49
O PER AT I O N , M A I N T EN A N C E , A N D I N S TA L L AT I O N G U I D E
1
LC
D
Parameters
(continued)
*Default
Device Parameters
In-phase Monitor
Enable
Off*
On
Synchronization Window
±1
...
10 %
(±1* %)
A phase angle difference limits to restrict live to
live source transfers unless both sources are
within this certain window of electrical degrees.
Time Delays
Override S1 Failure
0...60 s
(2* s)
S1 priority: How long the device is waiting S1
recovery before starting transfer sequence
to S2.
S2 priority: How long the device is keeping the
load on failed S1 although S2 is already
available.
Transfer from
S1 to S2
0…60 min
(2* s)
S1 priority: How long the device is keeping the
load on failed S1 after S2 becomes available.
S2 priority: How long the device waits before
transfer sequence back to available S2 begins.
This delay is bypassed by 'Override S1 Failure'
in case of S1 failure.
Pre-transfer signal 1 / 2 / 3 / 4
Pre-transfer S1 to S2
Post-transfer S1 to S2
Pre-transfer S2 to S1
Post-transfer S2 to S1
0*...300 s
Enabled only when any digital outputs is
configured as 'Pre-transfer Signal'.
Pre-transfer: How long the device is keeping
pre-transfer signal activated before transferring
from S1 to S2 or S2 to S1.
Post-transfer: How long the device is keeping
pre-transfer signal activated after transferring
from S1 to S2 or S2 to S1.
Center-off
0*...300 s
Only delayed transition I-O-II type. How long the
switch is stopped at position O while
transferring from S1 to S2 or from S2 to S1 and
the original source is not completely down.
Center-OFF delay is bypassed in case all phases
are missing from the original source which we
are leaving.
Continued on the next page
Содержание Zenith ZTG T Series
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