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Custom SPH3K-24/48 3.0kW Single Phase Solar off grid inverter
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  • SPH3K-24/48 3.0kW Single Phase Solar off grid inverter
  • SPH3K-24/48 3.0kW Single Phase Solar off grid inverter
SPH Series Off Grid Inverter

SPH3K-24/48 3.0kW Single Phase Solar off grid inverter

  • SPH3K-24/48 3.0kW Single Phase Solar off grid inverter features a rated output power of 3.0 kW and delivers a peak power of up to 4500 VA, enabling it to effectively support the instantaneous startup of loads in small homes or offices.
  • This inverter utilizes a pure sine wave output, ensuring high-quality and stable power delivery. One of its most significant design highlights is its battery-free operation mode; it can utilize PV energy to supply power even without a connected battery, thereby greatly enhancing system flexibility.
  • Regarding PV energy harvesting, the SPH3K-24/48 incorporates a high-performance built-in MPPT controller with an efficiency rating of up to 99%. It supports a maximum PV array power of up to 3600 W, with a wide PV input voltage range spanning from 70 to 280 Vdc. The device is compatible with both 24V and 48V battery systems—supporting both lithium-ion and lead-acid batteries—and integrates a lithium battery activation function as well as BMS communication capabilities via RS485.
  • To withstand demanding installation environments, the unit features built-in dust-protection components, achieving an IP43 protection rating.
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Technical Parameters
Product Parameters
MODEL SPH3K-24/48
PV Array
Max.PV Array Power 3600W
MaxPV Array Open-Circuit Voltage 300VDC
Start-up Votage 60VDC
MPPT Operating Voltage Range 70-280VDC
MPPT Efficiancy 99%
Nominal Input Voltage 250VDC
Max. input Current MPPT 30A
Battery
Battery Type Li-ion/Lead-acid
Nominal Battery Voltage 24/48V
Battery Voltage Range 21-29/41-58V
Max.AC Charging Current 40A
Max.PV Charging Current 80A
Max.Continuous Discharging Current 100A
AC Input
Nominal Voltage 120Vac
Voltage Range 90-140Vac
Frequency 50/60Hz (Auto following)
High Loss Frequency 65Hz
Low Loss Frequency 45Hz
Max. input Current 40A
AC Output
Nominal Voltage 120Vac±5%
Output Voltage Waveform Pure Sine Wave
Rated Output Power 300OVA/3000W
Peak Output Power 4500VA
Nominal Output Frequency 50/60Hz
Transfer Time 10ms
Max.PV to AC Efficiency 96.5%
Max.Battery to ACEfficiency 91.0%
Protection
Over Temperature Protection Yes
Overload Protection 3s@≥150%load;10s@110%~150%load
General Data
Operating Temperature Range -10--+50℃
Safety Certification CE
Relative Humidity 0~95%Relative Humidity(Non-condensing)
Max.Operating Altitude <4000m
Cooling Method Intelligent Fan cooling
Display LED+LCD
Degree of Protection IP43
Warranty 2 years
Weight(kg) 6.5 
Dimension(W*H*Dmm) 326*275*95
Mounting Method Wall Mounted

Product specifications are subject to change without further notice. 

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Product Application
Applicable Fields
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  • OEM/ODM Solutions

    OEM/ODM Solutions

  • Residential Off-Grid Energy Storage

    Residential Off-Grid Energy Storage

  • Residential Grid-Tied Energy Storage

    Residential Grid-Tied Energy Storage

  • Commercial & Industrial Energy Storage Solutions

    Commercial & Industrial Energy Storage Solutions

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About Us
APsolway Technology
Altenergy Power System Inc. is a high-tech manufacturer specializing in power electronics. The company is publicly listed on the SSE STAR Market (Stock Code: 688348). Headquartered in Jiaxing, Zhejiang Province, it also operates a production base in the same city. To support its global reach, the company has established branches and subsidiaries in key international markets, including Texas (USA), Leipzig (Germany), Amsterdam (Netherlands), Brisbane (Australia), Paris (France), Mexico, and other major regions. Zhejiang APsolway Technology Co., Ltd., a subsidiary of Altenergy Power System Inc., focuses on residential energy storage solutions. As SPH3K-24/48 3.0kW Single Phase Solar off grid inverter Manufacturers, the company is dedicated to the research, development, and production of hybrid and off-grid inverters, offering single-phase, three-phase, and split-phase models ranging from 3 to 20 kW.
As a leading provider of residential solar energy storage solutions, SPH3K-24/48 3.0kW Single Phase Solar off grid inverter Factory in China, APsolway stands out with innovative designs and a range of unique, differentiated features. We also offer OEM/ODM services and can deliver fully customized solutions to meet our customers’ specific needs.
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