S&C TripSaver II User Manual

S&C Instruction Sheet 461-504 99
Informational and Settings Screens
During the walk-away period, the operator can no longer cancel the Open operation.
At the end of the walk-away period, the TripSaver II recloser will open the vacuum-
interrupter contacts to interrupt the load current, then drop open and reclose the
contacts after the tilt sensor indicates a completed drop-open function. See Figure 135
for a flowchart of the LMO feature sequence.
Recloser
normal state
10-second
cancellation
window
20-second
walk-away
window
Recloser
breaks load
and
drops open
Operate lever
X times within
Y-second
window
Triggering condition not met
Triggering
condition
met
Any lever movement
LMO
executes
Figure 135. The LMO feature sequence.
It is important to keep in mind the following:
• When the LMO feature is enabled, a new LCD screen titled “LMO” will be automati-
cally displayed under the LCD scrolling screen sequence as its rst scrolling screen,
with the X value shown on the left and the Y value shown on the right. This screen is
not displayed when the LMO feature is disabled.
• The mode selector operation counter registers a single movement starting either in
the Up or Down position of the lever as an operation. Moving the lever down and then
back up would be counted as two operations.
• If the operation time window (Y) expires before (X) lever operations are completed,
the command sequence will be terminated. The operation counter will reset to zero;
any additional lever operations will begin the count toward a new command sequence.
• If the TripSaver II recloser detects a fault while a user is performing the LMO com-
mand, the command sequence will reset before the recloser trips, and the protection
sequence of the TripSaver II recloser will operate normally. The Reclose/Non-
Reclose function will be selected based on the operating lever position at the time the
TripSaver II recloser trips. Figures 136 through 140 on page 100 show how the LCD
screens appear.
• LMO events will be recorded in the Event log.
When the LMO feature is disabled, the TripSaver II recloser will not drop open,
no matter how many times the MODE-SELECTOR lever is operated. However, if 10
MODE-SELECTOR lever operations are detected within a 60-second timeframe when
the mode is disabled and the recloser is in the vertical position, the recloser will display
a screen showing “LMO XXXXX” to remind the line crew the LMO feature is disabled
(see Figure 140). At the same time, to maximize system security, the recloser will consider
that as a suspicious malicious attempt, and if the TripSaver II recloser is connected to
remote communications, the recloser will send an unsolicited alert. This activity will
also be recorded in the event log.

S&C TripSaver II Specifications

General

Brand	S&C
Model	TripSaver II
Category	Industrial Electrical
Language	English