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Home > Products > I-Panda SPC Series Inverter > I-P-SPC Low Frequency Solar Po.....


I-P-SPC Low Frequency Solar Power Inverter with Built-in Solar Charge Controller 350WI-P-SPC Low Frequency Solar Power Inverter with Built-in Solar Charge Controller 350W

I-P-SPC Low Frequency Solar Power Inverter with Built-in Solar Charge Controller 350W

  • Function
  • Battery charge Ups  AVR voltage regulator
  • Strong overload ability
  • Low frequency Design
  • DC first /AC first
  • Sleep Function
  • Charge Function
  • DC to AC Funiction
  • UPS Function
  • Output wave form:Pure sine wave
  • Material:Metal
  • Display:LCD and LED
  • controller built-in: yes
  • modul structure: Yes
I-P-SPC Series Low Frequency Solar PowerInverter with Built-in Solar Charge Controller 350W


1)Highquality low frequency pure sine wave inverter(with utility charge   

functionand UPS function)

2)Built-in PWMsolar power charge controller



1)Off-grid solar power system

2) Utility and solar complementarypower generation system


1) Easy toinstall. To configure a solar system, users just need to connect it with solarpanels and batteries.

2)CPUmanagement,Intelligent control,modular design

3)LEDs LCDdisplay. LCD can display various parameters(such as the output voltage, frequency,working mode)

4)Multifunctiondesign, AVR UPS function. Users don’t need to buy solar, controller, AC chargeror stabilizer.

5) External battery connection, it’sconvenient for users to expand use time and back-up power time

6)Withsuper load-carrying ability and high load capacity, this series of  inverters can not only drive resistance load;but also various kinds of inductive loads such as motor, air conditioner,electric drills, fluorescent lamp, gas lamp. It can drive almost any kinds ofload

7)Lowfrequency pure sine wave circuit design, stable quality, easy to maintenance, lowfailure rate and long service life (underproper operation, it can last atleast 5 years)

8) Perfectprotection: low voltage protection, high voltage protection, over temperature protection,short-circuit protection, overload protection

9) CE /EMC / LVD/ RoHS /FCC approvals

10) 2years warranty, life-long technicalsupport




Off-grid solarpower system

1.   When connected withbattery and AC loads,users can set it to normal working mode or sleep mode. 



1.1 Normal workingmode:FREQUENCY in the LCD display is set to01. No matter it’s connected AC loads or not, theinverter always convert DC to AC.  It’sready to supply power to the AC loads. In this mode, the LCD will displayoutput voltage as bellow:


 1.2  Sleep mode:FREQUNCYin the LCD display is set as 02.If the power of the connected AC loads is lowerthan 5% of the inverter’s rated power, there will be no output from theinverter. Only the chip of inverter is working. The power consumption of theinverter is only 1-6W. The LCD shows the output voltage 0. If the power of theconnected loads is over 5%,then the inverter will automatically convert DC toAC to supply power for the loads within 5s. The LCD shows the output voltage.As shown below:


Kindly note:

1) Only thesolar panel charges the battery

2) Off-gridsolar power system. It is suitable for areas that are lack of utility orplentiful solar


Utility and solar complementarypower generation system


2. UPSfunction  When the inverter is connectedto battery and utility, users can set it to utility first (AC first) batterystandby mode or battery first (DC first)utility standby mode.

2.1.Utility first (AC first) battery standby mode: FREQUENCY in the LCD display is set to 01. When utility and battery areconnected to the inverter, utility will supply power to the loads prior. Whenutility is cut off, the battery will automatically continue to supply power viapower inverter.

   Steps are as follows:

   Step 1: When utility is available, it will drivethe loads directly after voltage being stabilized and at the same time chargebatteries via power inverter .

   Step 2: When utility is cut off, theinverter will convert DC to AC automatically to ensure uninterrupted powersupply within 5ms.

   Step 3: When utility is available again,inverter will automatically transfer to utility supplying power to loads andcharge batteries via power inverter at the same time.

See Workflow as below.


LCDdisplayed as bellow:


                                                            Utility supply power and chargebattery         Withoututility and battery supply power

Kindly note:

1) There are 2 ways to charge the battery, utility and solarpanel

2) This system is suitable for power systems built in areas thatare lack of utility. Or people can use solar and utility at the same time.

2.2. Batteryfirst (DC first)utility standy mode: FREQUENCY in the LCD display is set as 03. When utility andbattery are connected to the inverter, battery will supply power to the loadsprior to utility. When battery capacity is not enough, utility will continue tosupply power automatically.

Stepsare as follows:

Step 1: When battery is available, it will drive the AC loadsvia power inverter.

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 orwind charge controller), it will automatically transfer to battery supplyingpower to the loads via power inverter.

See Workflow as below.



LCDdisplayed as bellow:


                                         Batteryavailable to supply power         Battery unavailable,utility supply power      



1)There is only one way to charge the battery: solar panel

2) This system is suitable for areas where electricity isexpensive or environmental areas where solar power can be fully used to save utilitybill.such as home solar&wind system,streetlight solar&wind system





Rated Output Capacity


Peak Power


Battery Voltage(DC)

12V or 24V

PWM Solar Controller


12V or 24V



PV Max Input Voltage

12V System:25V

24V System:50V

Size W×D×H(mm)


Packing Size W×D×H(mm)


Net Weight (kg)


Gross Weight (kg)


General Parameter

Working Mode (Setting)


Utility first (AC first) battery standby mode


Sleep Mode,no utility,load’s power is over 5% of rated output power, Inverter start to work automatically


Battery first (DC first)utility standby mode

AC Input


220V±35% or 110V+35%(Optional)


50Hz±3% or 60Hz±3% (Optional)

AC Output


220V±3% or 230V±3 or240V±3% or 100V±3% or 110V±3% (Optional)


50Hz±0.5 or 60Hz±0.5 (Optional)

Utility charge

AC Charge Current


Charge Time

Depend on battery capacity and quantity

Battery Protection

Automatic detection, Charge and discharge protection,Intelligent Management

PV Charge

Total Current of PV Input Should Be Less Than Rated Current of PWM solar controller


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 output,short-circuit,high-voltage input,low-voltage input,overheat








Theabove is our standard parameter. Subject to change without prior notice.

 Wehave our own professional inverter and controller R&D team and we provide technical support and OEM ODM service

Thecontroller information above is our company’s standard parameter.It can bechanged to other PWM solar charge controller.

Connection Diagram


Please see the outline of the design,technical documents,usermanuals,product brochures, etc.Research and development department made  1st edition on May 5, 2014.

Shenzhen I-Panda New Energy Technology & Science Co., Ltd


Contact Person:Henry Feng

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