SAMLEX AMERICA INC. | 23
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Do not keep the battery wires far apart. Keep them taped together to reduce
their inductance and induced voltages. This reduces ripple in the battery wires
and improves performance and efficiency.
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Shield the DC side wires with metal sheathing / copper foil /braiding: - Use co-
axial shielded cable for all antenna inputs (instead of 300 ohm twin leads) - Use
high quality shielded cables to attach audio and video devices to one another.
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Limit operation of other high power loads when operating audio/video equipment.
4.9 BuzzinG SounD in auDio SyStemS
Some inexpensive sound stereo systems and “Boom Boxes” may emit a buzzing sound
from their speakers when operated from this unit. This is likely to occur because the
power supply in the electronic device does not adequately filter higher frequency har-
monics generated by Modified Sine Wave produced by this unit. The solution is to use
higher quality sound system that incorporates higher quality of interference suppression
in its power supply.
SeCTIOn 5 |
Operation
5.1 operatinG moDeS
i
info
Please note that Transfer Relay K1 is a Single Pole Double Throw (SPDT) type of
a relay. Hence, during switching from the Grid to the Inverter and vice versa,
the Transfer relay K1 switches only the Line connection of the AC outlets. The
Neutral conductor of the Grid AC input and the Inverter Section are common
and are NoT switched.
5.1.1 inverter/charger mode
This is the Main operating Mode. In this mode, the unit is fed with 12V battery power
on the DC input side and with 120VAC, 60Hz Grid AC power on the AC input side. The
unit could be operating in the following sub-modes:
(i) Battery charger / Grid pass through mode:
As long as 120V Grid AC power is avail-
able, the unit operates in this mode as follows:
• Inverter Section will be in OFF condition. Green LED “INVERTER” (8, Fig 3.1) will
be off
• Battery Charger Section will be in ON condition. Green LED “CHARGER” (7, Fig
3.1) will be oN. It will provide 2-Stage Charging of the 12V Lead Acid battery at
up to 15A at Float voltage of 13.8V (See Section 2.5.2 for details)
SeCTIOn 4 |
Installation
Summary of Contents for SAM Series
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