Samlexpower PST-30S-12A User manual

PURE SINE WAVE

MODEL: PST-30S-12A

DC-AC INVERTERS

OWNERS MANUAL

Please read this manual before operating your inverter.

AC POWER SOURCE

INDEX

Page 2

Contents

General Safety & Installation ............................ 3

Warning ......................................................... 4

Description & Application ................................. 5

Installation ..................................................... 6

Making Connections ........................................ 6

Operating the Inverter ..................................... 7

Protections against abnormal conditions............ 8

Troubleshooting Guide ..................................... 9

Specifications................................................. 10

Limited Warranty............................................11

Warning! Exclamation mark ! indicates fundamental

safety measures to be observed when using

electrical equipment to avoid the danger of:

- electric shocks

- fire

- injury

General Safety and Installation Information

PLEASE READ THIS MANUAL BEFORE OPERATING

THIS INVERTER!

 Do not connect the output to other power sources!

 The inverter must only be used for the purpose specified by the manufacturer!

 When working on the inverter, always disconnect it from the mains!

 A failure of the protective device means that danger is still possible from parts which remain

under voltage during repair!

 Do not operate the inverter if housing or cables are damaged!

 Do not expose the inverter to direct sunlight in order to avoid additional heating!

 The inverter must be positioned and fixed in such a way that it cannot fall over or fall down!

 The inverter must be kept in a safe place out of the reach of children!

 The inverter must not be operated in a damp or wet environment!

 Air intake and outlets must not be blocked!

 Ensure good ventilation!

1.2 Cables:

•If cables have to be inserted through metal walls or other sharp-edged materials, use a cable

duct or cable bushing!

 Do not lay cables loosely or in sharp bends in electrically conductive materials!

 Do not pull the cables!

 Do not lay 115/230 VAC mains cable and 12/24 V DC cable together in the same cable duct!

 The specified minimum cable cross-section must be complied with!

 Fix cables properly!

 Lay cables in such a way that no one can trip over them!

 Lay cables in such a way that they are not exposed to the risk of damage!

1.1 About the unit itself:

1.3 Installation on Boats:

 Wrong installation of electrical units on a boat may lead to corrosion of the boat. Therefore,

please let a boat electrician carry out the installation of the inverter.

Page 3

PLEASE TAKE THE FOLLOWING PRECAU-

TIONS. FAILURE TO ABIDE BY THESE RE-

QUIREMENTS WILL VOID WARRANTY.

2.1 Never parallel the 115V AC output of the inverter with

the output from a generator or electric mains, or with the

output of another inverter. This will instantly burn the

inverter.

Although this inverter has an input OVER VOLTAGE SHUT DOWN at 15V,

input voltages higher than 15V will cause permanent damage. Ensure the

following when the battery is being charged simultaneously (the output

voltage of the charging device will be fed to the inverter):

nEnsure that the charging voltage of the alternator has not been set

above 15V.

nDo not use an unregulated solar panel. It’s voltage can reach up to 18V

on a very cold day. When using a regulated solar panel, its voltage

should not be set beyond 15V.

nDo not connect to a 24V battery.

nEnsure that the voltage of the battery charger does not exceed 15V in

any condition.

2.2 Do not reverse the polarity to the input connections.

This will permanently damage the inverter.

2.3 Do not connect the inverter to positive grounded

vehicle.

Page 4

WARNING

3.1 This inverter converts 12V DC from 12V battery system into

115V AC, 60Hz. The waveform of its AC output voltage is pure sine

wave like the wave form of the electric utility power supply.

(Cheaper commercial grade inverters have a quasi-sinewave

output wave form which is not suitable for sensitive equipment.)

Typical applications of this are:

DESCRIPTION AND APPLICATION

•Sensitive radio equipment

•Precision equipment

•Home theater

•Laser printers, Fax machines

•Radios, TV’s

•Recording equipment

•Musical instruments

•High-end stereos

•Computers

•Power Tools

3.2 The maximum continuous power rating of this inverter is 300

watts. It can provide a surge power of 500 watts (for a few

seconds) to start motor driven loads.

•Please note that motor driven loads (e.g.

power tools, pumps, compressors, refrigerator

etc.) require 5 to 10 times their normal running

power for initial starting. Ensure that the

starting power of these loads is not more than

500 watts.

•Please also note that the output power

indicated for microwave ovens is generally the

“cooking power”. The electrical input power in

this case will be almost 2 times the “cooking

power”. Ensure that the “electrical power” of

the microwave is less than the “continuous

power” output of the inverter.

REMARKS:

Page 5

3.3 A continuously running fan has been provided for forced

cooling.

Page 6

INSTALLATION & MAKING CONNECTIONS

1 115V AC output

2 LED indicator

3 On/Off switch

4 Input terminals (back of unit -not shown)

RED - Positive (+)

WHITE - Negative (-)

5 Cooling fan (back of unit - not shown)

6 Grounding lug (back of unit - not shown)

CAUTION!

Reverse polarity of input connection will blow the

fuse inside the inverter and may cause permanent

damage. Please ensure that the RED positive

terminal is connected to the positive(+) terminal of

the battery and the WHITE negative (-) terminal

is connected to the negative (-) terminal of the

battery. Damage due to reverse polarity is

not covered by warranty.

4.1 Ensure that the power ON/OFF switch is turned off.

4.2 Place the inverter in a cool & ventilated space. Ensure that there is

at least 10cm of open space around the inverter. Do not block the

openings on the inlet side of the cooling fan and the vent holes.

4.3

The color coded input side cable provided with the inverter is used to

connect the inverter to the battery. The red wire is positive (+) and the black

wire is negative (-). Pin type connectors connect to the inverter and the alligator

clips connect to the battery. Connect the pin on the red wire to the RED (+)

terminal of the inverter and the pin on the black wire to the WHITE (-) terminal

of the inverter. Now connect the black wire to the negative (-) terminal of the

battery and then the red wire to the positive (+) terminal of the battery. A

spark may be observed when connecting the positive wire to the

battery (+) due to charging of capacitors inside the inverter.

This is normal.

4.4

Ground the inverter using the Grounding Lug at the rear of the unit.

Page 7

OPERATING THE INVERTER

5.1 Switch off all loads connected to the output of the

inverter.

5.2 Push the power ON/OFF switch to ON position. The

L.E.D will turn green and AC output voltage will be available

under normal conditions. The cooling fan will be switched

on automatically.

5.3 Now switch on the load.

5.4 When running on full load for longer duration, keep the

vehicles engine running to prevent batteries from discharg-

ing.

5.5 CAUTION! Do not start the vehicles engine with the

inverter in ON condition. The inverter may shut down

during cranking due to drop in the battery voltage below the

inverters low battery shut down threshold of 10V.

Page 8

PROTECTIONS AGAINST ABNORMAL CONDITIONS

6.1 LOW BATTERY ALARM: In case the battery voltage

drops below 10.7V, a buzzer alarm will be sounded.

6.2 LOW BATTERY SHUTDOWN: In case the battery

voltage further drops to 10V or below, the inverter will shut down

the output voltage. Buzzer will be sounded and the LED will turn

Orange.

6.3 INPUT OVERVOLTAGE SHUT-DOWN: In case the

input voltage is 15V or higher, the output voltage will be shut

down. The LED will turn Orange. (CAUTION! This condition may

cause permanent damage.)

6.4 OUTPUT OVER-LOAD OR SHORT: If there is overload

or short in the output, the output voltage pulses will be clipped

and the voltage will drop. The LED will remain Green

6.5 REVERSE POLARITY SHUT-DOWN: In case the

positive (+) or negative(-) connections on the input side are

reversed, the 40A fuse inside the unit will blow. The LED will be

OFF. (CAUTION! This condition may cause permanent damage.)

6.6 OVER TEMPERATURE SHUT-DOWN: In case the unit

gets overheated due to inadequate cooling, the output voltage will

be shut-sown. The buzzer will be sounded and the LED will turn

Orange. Switch off the unit. Determine and remove the cause of

overheating . Switch on again when the unit has cooled down.

NOTE: Check the Troubleshooting Guide for possible

remedies to prevent the above abnormal condi-

tions.

Page 9

TROUBLESHOOTING GUIDE

7.1 PROBLEM: No output. LED is OFF. Buzzer is OFF.

• Break in battery connection

• 40A fuse inside the inverter is blown due to

reverse polarity or defect in the unit.

• Check connections are tight

• Replace the fuse. If blows again, the unit needs

to sent for repair.

7.2 PROBLEM: Output voltage is low. LED is GREEN.

Buzzer is OFF

REASON POSSIBLE REMEDY

• Output voltage pulses clipped due to

overload or short circuit in output • Reduce load/ Remove short

7.3 PROBLEM: No output. LED is ORANGE. Buzzer is ON

• Low battery shut-down due to discharged

battery or excessive voltage drop in the

cabling from the battery to the inverter.

• Over temperature shut down.

•Re-charge the battery

Ensure cable from battery to inverter is thick

enough to carry 30A (AWG#10)

Ensure connection from battery to the inverter is

tight and firm.

•Switch off the unit to cool down.

Improve ventilation and ensure fan inlet and

vent holes are not blocked.

Reduce load.

7.4 PROBLEM: No output. LED is ORANGE. Buzzer is OFF

Shut down due to input voltage beyond 15V. (CAUTION! This may

permantly damgae the inverter.)

•Inverter wrongly connected to 24V Battery

instead of 12V Battery.

•Charging alternator’s voltage has been set

beyond 15V, or it’s regulator has become

defective.

•Batteries are being charged simultaneously

from an unregulated solar panel set beyond

15V

•Batteries are connected to a battery charger

with its boost voltage set beyond 15V

•Ensure battery is 12V

•Set the voltage correctly or repair the alternator

•Ensure that the voltage of solar panel does not

exceed 15V

•Ensure that the boost voltage of the battery

charger is less than 15V

7.5 PROBLEM:

No output when load is switched on. LED is GREEN

•The starting current required by the load is

higher than the surge rating of 500 watts •Use inverter with appropriate surge rating.

7.6 PROBLEM:

There is no output when the vehicles engine is cranked.

•On cranking, the battery voltage drops

below 10V •Switch OFF the inverter when cranking the

engine.

SPECIFICATIONS

8.1 Input Voltage............................................ 10 to 15 V DC

8.2 Input Current at No Load ..........................700 milliamps

8.3 Output Voltage..................................... 115 V AC +/- 3%

8.4 Output Frequency ................................................. 60 Hz

8.5 Output Voltage Waveform.....................Pure Sine Wave

8.6 Total Harmonic distortion ..........................Less than 3%

8.7 Output Power

-Continuous ................................................... 300 Watts

-Surge (for few seconds) .............................................. 500 Watts

8.8 Low Battery Alarm .............................................. 10.7 V

8.9 Low Battery Shutdown ........................................... 10 V

8.10 Operating Ambient Temp. ..........................50oC +/- 5oC

8.11 Efficiency ............................................ Higher than 90%

8.12 Connection

-Input .......................Tubular type screw down terminals

-Output ................

Standard North American Outlet

(NEMA 5-15R)

8.13 Fuse (Input side).............................................. 32V,40A

8.14 Dimensions( L x W x H)................... 285 x 120 x 62mm

8.15 Weight ................................................ 1.75 kg / 3.9 lbs.

Note: Specifications are subject to change without notice.

Page 10

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