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Home > Products > (out of production)Inverter SP Series 350W-20000W > 3500W pure sine wave inverter-.....


3500W pure sine wave inverter-I-Panda SP inverter series3500W pure sine wave inverter-I-Panda SP inverter series3500W pure sine wave inverter-I-Panda SP inverter series3500W pure sine wave inverter-I-Panda SP inverter series

3500W pure sine wave inverter-I-Panda SP inverter series

  • Introduction
  • When under inversion mode,this series of inverters can be set to normal working mode and sleep mode. And when under utility mode,it has Auto Voltage Regulation (AVR) function, utility charging function (only when AC first) and UPS function (AC first or DC first,optional). This multifunction low frequency pure sine wave inverter, which has the advantages of stable quality, strong load-carrying ability and anti-poor environment ability, Long service life, is the second generation of our low frequency pure sine wave  inverter.


1. Back-up UPS system for industrial, commercial, household,etc 

2. Mobile power and standby power for areas that are lack of utility. 

3. Off-grid solar & wind power system 

3.1 Simple Off-grid solar & wind power system 

3.2 AC first Off-grid solar & wind power system 

3.3 DC first Off-grid solar & wind power system 


1. pure sine wave output, full power 

2. CPU management and control,modular design 

3. LCD display,can visually display various parameters 

4. Multifunction design,can set a variety of working mode 

5. External battery connection, convenient to expand use time and back-uppower time; user can connect as many batteries as needed 

6. With super load carrying ability and high load capacity, this seriesof  inverters can not only drive resistance load; but also various kindsof inductive loads, such as motor, air conditioner, electricdrills, fluorescent lamp, gas lamp, etc. It can drive almost anykinds of load 

7. Low frequency circuit design, good system stability, low failurerate and long service life (under proper operation, it may be as long as 5years) 

8. Perfect protection: low voltage protection, over voltage protection, overheatprotection, short-circuit protection, overloads protection; alarmalert 

9. CE / EMC / LVD/ RoHS Approvals. 

10. Two years warranty, life-long technical supports 


1.  Sole inversion function under inversion mode (only connected to battery),can be set to normal operatingmode and sleep mode.

1.1 Normal working mode:FREQUNCY in the LCD display is setas 01. No matter whether there are AC loads connected to the inverter or not, theinverter’s output terminal will always have voltage ready to supply power tothe loads. Under this mode, the LCD will be displayed as bellow: 

1.2 Sleep mode:FREQUNCY in the LCD display is setas 02. If the power of the loads that connected to the inverter is lower than5% of the inverter’s rated power, there will be no output from theinverter. That is to say, only the chip of inverter is working under suchcondition and the power consumption is only 1-6W; If the power of the loadsthat connected to the inverter is higher than 5% of the inverter’s rated power, thenthe inverter will automatically start the inversion function and supply powerto the loads within 5s. As shown below:

2.  UPS function under utilitymode(connected to battery and utility .Can be set as utility first, batterystandby mode and battery first, utility standby mode).

2.1 Utility first, battery standby UPSmode: FREQUENCY in the LCD display is set as 01. When both utility and batteryare connected to the inverter, utility will supply power to the loadsprior to the battery. When utility is cut off, the battery will automaticallycontinue to supply power after inversion. 

Steps are as follows: 

Step 1: When utility power is available, it will output directly aftervoltagebeing stabilized and charge batteries at the same time. 

Step 2: When utility power is cut off suddenly, the inverter will convertDC power to AC power automatically to ensure uninterrupted power supply within5ms. 

Step 3: When utility power becomes available again, it will automaticallytransfer to utility supplying power to loads and charge batteries at the sametime. 

See Workflow as below. 

LCD displayed as bellow:

2.2 Battery first, utility standby UPSmode: FREQUENCY in the LCD display is set as 03.  When both utility andbattery are connected to the inverter, battery will supply power to theloads prior to utility. When battery capacity is not enough, utility willcontinue to supply power automatically. 

Steps are as follows: 

Step 1: When battery has enough power, it will supply power to the loadsdirectly 

Step 2: When battery does not have enough power, it will automaticallytransfer to utility supplying power to the loads 

Step 3: After the battery is fully charged (e.g. by solar or wind chargecontroller), it will then automatically transfer to battery supplyingpower to the loads. 

See Workflow as below. 

LCD displayed as bellow:


                                                           Model                             Parameter


Rated Output Capacity


Peak Power


Battery Voltage(DC)


Size W×D×H(mm)


Packing Size W×D×H(mm)


Net Weight (kg) 


Gross Weight (kg) 


General Parameter

Working Mode


Utility first (AC first) battery standby mode



Sleep Mode,no utility,load’s power higher than 5% of  inverter rated output power,it will start to work automatically



Battery first (DC first)utility standby UPS mode

AC Input


220V±35% or 110V+35%(optional)


50Hz±3% or 60Hz±3% (optional)

AC Output


220V±3% or 230V±3 or 240V±3% or 100V±3% or 110V±3% (optional)


50Hz±0.5 or 60Hz±0.5 (optional)

Battery charge

AC Charge Current


Charge Time

Depend on battery capacity and quantity

Battery Protection

Automatic detection, Charge and discharge protection,Intelligent Management


Display Mode


Display Information

Input voltage,output voltage,output frequency,battery capacity,Load condition,Status Information

Output Wave Type

Pure sine wave output,Total Harmonic Distortion THD≤3

Overload Ability

>120% 1 min,>130% 10s

Power Consumption

Sleep Mode


Normal Mode


Conversion Efficiency


Transfer Time

<5ms (AC to DC / DC to AC)


Overload ,Short-circuit,High input voltage,Low input voltage,Overheat









The “optional” parameter can be set as per customer’s requirement 

The above is our standard parameter. Subject to change without prior notice. 

We have our own professional inverter and controller R&D team and weprovide technical support and OEM service. 


Please refer to the outline design, technical documents, productbrochures, etc.

Shenzhen ipandee New Energy Technology & Science Co., Ltd


Contact Person:Henry Feng

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