
Range: Sunday to Saturday (all days of the week)
Range: First, Second, Third, Fourth, Last
Range: 0:00 to 23:00
Range: January to December (all months)
Range: Sunday to Saturday (all days of the week)
Range: First, Second, Third, Fourth, Last
Range: 0:00 to 23:00
menu to manually set the relay clock.
SET DATE AND TIME
5 SETTINGS
5.2.6 REAL TIME CLOCK
GE Multilin