SPI1200i-12SS - Selectronic Australia
Contents
1. its standby mode even when all appliances are turned off This is usually caused by high wiring capacitance which the inverter cannot distinguish from a small appliance Check also that there are no phantom loads such as small DC adapters which will keep the inverter switched on To Alter Demand Start Sensitivity WARNING This procedure should be carried out by a licensed electrician 1 Disconnect at least one battery lead 2 Unscrew all 12 Philips head screws and remove the lid 3 Locate switch S3 near the 2 pin connector J7 If necessary bend the front panel outwards to provide access to the switch 4 Select the required switch setting as shown below S3 S3 DEMAND START DEMAND START Fi 2 3 4W 8W 4W Setting 8W Setting 9 WARNING The voltage from an inverter is just as lethal as land line power It is therefore absolutely necessary for your safety to ensure that all Remote Area power system installations meet and comply with the relevant provisions and requirements of AS3000 wiring standards It is imperative that you ensure also that only Registered Electrical contractors or licensed electrical mechanics are permitted to install or check any wiring in your installation 10 PRODUCT WARRANTY CONDITIONS Selectronic Australia Pty Ltd warrants your SPI 1200i 12N S inverter to be free from defects in materials and workmanship under normal use and service for two 2 years The warranty is a2. of around 4400 individual MOSFET cells connected in parallel to give a very high current handling capability This system produces low losses and therefore high efficiency The design also permits high surge power Six more high voltage MOSFETs are used in an Energy Recovery circuit for improved running of inductive loads such as induction motors and fluorescent lights 6 FAULT FINDING If your INVERT A POWER appears to be malfunctioning we suggest that you follow the steps below so that you can isolate the problem 1 Set switches and 2 to NORMAL as shown in fig 3 1 on page 4 2 Turn ON one of the GPOs power point which will activate the respective neon indicator when AC voltage is present see below 3 Operate appliances and observe the INVERT A POWER behaviour as summarised below SUMMARY OF INVERTER STATUS BUZZER INVERTER STATUS REMEDY NEONS if applicable GPO NEON Standby mode FLASHING GPO NEON Normal Running CONTINUOUSLY LIT BUZZER WITH Appliance load Reduce total load CONTINUOUS too large then reset with TONE Switch 1 BUZZER WITH Battery voltage Refer to Page 5 BROKEN TONE out of range for details By consulting the above table you should be able to determine whether there is a fault in your installation If you are having problems that you are unable to solve we advise you to contact your agent for help Please note that there are no user serviceable fuses within this inverter If for any
3. operating mode is described below m a 4H p ical ON OFF ON ON OFF OFF 1 NORMAL 2 DEMAND START 3 ON OFF OVERRIDE fig 3 1 fig 3 2 fig 3 3 1 NORMAL Most appliances will be sensed by this advanced Demand Start system used in this INVERT A POWER Generally appliances that consume at least 4 watts of power will start this INVERT A POWER When all of the appliances are switched off the INVERT A POWER reverts to the standby state again This is the preferred mode of operation for the inverter with a very low standby battery consumption 2 DEMAND START OVERRIDE In the rare instances where the INVERT A POWER remains in the Standby Mode even when the appliance switch is turned on you may need to override the demand start via switch 2 Other situations where this may be useful include Power tool operation For continuous operation of timing mechanisms in VCRs microwave ovens and washing machines Be aware that when operating continuously the inverter consumes approximately 1 7 Amps even with no appliances connected 3 ON OFF When switch 1 is turned OFF the INVERT A POWER is reset from shutdown modes 1 and 5 as described in the following pages Turn switch 1 back ON to restart the inverter b Battery Voltage Out of Range An internal buzzer warns you if the battery voltage is either too low or too high The sound produced is an interrupted tone that continues until the situation is corrected 1 Low Batte
4. reason you need to return your INVERT A POWER to your agent we prefer that you use the original carton and packing material Therefore do not dispose of the carton 7 SPECIFICATIONS INVERTER TYPE Crystal locked high efficiency PWM switching with Energy Recovery DEMAND START Type Pulsing Minimum Load Power to start Selectable 4W or 8W Maximum wiring capacitance 0 2uF length 2 5mm twin earth 250m Standby current from battery 60mA BATTERY VOLTAGE RANGE Minimum Cutout 10 0V Cutin 12 5V Maximum Cutout 15 5V Cutin 14 5V TOTAL APPLIANCE RATING at 25 C Continuous 1200W 30 Minute rating 1450W 5 Minute rating 2200W 1 Minute rating 3200W Surge rating 4600W ELECTRICAL ISOLATION Input to Output 2kV CRYSTAL OSCILLATOR SECTION Accuracy 0 02 COOLING FAN Cutin Temperature approx 45 C Cutout Temperature approx 35 C Note Selectronic reserves the right to change data if necessary The above specifications are based on unity power factor 8 DEMAND START SENSITIVITY SELECTION This INVERT A POWER incorporates a 2 position switch situated on the circuit board to enable two pre set levels of demand start sensitivity to be selected This switch is set to the highest sensitivity position 4 Watts of AC load at the factory Situations Requiring Reduced Demand Start Sensitivity In installations that involve an unusually large amount of AC wiring the inverter may not revert to
5. INVERT A POWER INVERT A POWER SPI 12007 12SS OWNERS MANUAL CONTENTS 1 GENERAL INTRODUCTION 2 INSTALLATION a Environmental b Electrical Wiring 3 OPERATING INSTRUCTIONS a Operating Modes b Battery Voltage Out of Range c Other Shutdown Modes 4 MAINTENANCE 5 TECHNICAL DESCRIPTION 6 FAULT FINDING 7 SPECIFICATIONS 8 DEMAND START SENSITIVITY SELECTION 9 WARNING 10 PRODUCT WARRANTY CONDITIONS Selectronic Australia Pty Ltd 25 Holloway Drive Bayswater Victoria 3153 12VDC TO 240VAC POWER INVERTER PAGES O ON O O t t BB BR r2 WV MM ND ak R O o Rev 1 1 GENERAL INTRODUCTION Congratulations on your wise choice of this 1200 Watt Selectronic Silver Series Power Inverter The INVERT A POWER range allows you to operate a variety of 240 volt AC appliances from a 12 volt battery This is achieved by electronically converting a low voltage direct current DC into a higher voltage alternating current AC Reliable short term intermittent or surge power is available from these models which is sufficient to start 4600 Watts of total appliance load Inverter operating times for various load powers are tabulated in the Specifications section of this manual on page 8 Please note that there are some appliances that are not suitable for operation from a power inverter Note also that when using compact fluorescent lamps good quality lamps should be chosen to ensure high reliability and high efficiency If
6. pplicable only from the date of original purchase All parts will be replaced or repaired free of charge within this period The unit shall be returned at no cost to the owner The provision of this warranty shall not apply if the unit has been subject to misuse neglect acts of God accidental damage or has been used for a purpose for which it is not designed Any alterations or repairs by unauthorised parties will void your warranty Freight charges to the point of purchase and the cost of any repairs resulting from damages occurring during this freighting will be borne by the owner To ensure fast efficient handling of any warranty claims please complete and return your reply paid warranty card within 30 days from date of purchase If service is required please return your inverter in its original carton with proof of purchase and a brief description of the fault to your point of service or any of the following service centres Selectronic Australia Burley TV Service Reid Technology Ltd 25 Holloway Drive 278 Edmondson Ave 3 5 Auburn Street Bayswater Austral Takapuna Victoria 3153 NSW 2171 North Shore City Australia Australia Auckland NZ PH 03 9762 4822 02 606 0279 9 489 8585 10
7. r example after approx 1 minute from 25 C at 3000 Watts the output voltage of the inverter will be reduced to allow the power switching devices MOSFETs to cool down 3 Reactive Load Over temperature If the appliance load has an excessive reactive component for example large capacitance and or inductance the INVERT A POWER will shut itself down due to high MOSFET temperatures then restart on cooling 4 Over Current Protection This protection system prevents overloads from occurring when for example motors and incandescent lamps are started If an excessively large load 1s switched on an extreme case 1s a short circuit the maximum current that 1s permitted to flow is set at 450 Amps DC 5 Short Circuit Output For safety purposes the inverter will shut down completely after approximately 10 seconds if the AC output is short circuited This will also occur if the AC voltage drops to less than 140 volts RMS The internal buzzer will emit a continuous tone under this shutdown mode This situation is covered in more detail in the Fault Finding section of this manual 4 MAINTENANCE Maintenance on the INVERT A POWER is minimal and consists of the following 1 Check for unobstructed fan operation Clear any dust foreign matter with a soft bristled brush Do not direct high pressure compressed air at the fan blades Note that the fan is designed to come on during heavy power demand Periodically check that the fan s
8. re of the following i ii iii iv v Both 240V active and neutral have complete electrical isolation from both battery connections and also from the metal case of the inverter However when wired up as an MEN system the Neutral and Earth can be connected together at the switchboard The inverter uses a pulsing demand start system see section 3 a overleaf which produces potentially dangerous voltages Disconnect the inverter before undertaking any work on the mains wiring Power factor PF correction capacitors are not required with this inverter Check fluorescent light fittings and remove capacitors where fitted If an inverter generator changeover switch is used it is vital that AC from the generator must not be allowed to be fed back into the inverter or permanent damage will result Thus a break before make type of AC switch or relay is required Occasionally it is found that in an installation the inverter will not return to the Standby mode In such cases the sensitivity of the demand start system may have to be reduced This will require access to the circuit board and the procedure for this adjustment is outlined in Section 8 of this manual is NEUTRAL EARTH Recommended 240V HARD WIRING AND EARTHING For a REMOTE AREA POWER SUPPLY SYSTEM Employing an SPI 1200i 12N S 3 OPERATING INSTRUCTIONS a Operating Modes Three modes of operation can be selected by switches 1 and 2 Each
9. ry Voltage Shutdown If the amount of energy that has been removed from your batteries causes the terminal voltage to drop below approximately 10 0 volts the internal alarm buzzer will produce an interrupted tone and the inverter will switch off Note that the battery voltage is able to drop below 10 volts briefly to facilitate the starting of motors and other appliances that have a high surge requirement The buzzer will continue to sound until either 1 The batteries are recharged to approximately 13 volts at which point the inverter will automatically restart and the alarm tone will cease or ii ON OFF switch 1 is briefly turned OFF then back ON 2 High Battery Voltage Shutdown To protect the inverter and your appliances the inverter shuts down if the battery voltage exceeds approximately 15 5 volts To restart the voltage must be reduced to approximately 14 5 volts c Other Shutdown Modes Since this inverter has been designed to operate over a wide range of power levels there are a number of inbuilt protection devices to prevent excessive internal temperatures from occurring 1 High Internal Temperature If the temperature inside the inverter exceeds approximately 45 C the fan is activated If the internal temperature continues to rise above 70 C the inverter will switch itself off until it cools sufficiently 2 High MOSFET Temperature During medium to high power operation this shutdown mode may occur Fo
10. tarts and spins smoothly 2 Check between fins of the heatsink and clean out any accumulated foreign objects for example insect nests 3 Carry out a thorough visual inspection of all wiring particularly around the battery terminals Connections should be tight with minimal corrosion Please regard your batteries with a great deal of caution and entrust any such work to your electrician Note When cleaning external surfaces use a soft lint free cloth with polish and wax e g Mr Sheen 5 TECHNICAL DESCRIPTION The following description is not comprehensive enough to be used as a service manual but is a brief introduction to the theory of operation of this particular power inverter The majority of the electronic components are located on a double sided printed circuit board measuring 274mm by 177mm which is lacquered to minimize the penetration of moisture As stated previously in this manual a power inverter of this design operates in a similar fashion to a very high powered audio amplifier Rather than amplifying audio signals this inverter amplifies two digital signals known as the gate drive voltages Following amplification the resultant switched battery voltages are combined in a highly efficient C core step up transformer which produces approximately 340 peak volts at nominal battery voltage This inverter uses 26 MOSFETs Metal Oxide Field Effect Transistors as the low voltage switching devices Each transistor consists
11. y battery cells can allow excessive voltages during charging and damage to the inverter could occur Before you connect the inverter battery leads to the battery terminals we advise you to turn OFF switch 1 as shown in fig 3 3 overleaf When connections are complete return switch 1 to its NORMAL position fig 3 1 Please observe the following points concerning the DC leads Do not extend the length of battery leads or the efficiency of the system will be compromised Wiring between inverter and battery should be direct do not fit any DC switching devices such as relays or changeover switches It is suggested that the battery leads be twisted around each other prior to connection to the batteries This action can lower the amount of radiated electrical noise which can sometimes affect AM radio reception on weak stations A good external AM aerial may also be necessary in some installations 2 240V AC Wiring WARNING The voltage from an inverter is just as lethal as land line power It is therefore absolutely necessary for your safety to ensure that all Remote Area power system installations meet and comply with the relevant provisions and requirements of AS3000 wiring standards It is imperative that you ensure also that only Registered Electrical contractors or licensed electrical mechanics are permitted to install or check any wiring in your installation When installing this inverter or tracing wiring faults be awa
12. you have any queries about suitable appliances please contact your INVERT A POWER agent for further advice Because of the high power capabilities of your INVERT A POWER we strongly suggest that you take particular note of the installation steps in this manual Please remember to complete all details on your warranty card and return it to us as soon as possible 2 INSTALLATION Installation is best approached under two headings a Environmental considerations b Electrical wiring a Environmental An INVERT A POWER has internal circuitry that is closely related to a HIFI audio amplifier However unlike most audio amplifiers inverters are often exposed to some or all of the following hazards Moisture possibly salt laden Battery acid fumes Dust Generator exhaust fumes Temperature extremes Nesting animals To help protect your investment try to minimize the above factors if at all possible Also choose a position that will allow some natural cooling for the inverter The heatsink at the rear should ideally be placed in a position where heat can easily disperse through natural convection b Electrical Wiring In general we strongly advise that all electrical installation work should be carried out by a qualified electrician 1 Low Voltage DC Wiring It is of vital importance to keep battery connectors and terminals in good condition since very large electric currents are involved Loose connections or fault
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