13.
106.3 Battery Connection Voltage Check
Using a digital volt-ohm meter, check for correct nominal battery voltage between DC Input NEG and
POS wires. Refer to table in
Section 106.2
for proper system DC voltage. Voltage reading should be
±10% of system DC voltage.
107. Final Installation Checklist
IMPORTANT: Before proceeding to the System Start-Up Procedure (Section 108) complete the
Final Installation Checklist below.
1.
Insure the
VST
cabinet(s) is securely fastened to a wall or other structure.
2.
Insure that the input circuit breaker in the building service panel serving as the AC disconnect to
the
VST
system is in the
OFF
position.
3.
Check for proper ground connections in the
VST
unit cabinet.
4.
Check for any loose wiring connections in the
VST
unit cabinet.
5.
Check that correct nominal battery voltage (24 or 48 VDC) is present in the
VST
unit between the
DC Input
NEG
and
POS
. Refer to
Section 106.2
for proper system DC voltage.
6.
Verify AC Input voltage to unit matches system voltage configuration.
108. System Start-Up Procedure
IMPORTANT: The
VST
inverter system is a sophisticated electronic backup power supply. Care
must be taken to follow the steps below in their exact sequence. Failure to do so may result
in possible equipment failure.
CAUTION: Familiarize yourself with the shut down procedure in Section 200.1 before proceed-
ing with the Start Up.
1.
Hold
S1 PRECHARGE SWITCH
in the
ON
(up) position for
10 seconds
, then release.
2.
Place
S2 BATTERY SWITCH
in the
ON
(up) position.
3.
Apply utility AC power to the system using branch circuit breaker.
4.
Observe the LED Status indicators and verify the following:
A) AC ON indicator (red LED) is illuminated (indicates AC utility power is available to unit).
B) CHG ON indicator (green LED) is illuminated (indicates battery is connected and charger is
operational).
5.
Verify
Normally-On
fixtures or switched fixtures (where applicable) are illuminated (local fixture
switch must be in
ON
position).
109. System Test
Momentarily push
TEST
switch and verify the following:
A) INV ON status indicator (yellow) illuminates (indicates inverter is operational).
B) Normally-On, Normally-Off and Switched fixtures are illuminated (where applicable).
