Leesky LY-2000KDR Power Inverter User Manual

DC TO AC
POWER I NVERTER
USER’S MANUAL
Model: LY-2000KDR 
LY-3000KDR

Warning: This manual contains important safety and operating instruction. Please read it carefully before use the unit.

Specifications

till the temperature of inverter case reach 40℃ or power >40% rated power.
Working temperature| 0 ~ 40℃
Storage temperature| -10 ~ 45℃
Fuse| 35A×6| 35A×3| 30A×10| 30A×5
Weight| 4.1Kg| 4.1Kg| 5Kg| 5Kg
Size (L×W×H)| 410×238×96mm| 485×238×96mm

Note: Due to the continuous improvement of products, the technical parameters in this manual are subject to change without prior notice.

BRIEF

Our power inverter is an advanced tool of power conversion, and it can supply you with AC power converted from DC power source. Not only can be used in cars, vessels and camping, but also can be used in emergency the power fails.
In order to use the inverter efficiently and safely, please install and use it in a proper way. Please read the instruction carefully before installing and using the appliance.

WARNING AND SAFETY

1. Read the manual before connecting this inverter and keep it for future reference.
2. While opening the product package, please check the integrity of the product and accessories. If there is any problem, please do not use it.
3. While connecting and using for the first time, if there is smoke or explosion sound in the product, please stop using immediately and disconnect the product from the battery and electrical appliances. This may be caused by damage during the  transportation or due to moisture during storage in the warehouse before delivery.  Please contact your seller in time.
4.  During daily use, if there is smoke or explosion sound in the product, please don’t worry, this is due to the internal fuse protection of the product. Please do not disassemble it by yourself. Please stop using the product immediately. Disconnect the product from the battery and electrical appliances. Contact the seller in time and only with seller’s agreement a hired professional personnel can disassemble the product. Otherwise, it may cause electric shock, fire and serious personal injury.
5. Do not put the inverter under direct sun light or near a heating source.
6. The case of inverter will get hot during using. Do not allow flammable materials such as clothing, sleeping bags, carpet or any other flammable materials to touch the inverter. The heat from the inverter can damage these items.
7. The power inverter is designed to be used with a negative ground electrical system! Don’t use with positive ground electrical systems (the majority of modern automobiles, RVs, trucks and boats are negative ground).
8.  Do not disassemble the unit randomly: it may cause fire or electric shock.
9. Do not connect the negative to car chassis when use in car.
10. This device should only be serviced by a qualified technician. This item does not have any serviceable parts.
11.  Prevent body contact with grounded surfaces such as pipes, radiators, ranges, and refrigerator enclosures during installation.
12. Do not operate the inverter if under the influence of alcohol or drugs. Read warning labels on prescriptions to determine if your judgement or reflexes are impaired while taking drugs. If there is any doubt, do not operate the inverter.
13. People with pacemakers should consult their physician(s) before using this product. Electromagnetic fields in close proximity to a pacemaker could cause interference to or failure of the pacemaker.
14. Keep the inverter well-ventilated. Do not place any objects on top of or next to the inverter or allow anything to cover the cooling fans;inverter will bel overheating, causing a potential fire hazard and/or damage to the inverter. Leave adequate ventilation  space underneath the inverter as well; thick carpets or rugs can obstruct air flow, causing the inverter to overheat.
15. Avoid unintentional starting. Be sure the switch is in the OFF position when not in use and before plugging in any appliance. Disconnect the battery and inverter when not in use for a long time.
16. Keep inverter away from children. Don’t install the inverter where it is accessible to children.
17.  The power inverter will output the same AC power as utility power, please treat the AC outlets as carefully as you would your home AC outlets. Do not put anything other than an electrical appliance into the output terminal. It may cause shock or fire.
18. This product cannot be used for medical and life support equipment.

PARTS LIST

1. Back panel)
2. Front panel)
3. Remote controller box)

ASSEMBE

1. The position of Mounting First ensure that there is enough space to install the inverter, while the installation location must meet the following requirements:
   (1) Drying: Do not use water or other liquids dripping on the inverter
   (2) Cool: a working environment temperature of the product is 0-40℃, preferably a temperature of 10-25℃, at a temperature as low as possible within this range
   (3) Ventilation: There should be a certain distance between inverter and other objects, to avoid blocking the products vents.
   (4) Clean: Do install the products in the dusty, wood chips or other particles , If cooling fan is turned on, the particles involved in the inside of the product, thus affecting the normal work.
   (5) While inverters and batteries connected, will produce arcs or sparks, so there should not be around flammable objects such as gasoline, alcohol, etc.

2. Assemble the inverter
   For this big power inverter, because of the heavier weight, preferably mounted on a solid platform, such as floor, table or mounting bracket fine. In order to avoid falling off, platform for supporting the product should can bear the weight of sufficient capacity, and it is good with four screws to secure the product.
   NOTE: In case not connected to the remote box, the product can also be used as normal modified sine wave inverter as normal.

3. Assemble the remote control box 1) The remote is designed to be mounted on a dash or other surface where a hole should be cut so that it sits flush. T his is not a requirement however just a recommendation.

2. The remote cable should be plugged into inverter and the remote before mounted.

USING TIME OF BATTERY

1. Current and voltage
   The battery is used to supply the DC input voltage required by the product, and its rated voltage must be in line with the rated input voltage of the inverter, beyond the input voltage range of the inverter, and the cross connection will cause the product  to be under voltage or under voltage protection.
   At the same time, the battery must provide enough current for inverter, a small capacity battery is not able to drive high power appliances, in this case, usually due to excessive current and battery discharge the battery terminal voltage low, undervoltage protection products appear.
   The simple formula for the battery current is the load power / the battery voltage.
   As the inverter itself will be part of the loss, so the actual current will be greater than this value of about 10%. For example: the battery voltage is 12VDC, the load power is 400W, then the actual current size of the battery is about 400W÷12Vx110%=37A

2. Battery working time
   The using time of battery depends on battery capacity (AH) and the power of the connected load (W), the calculating method is: Time (hours) =battery capacity (AH) × battery output voltage (V) x efficiency rate ÷ electrical power of using (W) such as the
   12V DC input inverter uses the 12V battery, if the battery capacity is 200AH and at this time the inverter is driving 400W power load, the efficiency rate is 90% when the battery is full, according to the formula above, the battery use time =200(AH)÷(400÷12×110%) = 5.4 (Hour). This means the battery can be used for 5.4 hours.

3. Sizing the battery bank

Inverter Version| Inverter Rating power| Max Current (A)| Battery for lasting 1 hour| Battery for lasting 2 hours| Batteries for N hours
---|---|---|---|---|---
12V| 600W| 57| 70| 140| Nx70AH
1000W| 95| 115| 230| Nx115AH
1200W| 114| 140| 280| Nx140AH
1500W/1600W| 152| 180| 360| Nx180AH
2000W/2200W| 209| 250| 500| Nx250AH
2500W| 238| 290| 580| Nx290AH
3000W| 285| 340| 680| Nx340AH
4000W| 380| 460| 920| Nx460AH
5000W| 475| 570| 1140| Nx570AH
24V| 600W| 29| 35| 70| Nx35AH
1000W| 48| 60| 120| Nx60AH
1200W| 57| 70| 140| Nx70AH
1500W/1600W| 76| 90| 180| Nx90AH
2000W/2200W| 105| 130| 260| Nx130AH
2500W| 119| 140| 280| Nx140AH
3000W| 143| 170| 340| Nx170AH
4000W| 190| 230| 460| Nx230AH
5000W| 238| 285| 570| Nx285AH

NOTE:

1. The battery specifications provided in the above table are for reference only. The selection and use of the battery should also refer to the battery instructions, especially for Lithium battery and LifePO4 batteries, such as: whether the maximum discharge current of the battery meets the working current of the product; Whether the low-voltage protection of the battery is within the working range of the product, etc. Furthermore, whether the battery is fully charged or false capacity labeled which will lead to insufficient working hours of the product. According to the life span of the battery, the battery capacity will decline after long term of use, which will also affect the working hours of the product.
2. Recommends using “Deep Cycle” or Marine rated batteries.

WARNING:

1. Do not connect different brand or different capacity, specification of batteries in series or parallel, it is unsafe and may damage the batteries or inverter.

2.  Inverters are not recommended to be used when the battery is being charged , including solar charging; When the inverter is used under the condition of charging battery, the voltage fluctuation at both ends of the battery is relatively large, and the ripple voltage and current will cause the following adverse factors:
   The battery cannot be fully charged when the inverter is working, and the charging voltage ripple will affect battery life.
   While charging battery, the ripple voltage and current are large, and the input voltage and current are unstable, which will affect the working efficiency of the inverter and easily damage the product. The charging device that charges the battery may cause high charging voltage, which will trigger the inverter input High Voltage protection fault and affect the work of the product. If it happens, the charging device must be disconnected.

3. Generally, do not connect batteries in parallel more than FOUR pieces.

CONNECTION

1. Grounding
   The power inverter has a terminal on the back panel marked “Grounding” or ” “.
   This is used to connect the chassis of the power inverter to the ground.
   The ground terminal has already connected to the ground wire of AC output receptacle through the internal connecting wire. The ground terminal must be connected to the ground wire, which will vary depending on where the power inverter is installed.1. In some fixed available position| Connect the ground terminal to the earth
   ---|---
   2. Indoor conditions| A. Connect to household metal water pipes, metal frames (door frames, window frames) connected to the earth
   B. Connect to the nails on the wall or ground which contact to the earth
   C. Connect to the grounding system of the mains grid which is connected to the ground wire of the socket (Note: this connection must be operated by a professional electrician)
   3. Outdoor conditions| Connect one end of earth wire to the inverter grounding terminal, the other end to the nail and insert to the earth.
   4. In a Vehicle, boat or ship| Connect to the chassis of vehicle or grounding system of boat, ship.

Warnings:
● Make sure the firmness of the connection. The ground wire must be 14AWG (2.08mm ) or even larger.
● Do not operate the power inverter without connecting to ground. Electric shock 2 hazard may result.

2. Connect to the battery
   ① Please do all the safety precautions before connection, then check whether the battery voltage is in accordance with the input voltage of the inverter. Only the 12 voltage of battery allowed to connect with the 12V inverter; 24V battery allowed to connect 24V inverter.
   (1) Secure the provided Negative (black) DC cable connect to the Negative (-) bolt on the inverter, and the other end to the Negative (-) post on the battery.
   (2) Secure the provided Positive (Red) DC cable to the Positive (+) bolt on the inverter, and the other end to the Positive (+) post on the battery.
   (3) The nuts of the connection posts must be tightened to ensure well connected.
   (4) Press the power switch for one second, because it is a long press type switch.
   ② The connecting wire must be big enough to bear current, or else the inverter can not support big load because of voltage reduce caused by the small cross- sectional wire. Refer to the below table, to select the input DC wire or larger one.

Inverter Input voltage| Rated power| Max current of cable| Specification of wire length≤1m| Specification of wire length1-2m| Specification of wire length≤N m
---|---|---|---|---|---
12V| 1000W| 100A| 6AWG (13.3mm2)| 3AWG (26.67mm2)| N×6AWG (N×13.3mm2)
1500W| 150A| 4AWG (21.15mm2)| 1AWG (42.41mm2)| N×4AWG (N×21.15mm2)
2000W| 200A| 3AWG (26.67mm2)| 0AWG (53.49mm2)| N×3AWG (N×26.67mm2)
2500W| 250A| 2AWG (33.62mm2)| 00AWG (67.43mm2)| N×2AWG (N×33.62mm2)
3000W| 300A| 1AWG (42.41mm2)| 000AWG (85.01mm2)| N×1AWG (N×42.41mm2)
24V| 1000W| 50A| 9AWG (6.63mm2)| 6AWG (13.3mm2)| N×9AWG (N×6.63mm2)
1500W| 75A| 7AWG (10.55mm2)| 4AWG (21.15mm2)| N×7AWG (N×10.55mm2)
2000W| 100A| 6AWG (13.3mm2)| 3AWG (26.67mm2)| N×6AWG (N×13.3mm2)
2500W| 125A| 5AWG (16.77mm2)| 2AWG (33.62mm2)| N×5AWG (N×16.77mm2)
3000W| 150A| 4AWG (21.15mm2)| 1AWG (42.41mm2)| N×4AWG (N×21.15mm2)

NOTICE:

1. The table above is only for your reference. In practice, the thick wire can be replaced by two thin parallel wires if only the total cross-sectional area of the wire meets the requirements.
2. In high current, the input DC wire may produce voltage drop, therefore, the operating voltage should be subject to the value on the terminals. If the voltage drop is too large, you can increase the cross-sectional area or reduce the length of the lead.
3. Connect cathode wire of the battery to the cathode terminal (black) on the rear panel of inverter and then connect the anode wire of the battery to the anode terminal (red) on the inverter, and fix them.

WARNINGS:

1. Please wear eye patch and work clothes when working around the battery to avoid the acid and corrosive objects harm your eyes and skin.
2. Prepare enough water and soap. In case the acid materials contact eyes or skin, clean it by soap and water as soon as possible. If the acid materials spay to your eyes accidentally, clean it by cold water immediately and then sent to hospital.
3. Do not put any combustible material in the location of installation for spark will result when it is connected to the battery.
4. Keep good ventilation. The battery may produce a little inflammable gas when it works, so keep away from the inverter and it is better to install them in different space.
5. Fix the connecting wire of the input DC, or it will result the over-reduction of the voltage or over-temperature of the wire.
6. Reverse connection of the polarities or the short circuit will burn the fuse or result the permanence damage of the internal elements of inverter.
7. Take away the metal accouterment, such as ring or watch, when installation to avoid the short circuit.
8. Although there is over-voltage protection, it may also cause damage of the inverter if the input voltage is too high.

Connection of the AC appliance
Put the power plug of the AC appliance load into the output AC receptacle of the inverter directly.
WARNINGS:

1. Make sure that the switches of appliances are in OFF position before connection.
2. Check the power cord. If it is damaged, it should be connected after replacement.

Connection of there mote control box
Directly to the two ends of the cable respectively inserted into the inverter and wired remote control remote control box on the interface.
Hard wire block terminals
The hard wire block terminals are specially designed for heavy duty loads over 1500Watts. Please refer to the bellow table to choose suitable wires:

I i| Max power of load| Output Voltage| Max current| Wire for 1 meter| Wire for 2 meter| Wire for N meter
---|---|---|---|---|---|---
12V| 2200W| 120V| 18A| 13AWG 2.6mm2| 10AWG 5.26mm2| N×2.6mm2
2500W| 21A| 12AWG 3.3mm2| 9AWG 6.63mm2| N×3.3mm2
3000W| 25A| 11AWG 4.2mm2| 8AWG 8.37mm2| N×4.2mm2
4000W| 33A| 10AWG 5.26mm 2| 7AWG 10.55mm2| N×5.26mm2
5000W| 42A| 9AWG 6.63mm2| 6AWG 13.30mm2| N×6.63mm2

Batteries connection

Batteries can be a single battery or muliiple batteries in parallel. Batteries connected in parallel boost amp hours while maintining voltage. Tapping each battery as shown balances the load of the battery.
Parallel battries illurtrated:

Parallel battries (12V) for a 12V bank (Increases the Amp/Hr capacity)

USAGE OF INVERTER

1. How to use a inverter
   (1) Check the output voltage and capacity of the battery to make sure it applicable to the requirement of the product use.
   (2) Connect the battery and the DC cable of the inverter to ensure that the polarities do not be reversed and in good contact.
   (3) Long press the switch of inverter or of remoter for over 0.5s and later on let it go, if the indicator lighter on the inverter or on the remoter box is on,it means that the inverter start to work normally. This method can avoid effectively turning on the unit due to the interference or any mistakes.
   (4) Switch off electrical appliances and put electrical appliance plug to the AC output socket of inverter. And then switch on electrical appliance for using.。
   (5) The cooling fans inside the inverter do not work when the unit power on. It doesn’t run until the case temperature rise up to 40℃.
   (6) Switch off inverter and remoter to stop working. At that time, the indicator lights in both inverter and remoter are off. The inverter does not consume current from battery when it switched off

2. How to use USB outlet

The USB outlet can provide stable 5V DC voltage; the maximum current is 2400mA, which can directly provide power for the portable device with USB port.
Notice: Before use the USB power supply, please make sure the device can be charged by USB and the maximum working current is no more than 2400mA .

OPERATIONAL PRINCIPLE

The inverter converts DC to AC, conversion process is divided into two steps, the first step is to convert low voltage DC to high voltage DC , the second step is using the full bridge converter tech to convert high voltage direct current into alternating current.
The conversion circuit adopts advanced power device and high frequency power conversion technology. Compared with the traditional inverter using the power frequency transformer, it has the characteristics of small size, light weight and high conversion efficiency etc.

OUTPUT VOLTAGE AND WAVE FORM

The output voltage waveform of the inverter is called “quasi sine wave” or “modified sine wave”, it is a step waveform similar like household alternating current , this type of waveform is applicable to most of the load, including linear or switching power supply, transformer, electric motor etc.
Since the output voltage waveform of the inverter is different from AC, RMS with general analog or digital multimeter can not accurately measure the output of the inverter, please use the true RMS digital multimeter to measure, such as FLUKE 177/179 multimeter.

ABOUT SOFT START TECHNOLOGY

This inverter has advanced soft start function. The output voltage rises up from low to normal when the inverter is turned on.
This can reduce high startup currents, which can make startup easier for large inductive loads.

WORKING INDICATION

When the product is working, the digital tube will alternately display the input voltage and the output power. When the product enters the protection state, the digital tube the current state of protection, as shown below:

1. Input(V) LED is on, digital display is the value of the input voltage
2. Output(KW) LED is on, digital display is the value of the output power
3. Output(W) LED is on, digital display is the value of output power
4. Digital tube shows LO, indicates the current status of undervoltage protection
5. Digital tube shows HI, indicates the current status of overvoltage protection
6. Digital tube shows OL, indicates the current status of output overload or short-circuit protection
7. Digital tube shows OH, indicates the current status of overheat protection.

PROTECTION FEATURES

1. Input under-voltage alarm: When the input DC voltage is lower than 9.8V (19.6V/39.2V), the buzzer will whistle intermittently to remind that the inverter will go into the under voltage protection. Pay attention to save the data if you are using computer.
2. Under voltage protection: The inverter will automatically shut down when the input DC voltage is lower than 9.5V(19V/38V).The buzzer will whistle continuously and the green light is off, red light is on. Please turn off the inverter and use it after recharging the battery.
3. Over voltage protection: The inverter will automatically shut down when the input DC voltage is higher than 16V(32V/62V).The buzzer will whistle continuously and the green light is off, red light is on. Please turn off the inverter and adjust the input voltage to the admissible range.
4. Overload protection: The inverter will automatically shut down when the load is higher than the rated power. The buzzer will whistle continuously. Turn off the inverter and resume to normal operation after taking away the excessive load.
5. Short-circuit protection: The AC output will be automatically shut down when short circuited. It will automatically reset after the problem is solved.
6. Thermal protection: The unit will get bot during operation. If the temperature is higher than 149°F, the inverter will automatically shut down. Then the buzzer will whistle continuously and the green light is off, red light is on. Please turn off the inverter, and continue using it after the temperature goes back to normal naturally. Meanwhile find out the factors causing the fault, such as ventilation, ambient temperature, vent, load power and so on. It can avoid similar things from happening again.

HOW TO CHANGE FUSE

1. Firstly disconnect the inverter and external batteries, solar panels, load etc all the connections.
2. Unscrew the side plate screws and pull out the bottom plate.
3. Use pliers to clamp car fuse inside the product, and pull out .
4. Replace the same specifications of the car fuse, and then install the bottom and side panels, and screw well.

TROUBLESHOOTING TIPS

No output voltage and buzzer sounds continuous or intermittent and shutdown?| Input Battery voltage is below 9.8V+/-0.5V(12V version); 19.6V+/-0.5V(24V version)| ●  Recharge the battery
●  Battery may be too small. Please refer to instruction for recommended battery sizes.
●  Check the cable connections and ensure the cable sizes are sufficient. Use provided cables if included. The shorter and thicker cables the better.
●  One or some of the batteries in the battery group may be defective, remove the defective battery
●  The inline fuse (if has) may be too small.
High input DC voltage. The input battery voltage is above 16V(12V version) or 32V (24V version)| ●  Check the battery charger is not connected to the battery.
●  Do not use it when the battery is charging Disconnect the solar panel while the battery is fully charged.
●   Confirm whether the input battery is correct.
Overload| Reduce the load power or choose a bigger inverter.
Over temperature| ●  Turn off the load and let it cool naturally for 10 to 30 minutes. Restart it after it resumes to normal temperature. Reduce the load .
●  Avoid blocking the vent and improve the ventilation condition.
No AC output voltage?| 1. The power switch is off.
2. Poor contact with battery .
3. Inline fuse(if has) may be burnt.| ●   Press the power switch for 1-2 second to turn it on, it is a long press type switch.
●  Check the cables and make sure they are tightly connected .
●   Check the inline fuse is fine or remove circuit breaker to test the inverter again.
●   One or some of the batteries in the battery group may be defective, remove the defective battery.
Output voltage below 100Vac (110-120V inverter) or 200 Vac (220-240V inverter)?| A True RMS multi meter is required to properly measure output voltage of modified wave inverter| ●  Test output voltage with a True RMS meter
●  Try to maintain the input voltage in the range of rated power.
●   Change the battery of the meter then test again .
Cannot drive the load even less power than the size of inverter?| 1. Power of load is too large, or the actual power of the appliance exceeds the max power of inverter.
2. The starting power is larger than rated power (especially for appliances with motor, this kind of inductive loads require a large rush of power to start. Even a 80W fridge may need a 1000 watt inverter) .
3. Battery is too small.| ●   Reduce the load power, or turn on the appliance first, then turn on the inverter.
●   Choose a bigger inverter.
●  Change a bigger battery and ensure fully charged.
●  The inline fuse(if has) may be small.
●   Choose the shorter and thicker cables.
Tester indicated “Open Ground”| This is because it is not connected to a “true Earth ground”, meaning it is not connected to a metal rod stuck in the Earth. It would be impossible to do so in a boat or car while moving . The power inverter DOES NOT and cannot create a true Earth ground on its own .| ● Don’t need the tester to do the Grounding Test.
●   Refer to the manual to do the Grounding
●   Choose an inverter with GFCI sockets
Starting alarm ?| The main reason is that the instantaneous current is too large, which leads to the detection of low voltage and triggles under- voltage alarm| ●   Please restart the inverter several times.
Got 40V or so while testing inverter’s ground wire and zero line ?| This voltage has no meaning, zero line can be ground .| ●  This is normal , there is no current leakage.
Cooling Fan noisy| Object may be stuck in fan| Inspect fan area at rear of unit to ensure no object is obstructing fan movement

WARNING: REVERSE CONNECTED THE CABLES WILL DAMAGE THE INVERTER AND AVOID YOUR WARRANTY!
If the unit still doesn’t work normally after using all the methods above, it maybe the internal faults of the circuit. Please contact seller for warranty.

WARRANTY

This product is designed using the most modern digital technology and under very strict quality control and testing guidelines. If however, you feel this product is not performing as it should, please contact us: [email protected]
We will do our best to resolve your concerns. If the product needs repair or replacement, make sure to keep your receipt/invoice, as that will need to be sent back along with the package and prepaid to LEESKY.
Except as noted above, LEESKY makes no warranty of any kind, express or implied, including without
limitation the implied warranties of merchantability and fitness for a particular purpose. In no event shall
LEESKY be liable for indirect, special or consequential damages. This warranty only applies to LEESKY branded products. All other name brand products are warranted by and according to their respective manufacturer. Please do not attempt to return non-LEESKY branded products to us.
The following situations will void warranty:

1. The box is distorted, damaged or changed, and interior parts damaged because of an exterior hit or drop not reported at time of delivery.
2. Connect the DC power incorrectly reversing the polarity.
3. Dismantled or repaired the unit by an unauthorized person.
4. The unit was damaged by incorrect installation or operating method.

To find out where to buy any of our products, you may also e-mail: [email protected]
Welcome to use LEESKY power inverter. If you have any query during using our inverter, please contact our service team by email: [email protected]

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