Vector MAXX SST 3000 VEC051 Owner's Manual page 12

3000
MAXXSST ™
Figure 5. Inverter Simplified Diagram.
The inverter's output stage uses multiple banks of metal-oxide semiconductor
field-effect transistors (MOSFETs). This stage functions as a high-power bipolar
switch, alternately applying opposite polarity to the AC outlet and the high output
AC terminal block hot and neutral terminals.
MAXXSST
The 110 VAC output of the
wave (MSW) as shown in FIGURE 6. This type of waveform has the same ener-
gy characteristics as the sine wave of commercial electrical power. The modified
sine wave is superior to the 100% square wave output (not shown) produced by
most other DC-to-AC inverters on the market. A modified sine wave, as opposed
to a square wave, is vital to the efficient and proper operation of certain appli-
ances such as computers, TVs, and certain electronic equipment.
Figure 6. Modified Square Wave and Sine Wave Comparison.
110 VAC
Do not connect this
Internal Inter nal
wire to Earth ground
™ 3000
is in the form of a modified sine
110 VAC
9
NOTE: Vector Manufacturing recommends that for typical heavy-duty uses, a ANL
500 or equivalent (capable of handling 500 amps for a few seconds)
main buss fuse be added to the power source positive cable as close as
possible to the power source (battery) positive terminal. The fuse
amperage must be sized to allow simultaneous operation of all the AC
appliances to be powered, with delay characteristics that allow for the
momentary high start-up current requirements of inductive loads. Use the
recommended fuse block (fuse holder) and fuse or an electrical equivalent.
For full rated output and motor start-up surge output, ensure that the
installation is configured to handle the full load. Figure 8 is also used as a
guide when the cables are measured for actually installing the inverter.
5.2 Operating Environment
WARNINGS
MAXXSST
DO NOT locate the
where explosive or flammable fumes might be present. Typically, these areas
are: the engine room or engine compartment of a gasoline-powered vehicle or
boat and small, closed, unvented battery compartments.
In all marine applications, DO NOT install the inverter below or near the
waterline and keep the unit away from moisture or water.
Use ONLY non-corrosive marine fasteners and fittings for installation.
Use of shock-absorbent/insulating materials is strongly recommended.
CAUTION:
To avoid possible dangerous conditions, the
located where:
1. The unit is kept dry.
2. Air temperature is between 30°F (-1°C) non-condensing and 105°F (40°C).
3. At least three inches of clearance from other objects is maintained for
cooling airflow.
4. The unit is not exposed to direct heat or sunlight or to explosive or
flammable fumes.
5. The unit is as close to the DC power source as possible.
3000
™ in an area, room or compartment
MAXXSST 3000
™
must be
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