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DC Volts ON, LED (5) (green) ONPressing the Mode button (7) will change the information being displayed byLEDs (1) – (4). Press the Mode button once, the green LED (5) will be ON.This will turn LEDs (1) – (4) into a battery voltmeter. The voltage of yourbattery will be indicated by the figures to the left of LEDS (1) – (4). If allLEDs are ON then the battery voltage is greater than 24 Volt.The LEDs will turn OFF one by one as the battery voltage drops. When thebattery voltage is below 21 volts, LED (4) will flash.To return to Status, quickly press the mode button (7) once.How to make use of a VoltmeterBatteries vary enormously in size capacity and quality andcan be severely affected by age. By keeping an eye on thevoltmeter it will give you a guide to the amount of charge inyour battery. Where possible, you should keep your batteryvolts above 24 volts at all times. If you are using a large loadfor a short time, the battery volts will probably drop below24 volts. This is normal and OK as long as the battery voltsreturn to 24 volts when the load is turned off.Auto Start Adjust LED (6) (red) FlashingIt is sometimes necessary to adjust the auto start sensitivity to overcomewhat is called “Phantom Loads”. A phantom load is a load that tricks theinverter into thinking it should be ON instead of in SLEEP mode.The wiring of a house or a portable stereo system in standby are goodexamples of a phantom load. These loads serve no purpose but yet canincrease battery drain by bringing the inverter ON. Hold the Mode button (7)down until LED (6) begins to flash, (approximately 1 second) indicating youare ready to adjust this setting. The SE12 will leave the factory with a settingof 4 watts. Now press the Mode button (7) until the desired value is sought.LEDs (1) – (4) will return to either Status or Voltmeter after 20 seconds.SE12 Manual11Selectronic Australia

IndicatorSettingLED (1) ONLED (2) ONLED (3) ONLED (4) ONALL LEDs ON16 watts12 watts8 watts4 wattsInverter will remain ON at all times. This couldbe used if a fax machine or VCR is required tostay on at all times. Be aware that this will usemore power from your battery.Low Volts Adjust LED (6) (red) ONTo avoid total discharging of your battery the SE12 shuts down at a pre-setlow voltage. As all batteries are different, so too is the minimum voltage theyshould be discharged to. The SE12 will leave the factory with a setting of22.0 volts, change this setting if required.Hold the Mode button (7) down until LED (6) comes ON, (approximately 2seconds) indicating you are ready to adjust this setting. Now press the Modebutton (7) until the desired value is sought. LEDs (1) – (4) will return toeither Status or Voltmeter after 20 seconds.IndicatorSettingLED (1) ONLED (2) ONLED (3) ONLED (4) ON23.0 volts22.0 volts21.0 volts20.0 voltsSE12 Manual12Selectronic Australia

MaintenanceInverterPeriodic maintenance of your SE12 inverter involves little more thanchecking for any obstructions to the black cooling heatsink at the rear of theinverter. The heatsink must be cleared of any accumulated foreign matterthat may have lodged itself between the fins since the last maintenancecheck, e.g. insect nests. Also verify that airflow around the inverter has notbecome restricted, particularly on the right hand side where the fan draws inair through the louvres.Batteries1. Every week, carry out a thorough visual inspection of all batterywiring, taking particular note of the condition of inter-connectionsbetween cells. This maintenance should be carried out in conjunctionwith the battery manufacturers recommended maintenance.Safety HintWhen working on batteries of such high capacity it isessential that you wear protective clothing, some form of eyeprotection and rubber-soled work boots. Please regard yourbatteries with a great deal of caution, and if in any doubt,entrust this work to your supplier / installer.2.Check that the stainless steel inter-connecting bolts are tight and haveno corrosion. If corrosion is evident, carefully follow the followingprocedure. Disconnect the system battery fuse before working on the batterybank. Unbolt the stainless steel bolts and nuts of any corrodedconnections and thoroughly clean the joint with a wire brush orfile, taking extreme care not to short circuit any battery cells withany tools. Re-assemble and smear a small amount of Vaseline or similargrease over the surface of the joint to slow down any futurecorrosion.SE12 Manual13Selectronic Australia

3.Once a fortnight or as directed in your battery manufacturer, check thespecific gravity (SG) of each battery cell using a hydrometer, to ensurethat all cells are performing correctly and are properly charged. Anyserious imbalance should be reported to your system designer in caseremedial action needs to be taken.Solar Modules Periodically check for a build up of dust or any other foreign matter.Wind Generator As wind generators are mechanical devices that are subject to weathervariances, proper maintenance is essential for reliable service. Carefully follow the manufacturers maintenance guidelines; if unsurecontact your supplier.Handy HintsIt is very important that you become familiar with thefunctioning of your inverter. From a distance, it is not alwayseasy to know what if the inverter is On or in Sleep mode. Aneasy way to determine this is to plug a small child's night-light(neon type) into a power point that is easily visible, or replacethis power point with a safety type with a neon indicator. Thiswill indicate the inverter's operation by flashing when theinverter is in SLEEP mode and remaining ON when theinverter is brought ON by a load.SE12 Manual14Selectronic Australia

Radio Frequency InterferenceFor many years, Radio Frequency Interference (RFI) has been an annoyingproblem for owners of Inverters. RFI in a domestic situation can cause noiseon an AM radio receiver. The degree of interference can vary dramaticallyfrom site to site. Below are a few suggestions to help reduce the effects ofRFI in your installation. It is not essential that you follow these guidelines,however, they will give you the best chance of reducing any RFI, particularlyon AM radio.It is recommended that the power system including the inverter be housed atleast 10 metres from the home.Ensure a good earth stake is placed as close to the inverter as possible. Thisearth stake should be in a moist area and should be connected to the inverterearth, see page 2 for wiring details.Avoid running DC cables into the home, if at all possible. If this cannot beavoided, run DC and AC in separate conduits separated by as much distanceas practicable. All DC wiring should also be kept as short as possible.Connect battery negative to earth.AM radios should be powered from their own self-contained batteries andkept as far away as possible from AC or DC wiring within walls. Make surethat your AM radio has maximum signal strength. This will help your radioto reject any unwanted noise being produced by your inverter, regulator,controllers or DC lighting. If possible, try moving the radio around toimprove the signal strength or use an external aerial. Some of today'sbuilding materials such as steel roofs and foil insulation may form a barrierto incoming radio signals. If an external aerial is required, it should be on theoutside of the home, mounted as high as practicable and as far from theinverter as possible. Connection from the aerial to the radio should be via alow loss coaxial cable.Please note the aerial must be an AM RADIO type; a TV aerial willnot work.SE12 Manual15Selectronic Australia

Fault FindingNo indicators ON when power is first appliedWhen first connected, if the SE12 shows no indicators the batteryconnections may be reversed. Check that the red battery wire (10) isconnected to the battery positive, and the black battery wire (11) is connectedto the battery negative. Remember there is a 3 second delay before power isavailable after switch ON.Inverter stays ON when no appliance is being usedThis can be a common problem known as a “Phantom Load”, but can beeasily overcome. Some appliances will need to be switched off at the powerpoint as they may still represent a small load despite being switched off atthe appliance.Check again to make sure that there are no appliances left ON, thesequentially switch off appliances at the wall and by watching your nightlight (as described in Handy Hint, check to see if the SE12 returns to pulsing(SLEEP) mode after a 10 second delay. Once you have found the offendingappliance, increase the sensitivity of the “Auto Start” (see page 11) until theinverter turns OFF. Once this is done re check that small loads will still bringthe inverter ON when required.Inverter shuts down during the middle of the day, and comesback ON late in the afternoonThis is more than likely caused by high battery volts during peak chargingtimes from Solar Panels. Battery volts should never exceed 34 volts. If this isthe case, have your Solar Regulator checked.WarningAs a matter of safety, Selectronic strongly recommend that all fixedinstallations be designed and installed by appropriately qualified person. The SolarEnergy Industries Association in your state or territory can provide names of accreditedsystem designers and installers.The output voltage from an inverter is as lethal as mains electricity.All AC wiring MUST be carried out by an accredited electrician and must conform toAS3000 and/or any relevant local standards.SE12 Manual16Selectronic Australia

Product Warranty ConditionsSelectronic Australia Pty Ltd warrants your SE12 inverter to be freefrom defects in materials and workmanship under normal use andservice, for an initial period of two (2) years.This warranty is applicable only from the date of original purchase.All parts will be replaced or repaired free of charge within thisperiod. Travelling time for field service personnel is not coveredunder this warranty. If no authorised field service personnel areavailable, the unit shall be returned to any authorised service centres,this must be done at the owner’s cost. There will be no charge for thereturn of the inverter. Repairs carried out by unauthorised servicecentres will not be covered under warranty.In the event of unauthorised exporting, Selectronic reserve the rightto refuse warranty claims outside Australia or New Zealand.The provision of this warranty shall not apply if the unit has beensubject to misuse, neglect, act’s of God, accidental damage or hasbeen used for a purpose for which it is not designed.Charges to the point of purchase and the cost of any repairs resultingfrom damages occurring during this freighting will be borne by theowner. Any alterations or repairs by unauthorised parties will voidyour warranty.To ensure fast efficient handling of any warranty claims, pleasecomplete and return your reply paid warranty card within 30 daysfrom date of purchase.SE12 Manual17Selectronic Australia

SE12 24 Volt SpecificationsInverter Type Microprocessor control circuit with PWM full bridge powerstage. True sine wave AC outputCurrent draw from BatteryConditionAmperageAuto Start SLEEP mode (average)Inverter ON, with no LoadMaximum Continuous Load (700 Watt)Half hour rating (900 Watt)Surge rating (2000 Watt)0.055 Amps0.35 Amps35.0 Amps45.0 Amps100 AmpsInverter Power Ratings @ 25º CConditionTotal Appliance RatingContinuousHalf hour ratingSurge rating (5 seconds)700 Watt900 Watt2000 WattAuto StartTypeMinimum Load to StartResponse Time Normal Pulse ModePower Save ModePulsing AC4 watts – 16 watts user adjustable1 second maximum1.5 seconds maximumBattery Voltage RangeVoltageLow DC Volts Cut Out–10 second delayLow DC Volts Cut InHigh DC Volts Cut Out–Instantaneous20 – 23 volts user adjustable24 volt34 voltsSE12 Manual18Selectronic Australia

Inverter Efficiency @ 12 volts40 watts100 watts200 watts400 watts700 watts77% efficiency85% efficiency90% efficiency88% efficiency84% efficiencyBattery CablesLengthDiameterLug1.5 metres13mm28mm holeMiscellaneous SpecificationsReverse Polarity ProtectionOutput Voltage Accuracy 0-700 wattsOutput FrequencyTotal Harmonic DistortionOperating Temperature RangeTransformer TypeCooling MethodPower PointWeightShipping WeightChassis MaterialChassis CoatingSizeSE12 Manual19Full Electronic Protection 4% @ 24 volt input50Hz 0.01% 4%-10º C to 50º CToroidalConvectionTwin 10 Amp9.0 kg9.6 kgZinc Coated SteelPowder Coated225W x 160H x 310mm DSelectronic Australia

Selectronic Authorised Service NetworkIf service is required, contact your supplier or return your inverter in itsoriginal carton with proof of purchase to any of the following service centres.Selectronic Australia Pty Ltd25 Holloway DriveBayswaterVictoria 3153AustraliaPh: 03 9762 4822Fax: 03 9762 9646service@selectronic.com.auRainbow Power Company1 Alternative WayNimbinNSW 2480AustraliaPh: 02 6689 1430Fax: 02 6689 1109Burley TV Service278 Edmondson Ave.AustralNSW 2171AustraliaPh: 02 9606-0279Amelec Marine Sales16 Parkinson LaneO’ConnorWA 6163AustraliaPh: 08 9331 3100Fax: 08 9331 5150amelec@tpgi.com.auRF AnalysisHarness Cask RoadDorrigoNSW 2453AustraliaPh: 02 6657 8003Fax: 02 6657 8002Reid Technology Ltd3-5 Auburn StreetTakapunaNorth Shore CityAucklandNZPh: 9 489-8100Fax: 9 489-8585ps@reidtechnology.co.nzSE12 Manual20Selectronic Australia

Notes:SE12 Manual21Selectronic Australia

SELECTRONICAU S T R A L I A25 Holloway Drive Bayswater, Victoria 3153 AustraliaPhone 03 9762 4822 Fax 03 9762 9646 Email sales@selectronic.com.auPart No ST-M-SE122 REV-3 9/8/2000SE12 Manual22Selectronic Australia

To provide a 24 volt supply to your SE12 you will need to join more than one battery together in series. Where batteries are joined in series, add the voltage of each battery. The capacity will equal the capacity of the smallest battery. 2 x 12 Volt 100 Ah batteries connected in series would have a total capacity of 24 Volts - 100 Ah.