Samlexpower PST-1500-48, Owner'S Manual

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4 | SAMLEX AMERICA INC. SAMLEX AMERICA INC. | 5
SECTION 1 | Safety Instructions
!
CAUTION!
To prevent possibility of paralleling and severe damage to the unit, never use a
simple jumper cable with a male plug on both ends to connect the AC output
of the unit to a handy wall receptacle in the home / RV.
Preventing DC Input Over Voltage
It is to be ensured that the DC input voltage of these units is less than 64.0 VDC to pre-
vent permanent damage to the unit. Please observe the following precautions:
• Ensure that the maximum charging voltage of the external battery charger / alterna-
tor / solar charge controller is less than 64.0 VDC.
• Do not use unregulated solar panels to charge the battery connected to this unit. Under
cold ambient temperatures, the output of 48V nominal solar panel / array may reach >
88 VDC. Always use a charge controller between the solar panel and the battery.
• When using Diversion Charge Control Mode in a charge controller, the solar / wind /
hydro source is directly connected to the battery bank. In this case, the controller will
divert excess current to an external load. As the battery charges, the diversion duty
cycle will increase. When the battery is fully charged, all the source energy will flow
into the diversion load if there are no other loads. The charge controller will discon-
nect the diversion load if the current rating of the controller is exceeded. Disconnec-
tion of the diversion load may damage the battery as well as the inverter or other DC
loads connected to the battery due to high voltages generated during conditions of
high winds (for wind generators), high water flow rates (for hydro generators). It is,
therefore, to be ensured that the diversion load is sized correctly to prevent the above
over voltage conditions.
• These units are designed to operate from Lead Acid Battery System with nominal
voltage of 48 VDC. Do not operate these units from a battery system voltage higher /
lower than 48 VDC nominal.
Preventing Reverse Polarity on the Input Side
When making battery connections on the input side, make sure that the polarity of bat-
tery connections is correct (Connect the Positive of the battery to the Positive terminal
of the unit and the Negative of the battery to the Negative terminal of the unit). If the
input is connected in reverse polarity, the external DC fuse and the DC fuses inside the
inverter will blow and may also cause permanent damage to the inverter.
!
CAUTION!
Damage caused by reverse polarity is not covered by warranty.
Use of External Fuse in DC Input Circuit
Use Class-T or equivalent fuse of appropriate capacity within 7" of the battery Positive ter-
minal. This fuse is required to protect DC input cable run from damage due to short circuit
along the length of the cable. Please read instructions under Section 8.4.5 - Installation.