Samlexpower PST-120-12 User manual

DC-AC Inverter
Pure Sine Wave
120 Watt
PST-120-12
Please read this
manual BEFORE
installing your
Inverter
Owner's
Manual

2 | SAMLEX AMERICA INC.
SECTION 1 | Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important Safety and Operating Instructions. Please read before
using this unit .
The following safety symbols will be used in this manual to highlight safety
and information:
WARNING!
Indicates possibility of physical harm to the user in case of non-compliance.
!CAUTION!
Indicates possibility of damage to the equipment in case of non-compliance.
Please read these instructions before installing or operating the unit to prevent personal
injury or damage to the unit.
WARNINGS!
1. DO NOT OPEN TO REDUCE RISK OF FIRE OR ELECTRIC SHOCK. THERE ARE NO USER
SERVICEABLE PARTS INSIDE—REFER TO QUALIFIED SERVICE PERSONNEL.
2. It is recommended that you return your inverter to a qualied dealer for any service
or repair. Incorrect assembly may result in electric shock or re.
3. To reduce the risk of electric shock, unplug the DC input from the battery before
attempting any maintenance or cleaning.
4. To reduce risk of damage to electric plug and cord, pull by plug rather than cord when
disconnecting the unit.
5. An extension cord should not be used unless absolutely necessary. If an extension cord
is used, make sure that it has 2-prong, male plug (NEMA1-15P) and 2-prong, female
receptacle (NEMA1-15R). The size of the current carrying conductors should be such
that they are able to carry at least 2.5A for the length of the extension.
6. Place the unit in an area that will allow air to ow freely around the unit. DO NOT
block or obstruct vent openings or install the unit in an enclosed compartment.
7. Keep the unit away from moisture and water.
8. NEVER OPERATE TWO OR MORE UNITS IN PARALLEL.

9. Precautions when working with batteries.
- Batteries contain very corrosive diluted Sulphuric Acid as electrolyte.
Precautions should be taken to prevent contact with skin, eyes or clothing.
- Batteries generate Hydrogen and Oxygen during charging resulting in
evolution of explosive gas mixture. Care should be taken to ventilate the
battery area and follow the battery manufacturer’s recommendations.
- NEVER smoke or allow a spark or ame near the batteries.
- Use caution to reduce the risk of dropping a metal tool on the battery. It
could spark or short circuit the battery or other electrical parts and could
cause an explosion.
- Remove metal items like rings, bracelets and watches when working with bat-
teries. The batteries can produce a short circuit current high enough to weld a
ring or the like to metal and thus cause a severe burn.
- If you need to remove a battery, always remove the Negative Ground Terminal
from the battery rst. Make sure that all the accessories are OFF so that you do
not cause a spark.
!CAUTIONS!
1. Please refer to 12V Plug Adapter (8) at Fig 2.3. Please ensure that the battery is
connected with correct polarity - Positive of the battery to the tip of the Adapter (8)
and the Negative of the battery to the spring contacts of the Adapter (8). Reversal of
polarity will blow 15A fuse (5). Reversal of polarity may result in permanent damage
to the unit and to the load. DAMAGE DUE TO REVERSE POLARITY IS NOT COVERED
UNDER WARRANTY.
2. The inverter has no ON/OFF switch. It will switch ON automatically after plugging
into 12V battery through the 12V Plug Adapter. Unplug the inverter from the battery
when not in use, as it will drain 0.5A from the battery even if no load is connected.
3. Ensure that the unit is connected to 12V battery and the battery charger voltage is
≤ 16.5V. Higher DC input voltage will damage the unit.
SECTION 1 | Safety Instructions

4 | SAMLEX AMERICA INC.
DESCRIPTION
This inverter converts 12 VDC from a battery or from a suitable 12 VDC power source to
120 VAC, 60 Hz Pure Sine waveform at rated power of 120W.
DESIGN FEATURES
• PureSineWaveACoutputwithTotalHarmonicDistortion(THD)of<3%
• USBChargingPort:5V,500mAwithovervoltageprotection
• Compactandlightweight
• 3colorLEDindicatorforoperationalstatus
• Temperaturecontrolledfanforhigherefciency
• DetachableDCPowerCordwith12VPowerPlug
• Forusewithsmalllaptops,portableelectronics,smallTVsVCRs,soundsystemsand
other sensitive portable electronics
• ListedtoULSafetyStandardUL60601-1forMedicalElectricalEquipment
• ComplieswithFCCPart15(B),ClassB
LAYOUT
SECTION 2 | Description, Layout & Installation
Fig. 2.1: Front View
LEGEND
1. USB Charging Port (5 VDC / 500mA)
2. LED Status Indicator
3. AC Outlet – NEMA1-15R

15
11
4
5
1
2
3
SECTION 2 | Description, Layout & Dimensions
Fig. 2.2: Rear View
15
Fig. 2.3: DC Input Cord
9
10
7
8
Fig. 3: Plan, Elevations & Dimensions
6
LEGEND
1. USB (5 VDC / 500 mA)
2. LED Status Indicator
3. AC Outlet – NEMA1-15R
4. Slots for Fan Suction
5. DC Input Fuse - 32V, 15A
6. Battery Modular Inlet Connector
11. Slots for Fan Discharge
(Fan is located behind the slots)
LEGEND
4. Slots for Fan Suction
5. DC Input Fuse - Automotive Mini Blade Type
32V, 15A
6. Battery Modular Inlet Connector for DC Input
Power Cord
LEGEND
7. Detachable DC Input Power Cord (2')
8. 12V Plug Adaptor for Battery Side
9. Ferrite Bead for Noise Suppression
10. Mating Battery Modular Connector
for inverter side
Spring contacts connect to
Negative of 12V battery
Tip connects to
Positive of the 12V
battery
DIMENSIONS

6 | SAMLEX AMERICA INC.
SECTION 3 | Installation & Operation
INSTALLATION & OPERATION
- Ensure installation clearances are as shown in Fig. 3.1 above for proper cooling.
- A detachable 2' DC input power cord (7, Fig. 2.3) has been provided.
- This unit does not have a power ON/OFF switch. The unit will switch ON automatically as soon
as 12 VDC power is fed from the battery through the 12V plug adaptor (8, Fig. 2.3).
- Connect the detachable DC input power cord (7, Fig. 2.3) by sliding the mating
Battery Modular connector (10, Fig. 2.3) into the DC input connector (6, Fig. 2.2).
- Plug in the 12V Plug Adaptor (8, Fig. 2.3) of the DC input cord into the 12V outlet of the
battery supply.
- When the LED Status Indicator (2, Fig. 2.1) is GREEN, the inverter's AC Outlet (3, Fig. 2.1) and
USB port (1, Fig. 2.1) will have voltage outputs.
- Insert plug of your electrical appliance into the AC Outlet (3, Fig. 2.1) of the inverter.
- Remove the inverter from the 12V outlet when not in use. This will prevent unnecessary drain
from the battery.
Cooling Slots
Cooling Slots
Fig. 3.1: Installation Clearances

SECTION 3 | Installation & Operation
PROTECTIONS
Overload and short circuit on the AC output side
- If the load exceeds 120W, the output voltage will start dropping, but the unit will
NOT shut down.
- The LED Status Indicator (2, Fig. 2.1) will remain GREEN.
-The output voltage waveform will be distorted and will not have pure sine waveform,
but will be clipped at top and bottom and will look like a square waveform.
- There will be excessive RF noise.
- The until will reset automatically once the overload/short circuit is removed.
Over temperature due to fan failure or due to lack of cool replacement air
- The unit will shut down if temperature of hot spot inside the unit > 105°C. The LED
Status Indicator (2, Fig. 2.1) will turn ORANGE.
- The unit will reset automatically on cooling.
Low DC Input Voltage
- TheunitwillshutdownifDCinputvoltageis<10VDC.
- The LED Status Indicator (2, Fig. 2.1) will turn ORANGE.
- The unit will reset automatically when the voltage rises to 11.5 VDC.
High DC Input Voltage
- The unit will shut down if DC input voltage > 16.5 VDC.
- The LED Status Indicator (2, Fig. 2.1) turns ORANGE.
- Theunitwillresetautomaticallywhenvoltageis<16.5VDC.
Over Voltage On USB Port
- USB output is shut down if USB output ≥ 6.2 VDC.
- The LED Status Indicator (2, Fig. 2.1) will be OFF or RED.
Operational conditions indicated by the LED Status Indicator (2, Fig. 2.1) are given in
the following table:

8 | SAMLEX AMERICA INC.
LED STATUS
INDICATOR STATUS OF INVERTER STATUS OF USB PORT
OFF
AC output is available No output from USB port due to:
- Over voltage ≥6.2V
- USB section is defective
AC output is not available No DC input, check:
- 12V Plug Adaptor (8) is rmly
connected to the 12 VDC power
source
- 15A fuse (5) is not blown
GREEN AC output is available USB output is available
ORANGE
AC output is not available due to operation of one
or more of the following protections:
- Over temperature
- Low DC input voltage
- High DC input voltage
USB output is available
RED
AC output is not available due to operation of one
or more of the following protections:
- Over temperature
- Low DC input voltage
- High DC input voltage
No output from USB port due to:
- Over voltage ≥6.2V
- USB section is defective
SECTION 3 | Installation & Operation
Cooling
- The inverter has a temperature controlled fan for cooling.
- The fan will start once the temperature of the hot spot inside the unit exceeds
70°C / 158°F. Note: In cooler ambient temperature and/or at no/low loads, the hot spot
may not reach 70°C / 158°F and hence, the fan will be OFF.
- If the fan fails, or if adequate cool air change is not available, temperature of hot spot
will continue to rise and at ≥ 105°C / 221°F, AC output will be shut down. AC output
will be restored when the unit cools down sufciently.
- Place the unit in a cool, well ventilated space that has adequate cool replacement
air (Fig. 3.1).

SECTION 4 | Specications
MODEL NO. PST-120-12
AC OUTPUT
OUTPUT VOLTAGE 120 VAC ± 3%
OUTPUT CURRENT 1A
OUTPUT FREQUENCY 60 Hz ± 1%
TYPE OF OUTPUT WAVEFORM Pure Sine Wave
TOTAL HARMONIC DISTORTION OF
OUTPUT WAVEFORM < 3%
CONTINUOUS OUTPUT POWER
(At Power Factor = 1) 120 Watts
SURGE OUTPUT POWER (At Power Factor = 1) 120 Watts
PEAK EFFICIENCY 88%
AC OUTPUT CONNECTION NEMA1-15R Receptacle
DC INPUT
NOMINAL DC INPUT VOLTAGE 13 VDC
DC INPUT VOLTAGE RANGE 10 - 16.5 VDC
MAXIMUM INPUT CURRENT 15A
DC INPUT CURRENT AT NO LOAD < 500 mA
DC INPUT CONNECTION - Battery Modular Connector on the inverter
- 2 ft. detachable Power Cord with:
- AWG #14 wires
- Mating Battery Modular Connector on inverter side
- 12V Plug Adapter on battery side
DISPLAY 3 COLOR LED For Operational Conditions
PROTECTIONS
LOW DC INPUT VOLTAGE Shutdown at ≤ 10V; Auto-reset at ≥ 11.5V
HIGH DC INPUT VOLTAGE Shutdown at ≥ 16.5V; Auto-reset at ≤ 16.5V
SHORT CIRCUIT / OVERLOAD Output voltage drops, but does not shut down.
Auto-reset on removal.
OVER TEMPERATURE Shut down when internal hot spot is ≥ 105°C / 221°F.
Auto-reset on cooling
REVERSE POLARITY ON DC INPUT SIDE Automotive Mini Blade Fuse: 32V, 15A
HIGH DC OUTPUT OF USB PORT Shuts down USB Port at ≥ 6.2V
COOLING Temperature Controlled Fan
COMPLIANCE
SAFETY Intertek - ETL Listed. Conforms
to ANSI/UL Standard 60601-1.
EMI FCC Part 15(B), Class B
EN 55022: 2006; EN 55024: 1998+A1; 2001+A2; 2003
EMC EN61000-3-2: 2006
EN 61000-3-3: 1995+A1; 2001+A2; 2005
ENVIRONMENT OPERATING
TEMPERATURE RANGE 0˚C to 40˚C / 32˚F to 104˚F
(W x D x H), MM 105 x 189 x 30.5
DIMENSIONS &
WEIGHTS (W x D x H), INCHES 4.13 x 7.44 x 1.2
KG 0.453
LBS 1.0
SAMLEX AMERICA BATTERY CAR BATTERIES