GE LPS-O - Time Synchronization

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14
LPS-O Line Protection System GE Power Management
1.5 OTHER FEATURES 1 PRODUCT DESCRIPTION
1
Figure 1–6: SWITCH SELECTION OF ACTIVE SETTING GROUP
1.5.10 TIME SYNCHRONIZATION
The LPS-O includes a clock that can run freely from the internal oscillator or be synchronized from an external
signal. An unmodulated IRIG-B signal connected to the IRIG-B terminals, located on terminal block “D” on the
rear panel, may be used to synchronize the clock. The clock in a given LPS-O is synchronized to within ±1 ms
of any other LPS-O clock if the two relays are wired to the same synchronizing signal.
Table 1–5: TRUTH TABLE FOR SETTINGS GROUP
CC5 CC6 SETTINGS
GROUP
00 G1
01 G2
10 G3
11 G4
CC5
→
bit 1 CC6
→
bit 0
Table 1–6: SETTINGS GROUP SWITCH 16SB1_______
CONTACT NUMBER G4 G3 G2 G1
1 2
1
XX
2
3 4
3
XX
4
SG
G1
G4
o
G2
G3
(bit 2)
(bit 1)
CC5
CC6
(+)
(-)
(+)
(-)
SG / 1
SG / 3