6
Read the following applications and comply with them, and your
MAXX
SST
™
3000
will give you years of reliable service.
Never connect the inverter’s AC output to an already powered AC distribution system.
If you will only be operating the
MAXX
SST
™
inverter occasionally and manually,
using the two outlets on the front panel of the inverter, then you can disregard the
next two sections (2.1 and 2.2), except for battery charging requirements.
Two primary ways for connecting to an AC distribution system are provided in
sections 2.1 and 2.2.
2.1 Uninterruptible Power Supply (UPS)
One way is to continuously operate the inverter from the battery bank, simultaneously
replacing the charge on the battery bank using an AC-powered 12 Volt battery
charger or other means of charging the batteries, such as a solar charger system. See
FIGURE 3
. The charger must be selected to operate continuously and to be able to
replace the charge on the battery as the inverter operates. In this configuration, the
battery “floats” on the DC from the charger, not really supplying power or being
charged. When outside AC fails, the inverter continues to power the appliances
for the life of the useful charge on the battery bank. When outside AC is restored,
the batteries are recharged as the inverter continues to operate. Battery recharging
must be sized to replace the average daily current supplied by the inverter plus a
little more current. Another requirement is that the battery charging rate cannot
exceed 10% of the rated Ampere Hour (AH) rating of the battery bank, otherwise
the life of the batteries can be dramatically reduced through overcharging. Most
modern battery chargers automatically adjust the charging rate based on the state
of the batteries to which they are connected. For this type of operation, use deep
cycle batteries and avoid charging at too fast a rate.
21
5.5. Permanent Installation
5.5.1 Preparation for Permanent Installation
Note than a prepared heavy duty 6 ft. cable kit can be purchased from
your dealer or Vector Manufacturing. Call Tech Support at:
(954) 584-4446 or (866) 584-5504 Ext. 19 ask for VEC085 cable set.
For permanent installation to heavy-duty battery power you will need:
• Ring terminals to connect two 0000 (4/0) cables to the battery bank
• A single length of not more than ten feet of 0000 (4/0) multi-stranded flexible
insulated cable
• A 500 ampere low voltage fuse and fuse holder type ANL
• Mounting screws, bolts and nuts for mounting the inverter and the fuse holder
• Tools to drill holes for mounting the inverter and fuse holder
• Lead-tin solder, flux, propane torch and an igniter for the torch
• Sharp utility knife to cut insulation
• Hacksaw to cut the 0000 (4/0) cable
• Pair of diagonal cutters to trim away some cable strands if necessary
• Ring terminals connector for 0000 4/0 cable for connection to battery
(batteries)
Installation Notes:
The
MAXX
SST
™
3000
has four slots in its mounting bracket that allow the unit
to be fastened against a bulkhead, floor, wall or other flat surface. Ideally, the
mounting surface should be cool to the touch. It is more electrically efficient to use
longer AC wiring than DC wiring, so install the inverter as close as possible to the
12 VDC power source.
The inverter can be operated in any position, however, if it is to be mounted on a
wall mount it horizontally so that indicators, switches, outlets and terminal blocks
located on the front panel are visible and accessible. Look for a convenient place
to mount inverter and the fuse holder. Take the length of cable and do a trial rout-
ing of the cable. Don’t do any cutting at this time. Take a look at
FIGURE 8
.
Measure the cable path and ensure that either the positive cable run to the battery
or negative cable run to the battery does not exceed 4 feet. Reposition the
inverter and fuse holder if necessary. Remember and observe the other
environmental requirements described earlier.
After you have selected an appropriate location for the inverter and fuse block,
proceed with the actual installation of the inverter.
Contact Vector™ for any further installation information or questions. Your can purchase
fuses, fuse holders, and 4/0 cable or cable battery connectors from your local
electrical supplier or from Vector Technical Support at (954) 584-4446 Ext. 19.
5.5.2 Permanent Installation Procedures
The cables between the power source and the inverter should be as shown in
FIGURE 8
. Be sure to remove the carriage bolts before starting permanent installation.
Inverter DC cables and fuse installation is as follows:
