SamplexPower SAM Series, Owner'S Manual

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SAMLEX AMERICA INC. | 17
!
caution!
Do not connect AC output from the NeMA5-15r outlets to AC distribution wiring
where the Neutral is bonded to earth Ground. The Inverter will see this as abnor-
mal condition of Ground fault / leakage and will shut down!
4.6 Dc SiDe connectionS
4.6.1 General information
1. ensure that the unit is connected to 12V battery system. connection to 24v Bat-
tery SyStem WiLL DamaGe tHe unit.
2. Do not use additional external charging source to charge the battery at voltage > 15.5V.
3. Do not use with Positive Grounded Electrical Systems (the majority of modern auto
-
mobiles, rVs, trucks and boats use Negative Grounded electrical Systems).
4. observe correct polarity when connecting the DC input terminals of the unit to the
battery. Connect Positive of the battery to the Positive input terminal of the unit
and the Negative of the battery to the Negative input terminal of the unit. reverse
polarity connection will result in a blown fuse and may cause permanent damage to
the unit.
Damage due to reverse polarity is not covered under warranty.
4.6.2 requirements of Dc input power Source
approx. Dc input current required by inverter = power consumed by the ac Load
in Watts ÷ 10.
DC current drawn from the battery when delivering the rated power of 1500W is 150A.
12 VDC input to the unit should be fed from a 12V battery System or from a 12.5 VDC
to 15 VDC regulated DC Power Supply. If a DC Power Supply is used, its output current
capacity should be more than 2 times the maximum DC input current drawn by the
inverter. further explanation of operation is based on Dc input power from a 12v bat-
tery. It is recommended that Deep Cycle Type batteries are used. for detailed technical
information on types, construction, specifications, sizing, connections and charging /
discharging of Lead Acid batteries, please read online White paper titled “Batteries,
chargers and alternators” at www.samlexamerica.com under Support/White papers.
4.6.3 Dc input power terminals
Custom made DC input terminals using M9 Nut / bolt arrangement have been provided for
connecting DC input cables (11, 12 in Fig 3.1). The terminals are protected by plastic covers
(11A, 12A in Fig 3.1).
4.6.4 important Wiring/cabling information
Although wires and cables are good conductors of electric current, they do have some
resistance, which is directly proportional to the length and inversely proportional to the
thickness (diameter) i.e. resistance increases in thinner and longer wires. Current flowing
through resistance produces heat. Cables and wires are covered with insulating material
that can withstand a specified temperature of the conductor under specified condi-
tions. To ensure that the insulation is not damaged due to excessive overheating, each
wire size has a maximum allowable current carrying capacity called "Ampacity" which is
SeCTIOn 4 | Installation