Samlexpower SI-A1-VR1500 Manuale utente

SAMLEX

20 Years focused on power inverters

VR Series

POWER INVERTER

OWNER’S MANUAL

For models (115V):

SI-A1-VR1500

SI-A1-VR2000

SI-A1-VR3000

With Advanced Technology!!!

THIS MANUAL CONTAINS IMPORTANT INFORMATION REGARDING

SAFETY, OPERATION, MAINTENANCE AND STORAGE OF THIS

PRODUCT. BEFORE USE, READ AND UNDERSTAND ALL CAUTIONS,

WARNINGS, INSTRUCTIONS AND PRODUCT LABELS, PLUS YOUR

VEHICLE’S BATTERY MANUFACTURER GUIDELINES. FAILURE TO DO

SO COULD RESULT IN INJURYAND/OR PROPERTY DAMAGE.

IMPORTANT SAFETY INSTRUCTIONS

To ensure reliable service, your power inverter must be installed and used

properly. Please read the installation and operating instructions thoroughly prior

to installation and use. Pay particular attention to the WARNING and CAUTION

statements in this manual. The CAUTION statements advise against certain

conditions and practices that may result in damage to your inverter. The

WARNING statements identify conditions or practices that may result in personal

injury. Read All Instructions Before Using This Power Inverter!

WARNINGS:

TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, EXPLOSION OR INJURY:

1. Do not connect to AC distribution wiring.

2. Remove appliance plug from outlet strip or turn off inverter before working on

the appliance. Multiple outlet power strips with switches and circuit breakers

only interrupt power to the “hot” receptacle terminals. The “neutral” terminals

remain powered with respect to the “ground” terminals.

3. Do not make any electrical connections or disconnections in areas

designated as IGNITION PROTECTED. This includes 12 V DC cigarette plug

connections, and terminal connections.

4. This is not a toy - keep away from children.

5. DO NOT install object into air vents.

CAUTIONS:

1. Do not use with positive ground electrical systems (the majority of modern

automobiles, RVs, trucks and boats are negative ground). Reverse polarity

connection will result in a blown fuse and may cause permanent

damage to the inverter.

2. This inverter will not operate high wattage appliances over the output power

limit or surge power limit.

3. Grounding the neutral will cause the inverter to shut down. Do not operate

this inverter if it is wet. Do not install in engine compartment – please install in

a well ventilated area.

4. This inverter is not tested for use with medical devices.

IMPORTANT CABLE INFORMATION

Substantial power loss and reduced battery operating time results from inverters

installed with cables that are not able to supply full power. Symptoms of low

battery power can result from cables that are either excessively long or an

insufficient gauge. The installer/operator should be especially aware of the

requirements to maintain secure, tight, water-resistant electrical connections

and to provide for strain relief for DC cables and appliance wiring. Cable

insulation must be the appropriate type for the environment.

1．INTRODUCTION

Your new SAMLEX VR-Series power inverter is one in a series of the most

advanced DC to AC inverters available today. With proper care and

appropriate usage, it will give you years of dependable service in your car,

truck, RV or boat.

VR series inverters designed with a universal protection circuit that provide

added safety features include automatic shutdown, earth fault protection and a

low battery alarm to prevent damage to your battery.

This power inverter is configured with the latest low interference technology

(L.I.T.),

Universal Protection Circuit

(UP-Circuit)

and

Soft

Start circuit

to improve inverter operation.

UP-Circuit

provides full automatic inverter and battery protection. This

includes overheat protection, battery protection, overload protection, short

circuit protection and earth fault protection.

L.I.T.

greatly improves the interference problems of common power inverter.

Before introduction of L.I.T., signal interference may occur on TV pictures,

audio system or radio equipments. Now you can enjoy a clean and powerful

AC source!

Soft Start Circuit

provides three major features. First, gradual

voltage ramp-up during inverter start-up. This eliminates failed cold starts

under load. Second, output that momentarily dips in voltage and quickly

recovers. This eliminates most shutdowns from momentary overloads.

2．HOW YOUR INVERTER WORKS

The inverter converts low voltage DC (Direct Current) from a battery or other

power source to 115 volt AC (Alternating Current) household power.

PRINCIPLE OF OPERATION

The inverter converts power in two stages. The first stage is a DC to DC

conversion process that raises the low voltage DC at the inverter input to

higher volts DC. The second stage is the actual inverter stage that converts the

high voltage DC into 115 volts, 60 Hz AC(rms). The DC-to-DC converter stage

uses modern high frequency power conversion techniques that have replaced

the bulky transformers found in less technologically-advanced models. The

inverter stage uses advanced power MOSFET transistors in a full bridge

configuration.

THE OUTPUT WAVEFORM

The AC output waveform of the VR-series inverter is known as “modified sine

wave”. It is a waveform that has characteristics similar to the sine wave shape

of utility power. This type of waveform is suitable for most AC loads, including

linear and switching power supplies used in electronic equipment,

transformers, and motors. (See Figure 4).

The modified sine wave produced by the VR-series inverter has an RMS (root

mean square) voltage of 115 volts, which is the same as standard household

power. Most AC voltmeters (both digital and analog) are sensitive to the

average value of the waveform rather than the RMS value. They are calibrated

for RMS voltage under the assumption that the waveform measured will be a

pure sine wave. These meters will not read the RMS voltage of a modified sine

wave correctly. They will read about 20 to 30 volts low when measuring the

output of the inverter. For accurate measurement of the output voltage of this

unit, use a true RMS reading voltmeter such as a Fluke 87III, Fluke 8060A,

Fluke 77/99 series or Beckman 4410.

FIGURE 4 : Modified Sine Wave and Sine Wave Comparison

3．INSTALLATION / ENVIRONMENTS

POWER SOURCE REQUIREMENTS

The power source must provide between 10.5 and 14.5 volts DC and must be

able to supply the necessary current to operate the load. The power source

may be a battery or a well-regulated DC power supply. To obtain a rough

estimate of the current (in amperes) the power source must deliver, simply

divide the power consumption of the load (in watts AC) by 10.

Example: lf a load is rated at 100 watts AC, the power source must be able to deliver: 100 /

10=10A

The inverter will provide you with up to 1.5/2.0/3.0 KVA of continuous, electrical

power (3.0/4.0/6.0 KVA peak) at 115 VAC when powered by a 12.5 VDC source

such as is found in a vehicle or multiple battery configurations as shown in

FIGURE 5. This manual does not describe all of the possible types of battery

configurations, battery charging configurations and battery isolation

configurations.

To properly operate the inverter the DC power source must provide between

11.0 and 14.5 VDC and nominally at 300 Amps. This DC power source must be

a well-regulated DC power supply as typically found in vehicular and deep-cycle

marine batteries. The DC power source may also be two 12 volt batteries

connected in parallel. On larger applications the power source may be several

batteries connected in parallel as shown on FIGURE 5.

FIGURE 5

INSTALLATION NOTES:

WARNING: Keeping ventilation when using batteries. Batteries may generate

flammable gas during charging or discharging.

The inverter has four slots in its mounting bracket that allow the unit to be

fastened against a bulkhead, floor, wall or other flat surface. Ideally, the

mounting surface should be cool to the touch.

It is more electrically efficient to use longer AC wiring than DC wiring, so

install the inverter as close as possible to the 12 VDC power source.

The inverter can be operated in any position, however, if it is to be mounted on a

wall, mount it horizontally so that indicators, switches, outlets and terminal

blocks located on the front panel are visible and accessible. If inverter is to be

installed in a moving vehicle, we strongly recommends that the inverter be

shock-mounted either on the floor (in a clear, safe area) or on a secure flat

surface.

CAUTION: The inverter must be connected only to batteries with a nominal

output voltage of 12volts. The unit will not operate from a 6 volt battery, and will

sustain permanent damage if connected to a 24 volt battery.

CAUTION: Loose connectors may cause overheated wires and melted

insulation. Check to make sure you have not reversed the polarity.

Reverse polarity connection will result in a blown fuse and may cause

permanent damage to the inverter.

CONNECTING TO A POWER SOURCE

Use ( #2 AWG for VR1500; 2x #2 AWG for VR2000/3000) wire for if the

inverter to power source connection is 1.5 meters or less. For longer cable

lengths, consult technician for appropriate cable size. In either case,

protect the positive (+) wire from shorts by installing a fuse or circuit

breaker close to the DC power source (battery) terminal. The fuse should

choose 200A for VR1500, 300A for VR2000, 400A for VR3000.

1. Check to be sure the inverter’s power switch is turned off and that no

flammable fumes are present.

2. Identify the positive (+) and negative (-) DC power source (battery)

terminals.

3. Install a fuse holder or breaker close to the positive (+) terminal of the

DC source (battery).

4. Connect a length of wire on one side of the fuse holder or circuit

breaker. Connect the other end if the wire to the positive (+) terminal of

the inverter. 6

5. Connect a length of wire between the inverter’s negative (-) terminal

and the DC power source negative (-) terminal.

6. Connect a short length of wire to the other terminal of the fuse holder

or circuit breaker. Mark it “POSITIVE” or “+”.

7. Connect the free end of the fuse or breaker wire to the positive terminal

of the DC power source (battery).

8. Insert a suitable fuse in the fuse holder.

9. Check to be sure that all connections between battery clips, terminals

and fuse are secure and tight.

10. Test the inverter by turning it on and plugging in a 100 watt lamp or

equipment.

11. If the inverter is not properly operating, then refer to the

troubleshooting sections of this manual.

CAUTION: Loose connectors may cause overheated wires and

melted insulation.

CONNECTION TO LOAD

The inverter is equipped with two universal AC power receptacles. Plug the

cord from the equipment you wish to operate into the AC receptacle. The

green LED indicator lights to indicate that the inverter is functioning. Make sure

the combined load requirement of your equipment does not exceed inverter’s

output rating.

The inverter is engineered to be connected directly to standard electrical and

electronic equipment in the manner described above. Do not connect the

power inverter to household or RV AC distribution wiring. Do not connect the

power inverter to any AC load circuit in which the neutral conductor is

connected to ground (earth) or to the negative of the DC (battery) source.

WARNING: Do not connect to AC distribution wiring.

OPERATING ENVIRONMENT

For best operating results, the inverter should be placed on flat surface, such

as the ground, car floor, or other solid surface. The power cord allows easy

positioning of the inverter. The inverter should only be used in locations that

meet the following criteria:

DRY- Do not allow water and/or other liquids to come into contact with the

power inverter. In all marine applications, do not install the inverter below or

near the waterline and keep the inverter away from moisture or water.

COOL – Ambient air temperature should be between 30 degrees F (-1 degree

C) non-condensing, and 105 degrees F (40 degrees C). Do not place the

inverter on or near a heating vent or any piece of equipment which is

generating heat above room temperature. Keep the inverter away from direct

sunlight, if at all possible.

VENTILATED – Keep the area surrounding the inverter clear to ensure free air

circulation around the unit. Do not place items on or over the inverter during

operation. A fan is helpful if the inverter is operating at maximum power

outputs for extended periods of time. The unit will shut down if the internal

temperature exceeds operating temperatures. The unit will restart after it

cools.

SAFE – Do not use the inverter near flammable materials or in any locations

that may accumulate flammable fumes of gases.

4 . OPERATING TIPS

RATED VERSUS ACTUAL CURRENT DRAW OF EQUIPMENT

Most electrical tools, appliances and audio/video equipment have labels that

indicate the power consumption in amps or watts. Be sure that the power

consumption of the item you wish to operate is rated at 1500/2000/3000 watts

or less. (If the power consumption is rated in amps AC, simply multiply by the

AC volts (115) to determine the wattage). Resistive loads are the easiest for

the inverter to run. However, larger resistive loads, such as electric stoves or

heaters, usually require more wattage than the inverter can deliver. Inductive

loads, such as TV’s and stereos, require more current to operate than do

resistive loads of the same wattage rating. Induction motors, as well as

some televisions, may require 2 to 6 times their wattage rating to start up.

The most demanding in this category are those that start under load, such as

compressors and pumps.

DETERMINING BATTERY SIZE

To determine the minimum battery size that you will need to operate appliances

from the power inverters, follow these steps:

1. Determine the wattage of each appliance and/or tool you will need to

simultaneously operate from the inverter. To do this, read the labels on the

equipment to be operated. Usually, power consumption is shown in watts.

If it is shown in amps, multiply by 115 to determine the wattage.

2. Estimate the number of hours the equipment will be in use between

battery recharges.

3. Determine the total watt-hours of energy use, the total running time and

the average power consumption.

To get an estimate of the current (in amps) that the battery must be capable of

delivering, divide the load consumption power (in watts) by (10).

Keep in mind that most appliances are not operating for long periods of time. For

example, a typical home-use coffee maker draws 500 watts during its brew time

of 5 minutes, but it maintains the temperature of the pot at about 100 watts.

Typical use of a microwave is only for a few minutes, sometimes at low power.

Some exceptions to brief operating times are lamps, TVs and computers.

In most instances, the inverter can be left connected to the battery when not in

use, make sure power switch is in the OFF position.

5. PROTECTIVE FEATURES OF THE INVERTER

Your inverter monitors the following potentially hazardous conditions:

OVER TEMPERATURE PROTECTION – If the temperature inside the inverter

is too high, the unit will automatically shut down. Allow the unit to cool for at

least 15 minutes before restarting after a heat-related shutdown. Unplug unit

while cooling.

LOW BATTERY VOLTAGE PROTECTION - This condition is not harmful to the

inverter but could damage the power source. The inverter automatically shuts

down when input voltage drops to 10.5 volts. When the condition is corrected,

the unit may be restarted.

OVER VOLTAGE PROTECTION – The inverter will automatically shut down

when the input voltage exceeds 15 volts DC. Input voltage exceeds 16 volts

could damage the inverter.

OVERLOAD PROTECTION – The inverter will automatically shut down when

the continuous draw exceeds rated watts.

SHORT CIRCUIT PROTECTION – The inverter will shut down.

EARTH FAULT PROTECTION – This inverter comply with the standard current

leakage allowance. When large current leakage to earth terminal occurs, the

protection circuit activated and shut down the inverter, which prevent electric

shock to human. Turn OFF the inverter, unplug the fault AC appliance and then

turn ON is the only way to restart it.

LOW BATTERY ALARM – An alarm will sound when the voltage from the

battery drops to 10.9 volts. This is an indication that the battery needs to be

recharged. The user should stop operation of the electronic device at this time

since the inverter will shut down automatically shortly thereafter. Start your

engine to recharge the battery.

If the low voltage alarm sounds when the battery is fully charged, follow the

steps for solving lack of output power in the Troubleshooting guide. The alarm

may sound when the inverter is overloaded, in thermal shutdown, or if there is

an excessive voltage drop between the battery and inverter.

NOTE: It is normal for the alarm to sound while the unit is being connected to,

or disconnected from, the power source. This is not indicative of a problem.

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