Installation manual

UT340, UT360, UT380, and UT3100
Planning and Installation Manual
25
15.At the maintenance bypass cabinet (MBC), measure the following:
a.
N input
to
Ground
_______VAC
b.
N output
to
Ground
_______VAC
c.
N input
to
N output
_______VAC
“
N input
to
N output
” should not exceed “
N input
to
Ground
.” If it does, call BEST’s
Technical Support Center.
16.Check for proper voltages at the bypass switch load output terminals and the load
distribution panel(s).
Bypass Switch Load Output Load Panel Input
a.
L1
to
neutral
_______VAC
L1
to
neutral
_______VAC
b.
L2
to
neutral
_______VAC
L2
to
neutral
_______VAC
c.
L3
to
neutral
_______VAC
L3
to
neutral
_______VAC
17.Switch the UPS bypass switch to “BYPASS.”
18.Recheck for proper voltages at the bypass switch load output and the load distribution
panel(s).
Bypass Switch Load Output Load Panel Input
a.
L1
to
neutral
_______VAC
L1
to
neutral
_______VAC
b.
L2
to
neutral
_______VAC
L2
to
neutral
_______VAC
c.
L3
to
neutral
_______VAC
L3
to
neutral
_______VAC
19.Switch the UPS bypass switch to “UPS.”
20.Return the UPS to normal operation mode:
a. Press to access the user parameters.
b. Press the or key until the display shows
Bypass operation: ON
.
c. Press to turn static bypass operation off. The display should show
Normal
operation load power xx%
.
You can now apply loads to the system. As the last step of the installation, BEST recommends
that you clear the events log. See Section 400, “Clearing the Events Log.”.