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Setting the time synchronization
The calendar clock can run locally or be synchronized with external IRIG-B time standard
signal, RSM clock, IEC60870-5-103 or GPS. This is selected by setting as follows:
• Press 2 (=Time synchronization) to display the "Time synchronization" screen.
/ 3 T i m e s y n c h r o n i z a t i o n
S y n c
0 = O f f
• Enter the selected number and press the ENTER key.
Note: When to select IRIG-B, RSM, IEC or GPS, check that they are active on the "Time
synchronization source" screen in "Status" sub-menu. If it is set to an inactive IRIG-B, RSM,
IEC or GPS, the calendar clock runs locally.
Setting the time zone
When the calendar clock is synchronized with the IRIG-B time standard signal or GPS signal, it
is possible to transfer GMT to the local time.
• Press 3 (=Time zone) to display the "Time zone" screen.
/ 3
T i m e
G M T
(
• Enter the difference between GMT and local time and press the
4.2.6.7
Protection
The GRL100 can have 8 setting groups for protection according to the change of power system
operation, one of which is assigned to be active. To set protection, do the following:
• Press 6 (=Protection) on the "Setting (change)" screen to display the "Protection" screen.
/ 2
P r o t e c t i o n
1 = C h a n g e
2 = C h a n g e
3 = C o p y
Changing the active group
• Press 1 (=Change active group) to display the "Change active group" screen.
/ 3
C h a n g e
1 = G r o u p 1
5 = G r o u p 5
C u r r e n t
• Enter the selected number and press the ENTER key.
Changing the settings
Almost all the setting items have default values that are set when the GRL100 was shipped. For
the default values, see Appendix D and H. To change the settings, do the following:
1 = I R I G
2 = R S M
z o n e
- 1 2 -
+ 1 2 ) :
a c t i v e
g r o u p
s e t t i n g
g r o u p
a c t i v e
g r o u p ( A c t i v e
2 = G r o u p 2
3 = G r o u p 3
6 = G r o u p 6
7 = G r o u p 7
N o . =
*
214
1 / 1
3 = I E C
4 = G P S
1
1 / 1
+ 9
_
h r s
key.
ENTER
g r o u p =
* )
4 = G r o u p 4
8 = G r o u p 8
S e l e c t
N o .
=
6 F 2 S 0 8 5 0
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