INCORPORATED
®
Installation
ITC-Series
Inverter
Page 24
10/07/05
A) With shore power applied, press the Charger ON/OFF button to enable the Charger (if not
enabled). The Charge LIGHT should come on and the batteries should begin charging. Remember to
reduce the loads on the unit since the APM will limit the available power to the charger based on its
settings.
B) Disconnect the shore power
– the unit should transfer back to Inverter mode.
C) Discharge the battery by placing the AC load on the system and operating the inverter.
D) When the battery charge level is low, the inverter will turn off.
E) Connect an ammeter to the DC cables between the inverter and the battery to monitor the current
(DC amps), and a voltmeter to the battery to monitor the battery voltage. The battery charger will
step through its sequence and stop in the float mode.
Step 15:
The system is now ready for operation.
Battery Temperature Sensor
Route battery temperature sensor (BTS) cable from inverter to the battery. Note: the keyed BTS cable has
same connector on both ends so cable connector orientation does not matter. Make sure cable does not
come into contact with sharp edges and is secured with nylon ties or equivalent. Plug the BTS cable into
P7 on inverter/charger control board. See F 13 Figure 3-1 Customer Terminations. Plug opposite end of
BTS cable into the battery temperature sensor, which is attached to battery with double-sided tape.
GENERAL INFORMATION SECTION
Generic Inverter Description
In general, an inverter converts DC electrical power into AC power. This power can be used to operate various
AC-driven appliances. Typical DC power sources include batteries that store electrical energy, power
generated from a vehicle alternator or renewable energy sources such as photovoltaic (solar) panels both with
the appropriate regulator or charge controller to bring the DC source within the operating range of the inverter.
The most common battery systems are 12 or 24 volt. Some systems, however, operate on higher voltages
such as 32, 36, 48, or 120 volts. The most common inverter AC output power is 120 volts at a frequency of 60
Hz. Some inverters, however, are designed to produce 240 volts, or both 120 and 240 volts at 60 Hz. Because
some countries use power of different voltage and frequency (e.g., 230 volts at 50 Hz), inverters are available
to conform to these requirements.
The three available inverter types are distinguished by the type of AC output waveform they produce. This
waveform affects the AC loads they operate. This section provides an overview of these inverter types,
including the advantages and disadvantages associated with using each type.
Sine Wave
Modified Sine Wave
Square Wave
Sine Wave Inverter
Sine wave inverters produce an AC output waveform like power produced by the electric utility companies and
rotating generators. The sine wave inverter‟s waveform is characterized by the highest peak voltage and
smooth voltage transitions (no square wave components). Such inverters are the most costly of the three
inverter types because they contain additional electronics to produce the required waveform. A measure of the
sine wave quality is
Total Harmonic Distortion
(THD), and is expressed in a percentage. The lower the THD
the higher the quality of the sine wave power.