Custom SPH3K-24/48-SP 3.0kW Split-Phase olar off grid inverter
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SPH Series Off Grid Inverter

SPH3K-24/48-SP 3.0kW Split-Phase olar off grid inverter

  • The SPH3K-24/48-SP is a multifunctional off-grid inverter designed by APsolway specifically for 120/240V±5% split-phase power systems. This device supports not only 120Vac single-phase output but also 240Vac split-phase output, perfectly meeting the power requirements of North America and other regions utilizing split-phase grids. With a rated output power of 3.0kW and a peak power capacity of 4.5kVA, it generates high-quality pure sine wave electricity, thereby protecting various sensitive electronic devices from interference.
  • In terms of energy harvesting and management, this model demonstrates exceptional flexibility. It features a built-in MPPT controller with 99% efficiency, supporting a maximum PV array input of 3600W and operating within an MPPT voltage range of 70–280Vdc. A key advantage of the SPH3K-24/48-SP is its battery-free operation mode; even without an installed battery, the system can directly utilize PV energy to power connected loads. 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, enabling deep communication with the battery's BMS via an RS485 interface.
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Technical Parameters
Product Parameters
MODEL SPH3K-24/48-SP
PV Array
Max.PV Array Power 3600W
MaxPVArray Open-Circuit Voltage 300/500VDC
Start-up Voltage 60/100VDC
MPPT Operating Voltage Range 70-280/120-450VDC
Nominal Input Voltage 250/360VDC
Max. Input Current MPPT 30/18A
MPPT max Efficiency 99%
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 100/80A
AC Input
Nominal Voltage 120Vac±5%/240Vac±5%
Voltage Range 180-280Vac
Frequency 50/60Hz(Auto following)
Max.Input Current 40A
AC Output
Nominal Voltage 120Vac±5%/240Vac±5%
Output Voltage Waveform Pure Sine Wave
Rated Output Power 3000VA/3000W
Peak Output Power 4500VA
Nominal Output Frequency 50/60Hz
Transfer Time 10ms
Efficiency (peak)PV to INV 96.5%
Efficiency (peak)BAT to INV 93.0%
Protection
Over Temperature Protection Yes
Overload Protection 3s@≥150%load;10s@110%~150%load
General Data
Operating Temperature Range -10--+50℃
Relative Humidity 0~95%
Max.Operating Altitude <4000m
Cooling Method Intelligent Fan cooling
Display LED+LCD
Communication with BMS RS485
Communication with Cloud WIFI/4G
Degree of Protection IP43
Warranty 2years
Weight(kg)
Dimension(W"H"Dmm) 373*105*300
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

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-SP 3.0kW Split-Phase olar 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-SP 3.0kW Split-Phase olar 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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