GE 750, Инструкция по эксплуатации

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8-
4
750/760 Feeder Management Relay GE Power Management
8.4 CLOCK 8 S1 RELAY SETUP
8
8.4 CLOCK 8.4.1 DESCRIPTION
The relay has an internal real time clock that is used to perform time and date stamping for various relay fea-
tures such as event, maximum demand, and last trip data recording. Time stamping on multiple relays can be
synchronized to ±1 ms with the use of an IRIG-B input. The clock has a battery back up so that the time and
date are maintained on the loss of relay control power. The time and date are preset at the factory, but should
be changed to correspond to the appropriate time zone.
8.4.2 SETTINGS
■
CLOCK
■
[ENTER] for more
The Clock setpoints path is:
\ SETPOINTS \ S1 RELAY SETUP \ CLOCK
DATE (MM/DD/YYYY):
03/16/1997
Range: Month = 1 to 12, Day = 1 to 31, Year = 1990 to 2089
Enter the current date, using two digits for the month, two digits for the day,
and four digits for the year. For example, July 15, 1998 would be entered as 07
15 1998. If entered from the front panel, the new date will take effect the
moment the
key is pressed.
TIME (HH:MM:SS):
16:30:00
Range: Hour = 0 to 23, Minute = 0 to 59, Second = 0 to 59
Enter the current time, by using two digits for the hour in 24 hour time, two dig-
its for the minutes, and two digits for the seconds. If entered from the front
panel, the new time will take effect the moment the
key is pressed. For
example, 3:05 PM would be entered as 15 05 00, with the key pressed
at exactly 3:05 PM.
IRIG-B SIGNAL TYPE:
None
Range: None, DC Shift, Amplitude Modulated
Enables the IRIG-B time synchronization and selects the type of IRIG-B signal
to use.
NOTES:
1. The IRIG-B signal contains all necessary time and date stamping data
except for the year. The year must be entered with the date.
2. If IRIG-B is enabled and functioning properly, then setting the time and
date (except for the year) as described in the previous message will have
no effect.
3. If IRIG-B is enabled but the signal cannot be decoded, the self-test warn-
ing ‘IRIG-B Failure’ is generated.
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