LD600-12 Operating Manual
Serial No _____________________________
Purchase Date ______________
Note - Your warranty can only be valid once your warranty card is completed and returned to Selectronic Australia
LD600-12 Volt Owners Manual
Warranty Card
Batteries and Connections
Getting Started Quickly
Parts Identification
STATUS Indicators
Demand Start Setting
Low Voltage Shutdown Setting
Handy Hint
Radio Frequency Interference
Fault Finding
Product Warranty Conditions
Selectronic Service Network
Back Cover
Legend for Symbols
Warnings and
electrician‟s notes
Page No.
Hints and Pointers
Thank you for choosing to purchase the Selectronic LD600-12 TRUE
SINE WAVE inverter. Many hours of Research and Development have
gone into the LD600-12 to ensure this inverter provides you with many
years of reliable service
Warranty Card
It is imperative that you complete your warranty card NOW. Your LD60012 is covered by a TWO year warranty; this warranty is in addition to your
rights under the trade practices act of your state or territory.
Returning you completed warranty card will enable us to register your
warranty and avoid any possible delays should service be required. If you
have any comments about our product that will not fit on the warranty card
please feel free to drop us a line. Yes, constructive criticism will also be
LD600-12 Inverter
Please leave a clearance of 200mm on all sides and top of the Inverter.
The LD600-12 must be installed in a dry, cool and dust-free environment.
It is recommended that the inverter be placed as far from any radio
receivers as possible.
LD600-12 Manual
Selectronic Australia
Large amounts of DC current can be drawn by your LD600-12,
care must be taken.
Fixed Installation
All fixed installation battery connections must be securely bolted,
using stainless steel nuts and bolts. To protect the connection from
corrosion smear a small amount of Vaseline or similar over the
joint. Never place batteries directly onto a concrete floor, place
timber or similar material beneath the batteries.
*System Fuse
To Load
Battery Bank
* A system fuse (of at least 63 Amps) should be placed before the battery.
An HRC motor start type is recommended. (See your system designer for
As a matter of safety, Selectronic strongly recommend that all fixed
installations be designed and installed by appropriately qualified person. The Solar
Energy Industries Association in your state or territory can provide names of accredited
system 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 to
AS3000 and/or any relevant local standards.
Electrician‟s Note
 All earth‟s AC and DC should be bonded
 RFI/Lightning Earth stake should be within 3m of the inverter
 The LD600-12 is suitable for connection to MEN wiring
 Any AC changeover switch must be a „break before make‟ type
LD600-12 Manual
Selectronic Australia
Portable Use
By using optional battery clips, the LD600-12 can be connected directly to
a vehicle battery. When using Alligator clips ensure they have a tight grip
around the battery post. Wherever possible battery connections should be
bolted. If connecting the LD600-12 through a cigarette lighter socket the
maximum power output of the LD600-12 will be severely restricted, this
practice should be avoided. Check with your supplier or installer if you are
Do not use alligator clips in a moving vehicle
Start Battery
Earth (to chassis)
LD600-12 Inverter
Auxiliary Battery
Earth (to chassis)
By incorporating an auxiliary battery in the manner above, the starting battery
should remain charged for vehicle starting (see your auto electrician).
The LD600-12 has sufficient battery cable length to allow it to sit underneath
the vehicle whilst in use. If the ground is wet, place the LD600-12 on a
waterproof liner.
LD600-12 Manual
Selectronic Australia
Batteries and Connections
Batteries are the key to maximum performance from your LD600-12, if a
battery is too small or not fully charged it may result in de-rated
performance from your LD600-12.
Battery ratings
Batteries can be rated in one of two ways:
1. CCA = Cold Cranking Ability. This is the amount of power or current
that a battery can deliver for a short period, typically a few seconds. This
how a car battery would normally be rated.
2. Ah = Ampere Hours. This is the maximum amount of energy that can be
stored in a battery; this figure will generally be stated at a particular hour
rate. This is how a deep cycle or storage battery would normally be rated.
100Ah @100hr, this means that when this battery is discharged over
a period of 100 hours, the battery has a capacity of 100Ah. This in
theory means 1 Amp for 100 hours, although this would in practice
result in a totally discharged battery that may not then recover.
To achieve maximum performance from your LD600-12 you must have a
battery capable of delivering 150 Amps for a short period whilst
maintaining at least 10.5 volts. To increase the capacity of your battery you
may need to join more than one battery together.
Where batteries are joined
in series, add the voltage of
each battery.
The capacity will equal the capacity of the smallest battery. 2 x 6
Volt 150 Ah batteries connected in series would have a total
capacity of 12 Volts – 150 Ah.
LD600-12 Manual
Selectronic Australia
Where batteries are joined
in parallel, add the capacities
together, the voltage will
remain the same as each
batteries voltage.
2 x 12 Volt 150 Ah batteries connected in parallel would have a
capacity of 12 Volts – 300 Ah.
Only use identical batteries when joining batteries together.
How long will my battery last
To work out how long your battery will last follow this basic guide.
This guide presumes commencing with a fully charged battery.
Take the total rating of the appliance being run
light globe
20 inch TV 67watts
Total load
Divide this figure (122) by 10 to know the approximate DC current draw
To convert this to Ampere hours, multiply by the number of hours used Say 1 hour
So if we have a 150Ah battery, then with the above example we should have
150 minus 12.2 = 137.8 Ah remaining in the battery.
As a general guide never discharge a battery below 50%. The deeper
a battery is discharged on a regular basis, the less life you can
expect from the battery. The Ah rating of a battery will also be
reduced if the discharge rate is significantly greater than the rated
discharge current. See your battery specifications for full details.
LD600-12 Manual
Selectronic Australia
Getting Started Quickly
If you want to get powered up quickly here are the 11 simple steps.
1. Familiarise yourself with the details in the first 6 pages on this manual.
2. Unpack the LD600-12 from the packaging.
3. Check unit for any damage that may have resulted during transport, if any
damage is evident report this to your supplier immediately.
4. Make sure the LD600-12 ON/OFF switch (12) is in the off position.
5. Connect battery positive wire (red) (10) to battery positive or battery
6. Connect battery neg. wire (black) (11) to battery negative or battery fuse.
7. Plug a 230 - 240V appliance into inverter front power point (8) but do
not switch on.
8. Turn ON/OFF switch (12) to ON.
9. After 3 seconds LED (1) will begin to flash. If no LEDs light, check for
correct connection to battery.
10. Turn power point (8) on
11. You‟re away.
LD600-12 Parts Identification
LED (1)
LED (2)
LED (3)
LED (4)
ON/OFF Switch (12)
LED (5)
Mode Button (7)
(8) Power Point/GPO
Positive (Red) Battery lead (6) can be viewed from the rear.
Negative (Black) Battery Lead (7) can be viewed from the rear.
LD600-12 Manual
Selectronic Australia
Five LEDs are provided on the front panel to indicate a number of
parameters, and allow adjustment of some of these parameters.
LED (5) tells you what LED (1) – (4) is displaying as indicated on the front
panel of the LD600-12. Pressing Mode Button (7) will change the
information being displayed.
STATUS indicators LED (5) (green) flashing
When power is first applied LED (1) should flash.
When LED (5) (green) is OFF, this indicates the LED (1) – (4) is showing
the inverters STATUS, as per written notation to the right of the LEDs. In
this mode there are no adjustments to be made.
LED (1) Flashing indicated the LD600-12 is in Demand Start mode, this
indicates that no power is being drawn from the inverter so it has gone to
SLEEP to save power.
LED (1) Stays ON, the inverter has been commanded to provide power to
the load (e.g. a light switch has been turned on) so it has gone from SLEEP
mode to ON. Once the load has been removed (e.g. the light switch is turned
off) the inverter will wait 10 seconds and return to SLEEP mode.
It is good practice to have your LD600-12 in SLEEP mode as often
as possible. When the LD600-12 is in SLEEP mode it uses 0.06
amps from the battery, when the inverter is in the ON mode it uses
at least 0.50 amps from the battery.
The amount of power required to go from SLEEP to ON is adjustable and is
described on page 9.
LD600-12 Manual
Selectronic Australia
LED (2) AC Overload should normally remain OFF. If the inverter shuts
down due to too much AC load being drawn from it then LED (2) will come
ON. The LD600-12 will remain in this condition for 1 minute after the AC
load has been decreased to a safe level. LED (2) will flash if the inverter
shuts down due to “time to shutdown”.
 If the inverter remains in this condition after one minute, switch (12)
should be turned OFF and then back ON.
LED (3) DC Volts Low / High should normally remain OFF. If the inverter
shuts down because the battery volts are too high then this LED (3) will
come ON. It will remain ON until normal battery volts are restored.
 If the inverter shuts down due to not enough battery volts, then LED (3)
will flash.
 LED (3) will continue to flash until the battery volts have risen
sufficiently. In this case, charge the battery by starting the vehicle or
using a battery charger.
The low voltage point that the inverter will cut out is adjustable to suit your
particular battery, see page 10 for details of this adjustment.
LED (4) Temperature Overload should normally remain OFF. If the inverter
shuts down due to the heatsink getting too hot, then this LED (4) will come
ON. If the transformer is too hot then LED (4) will FLASH. The LED will
remain ON or FLASHING until the temperature has lowered to a safe level;
the inverter will then come back ON.
 If this LED (4) is coming on regularly, either reduce the amount of load
on the inverter or try to move the inverter to a cooler location.
LD600-12 Manual
Selectronic Australia
Demand Start Adjust LED (5) (green) ON
It is sometimes necessary to adjust the demand start sensitivity to overcome
what is called “Phantom Loads”. A phantom load is a load that tricks the
inverter into thinking it should be ON instead of in SLEEP mode.
The wiring of a house or a portable stereo system in standby are good
examples of a phantom load. These loads serve no purpose but yet can
increase battery drain by bringing the inverter ON. Hold the Mode button (7)
down until LED (5) comes ON, (approximately 1 second) indicating you are
ready to adjust this setting. The LD600-12 will leave the factory with a
setting of 4 watts. Now press the Mode button (7) until the desired value is
sought. LEDs (1) – (4) will return to Status after 20 seconds.
Demand Start
4 Watts
5 Watts
6 Watts
7 Watts
8 Watts
9 Watts
10 Watts
11 Watts
12 Watts
13 Watts
14 Watts
15 Watts
16 Watts
Slow Flash
Medium Flash
Fast Flash
Slow Flash
Medium Flash
Fast Flash
Slow Flash
Medium Flash
Fast Flash
After “continuous”, the next button press “rolls back” the demand start
setting to 4 Watts
LD600-12 Manual
Selectronic Australia
Low Volts Adjust LED (5) (green) FLASHING
To avoid total discharging of your battery the LD600-12 shuts down at a preset low voltage. As all batteries are different, so too is the minimum voltage
they should be discharged to. The LD600-12 will leave the factory with a
setting of 11.0 volts, change this setting if required.
Hold the Mode button (7) down until LED (5) is FLASHING,
(approximately 2 seconds) indicating you are ready to adjust this setting.
Now press the Mode button (7) until the desired value is sought. LEDs (1) –
(4) will return to Status after 20 seconds.
Low Volts
10.0 Volts
10.1 Volts
10.2 Volts
10.3 Volts
10.4 Volts
10.5 Volts
10.6 Volts
10.7 Volts
10.8 Volts
10.9 Volts
11.0 Volts
11.1 Volts
11.2 Volts
11.3 Volts
11.4 Volts
11.5 Volts
Slow Flash
Medium Flash
Fast Flash
Fastest Flash
Slow Flash
Medium Flash
Fast Flash
Fastest Flash
Slow Flash
Medium Flash
Fast Flash
Fastest Flash
After “11.5 Volts”, the next button press “rolls back” the Low DC Volts
Cut-out setting to “10.0 Volts”
LD600-12 Manual
Selectronic Australia
Periodic maintenance of your LD600-12 inverter involves little more than
checking for any obstructions to the black cooling heatsink at the rear of the
inverter. The heatsink must be cleared of any accumulated foreign matter that
may have lodged itself between the fins since the last maintenance check, e.g.
insect nests. Also verify that airflow around the inverter has not become
1. Every week, carry out a thorough visual inspection of all battery
wiring, taking particular note of the condition of inter-connections
between cells. This maintenance should be carried out in conjunction
with the battery manufacturers recommended maintenance.
Safety Hint
When working on batteries of such high capacity it is
essential that you wear protective clothing, some form of eye
protection and rubber-soled work boots. Please regard your
batteries with a great deal of caution, and if in any doubt,
entrust this work to your supplier / installer.
Check that the stainless steel inter-connecting bolts are tight and have
no corrosion. If corrosion is evident, carefully follow the following
Disconnect the system battery fuse before working on the battery
Unbolt the stainless steel bolts and nuts of any corroded
connections and thoroughly clean the joint with a wire brush or
file, taking extreme care not to short circuit any battery cells with
any tools.
Re-assemble and smear a small amount of Vaseline or similar
grease over the surface of the joint to slow down any future
LD600-12 Manual
Selectronic Australia
Once a fortnight or as directed in your battery manufacturer, check the
specific gravity (SG) of each battery cell using a hydrometer, to ensure
that all cells are performing correctly and are properly charged. Any
serious imbalance should be reported to your system designer in case
remedial action needs to be taken.
Handy Hints
It is very important that you become familiar with the
functioning of your inverter. From a distance, it is not always
easy to know what if the inverter is On or in Sleep mode. An
easy way to determine this is to plug a small child's night-light
(neon type) into a power point that is easily visible, or replace
this power point with a safety type with a neon indicator. This
will indicate the inverter's operation by flashing when the
inverter is in SLEEP mode and remaining ON when the
inverter is brought ON by a load.
LD600-12 Manual
Selectronic Australia
Radio Frequency Interference
Radio Frequency Interference (RFI) can be a problem for owners of inverters.
RFI in a domestic situation may produce noise or interference on a radio or
TV receiver.
Considerable development time has resulted in a reduction of the RFI
generated by the inverter to a level that complies with C-tick requirements.
Compliance to this standard means RFI is low, but how well the inverter
performs in a particular installation can vary. Below are some suggestions to
help reduce the effects of RFI in your installation;
It is recommended that the power system including the inverter be
housed at least 15 metres from the home.
Ensure an earth stake is placed as close to the inverter as possible and
connected to the inverter via a short length of wire. See page 2 for
wiring details.
Avoid running DC cables into the home, if at all possible. If this
cannot be avoided, run DC and AC in separate conduits separated by
as much distance as practicable. All DC wiring should also be kept
together and be as short as possible.
If your inverter is to be installed in a mobile home or similar, try to
keep your inverter at least one metre away from your radio or audio
equipment. The further the better.
LD600-12 Manual
Selectronic Australia
Fault Finding
No indicators ON when power is first applied
When first connected, if the LD600-12 shows no indicators the battery
connections may be reversed. Check that the red battery wire (10) is
connected to the battery positive, and the black battery wire (11) is connected
to the battery negative. Remember there is a 3 second delay before power is
available after switch ON.
Inverter stays ON when no appliance is being used
This can be a common problem known as a “Phantom Load”, but can be
easily overcome. Some appliances will need to be switched off at the power
point as they may still represent a small load despite being switched off at the
Check again to make sure that there are no appliances left ON, the
sequentially switch off appliances at the wall and by watching your night
light (as described in Handy Hint, check to see if the LD600-12 returns to
pulsing (SLEEP) mode after a 10 second delay. Once you have found the
offending appliance, increase the sensitivity of the “Demand Start” (see page
11) until the inverter turns OFF. Once this is done re check that small loads
will still bring the inverter ON when required.
Inverter shuts down during the middle of the day, and comes
back ON late in the afternoon
This is more than likely caused by high battery volts during peak charging
times from Solar Panels. Battery volts should never exceed 17 volts. If this is
the case, have your Solar Regulator checked.
LD600-12 Manual
Selectronic Australia
Product Warranty and Conditions
These warranty conditions apply to the LD range of Inverters for sales within Australia
and New Zealand.
This product is warranted by the manufacturer for a period of 24 months from date of
purchase to the original purchaser only.
The manufacturer will bear the cost of parts and labour to repair any faults found within
the terms and period of this warranty.
Faulty product or parts must be returned to Melbourne Australia at the owner‟s expense
for claim under warranty.No allowance is made for the cost of labour or traveling time
required to disconnect or reinstall faulty parts.
Cost of freight to return parts to the customer will be paid by the manufacturer, method of
freight used will be determined by the manufacturer.
Under certain circumstances the manufacturer may allow on site repairs to be carried out.
This will be at the manufacturers discretion and the manufacturer is not responsible for the
cost of any labour or traveling time incurred.
Unless otherwise specified to the purchaser the benefits conferred by this voluntary
warranty are additional to all other conditions, warranties, guarantees, rights and remedies
expressed or implied by the Trade Practices Act in your state or territory.
All installation and user conditions as set down in the instruction manual must be strictly
adhered to, failure to do so may void your warranty.
This product is not to be used for Life Support equipment.
Any faults caused by lightning, water or moisture ingress, faulty installation, using the
product in a manner which it is not intended, vermin infestation, improper voltage,
alterations to the product which affect its reliability or performance, or faulty generator
sets will not be covered under warranty.
The manufacturer shall bear no responsibility for any consequential loss, damage or
expense due to any malfunction of the product or the time it is out of service
The manufacturer will not be held responsible for any misleading or incorrect information
conveyed by any salesperson or installer not directly employed by the manufacturer.
If service is required please contact your installer or retailer before taking any further
LD600-12 Manual
Selectronic Australia
LD600-12 Specifications
Inverter Type Microprocessor control circuit with PWM full bridge power
stage. True sine wave AC output
Current draw from Battery
Demand Start SLEEP mode (average)
Inverter ON, with no Load
Maximum Continuous Load (600 Watt)
Half hour rating (800 Watt)
Surge rating (1500 Watt)
0.06 Amps
0.54 Amps
 80Amps
147 Amps
Inverter Power Ratings @ 25º C
Total Inverter output
Half hour rating
Surge rating (5 seconds)
Wattage @ 1.0pf
600 Watt
800 Watt
1500 Watt
2.4 Amps
5.4 Amps
Demand Start
Minimum Load to Start
Response Time
Pulsing AC
4 watts – 16 watts user adjustable
1 second maximum
Battery Voltage Range
Low DC Volts Cut Out–10 second delay
Low DC Volts Cut In
High DC Volts Cut Out–Instantaneous
10 – 11.5 volts user adjustable
12 volt
17 volts
LD600-12 Manual
Selectronic Australia
Miscellaneous Specifications
Reverse Polarity Protection
Output Voltage Accuracy 0-350 watts
Output Frequency
Peak Efficiency
Total Harmonic Distortion
Memory Retention
Operating Temperature Range
Transformer Type
Cooling Method
Power Point
Chassis Material
Chassis Coating
LD600-12 Manual
Full Electronic Protection
± 4% @ 12 volt input
50Hz ± 0.01%
0º C to 40º C
Controlled fan-forced
2 x10 Amp Single Pole
Zinc Coated Steel
Powder Coated
210W x 170H x 3100mm D
Selectronic Australia
Selectronic Authorised Service Network
Selectronic Australia
Suite 5, 20 Fletcher Road
Ph: +61 3 9727 6600
Fax: +61 3 9727 6601
Burley TV Service
278 Edmondson Ave.
Ph: 02 9606-0279
Rainbow Power Company
1 Alternative Way
NSW 2480
Ph: 02 6689 1430
Fax: 02 6689 1109
Solar Inverter Services
13 Thirteenth Ave.
Ph: 02 66581733
Reid Technology
Unit D, 15-17 Saturn Place
North Harbour
Auckland 1330
New Zealand
Ph: 9 489-8100
Fax: 9 489-8585
Suite 5, 20 Fletcher Road Mooroolbark Victoria 3138 Australia
Phone +61 3 9727 6600 Fax +61 3 9727 6601
Web www.selectronic.com.au Email sales@selectronic.com.au
CS0135 Rev 04 Part No. 003620