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SEI series
SEI series SEI series SEI series SEI series SEI series SEI series

IP65 Waterproof Grade Pure Sine Wave Solar Inverter SEI Series

  • Model: SEI-5.5K-S
  • Full digital double closed-loop control, combined with advanced SPWM technology to output pure sine wave;
  • Advanced MPPT technology ensures 99.9% efficiency;
  • Segmented charging and discharging function;
  • Backflow prevention and grid connection;
  • Insulation resistance and leakage current detection;
  • Lithium battery dual activation function, which can be triggered by mains or PV;
  • Power saving mode to reduce no-load loss;
  • Full protection, including overload and short circuit protection, under-voltage and over-voltage protection, and reverse polarity protection;
  • 4 charging modes: Solar Only, Mains Priority, Solar Priority, and Solar&Mains Charging;
  • 2 output modes: mains bypass and inverter output for uninterrupted power supply;
  • LCD screen and LED indicator design for real-time display of system data and operating status;
  • ON/OFF switch for AC output control;
  • Intelligent adjustable speed fan for efficient heat dissipation and extended system life;
  • IP65 waterproof level for wide application use.
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SEI series is a solar hybrid inverter integrating solar energy storage, mains charging energy storage, and AC sine wave output. It adopts DSP control and state-of-art control algorithm, ensuring high response speed, high reliability, and high industrialization standards.

SEI series
SEI series

It has 4 charging modes: Solar Only, Mains Priority, Solar Priority, and Mains & Solar Charging, and 2 output modes, Inverter and Mains Power, to meet different application needs.

This inverter has complete protections, including overload and short circuit protection, under-voltage and over-voltage protection, and reverse polarity protection, ensuring great safety and stability. With IP65 protection grade, this SEI series inverter can be widely used for indoor and outdoor applications.

SEI series
Model SEI-5.5K-S
Battery Input Parameters
Rated Battery Input Voltage 48V ( Minimum Startup Voltage 44V)
Hybrid Charging Maximum Charging Current 100A
Battery Voltage Range 40Vdc~60Vdc ± 0.6Vdc(Undervoltage Warning/Shutdown Voltage/Overvoltage
Warning/Overvoltage Recovery…)
Solar Input Parameters
Maximum PV Open-circuit
Voltage		 500Vdc
PV Working Voltage Range 120-500Vdc
MPPT Voltage Range 120-450Vdc
Maximum PV Input Current 22A
Maximum PV Input Power 6000W
Maximum PV Charging Current 100A
Mains Input Parameters
Mains Maximum Charging
Current		 60A
Rated Input Voltage 220/230Vac
Input Voltage Range UPS Mains Mode：(170Vac~280Vac)土2%
APL Generator Mode：(90Vac-280Vac)±2%
Frequency 50Hz/ 60Hz (Automatic Detection)
Mains Charging Efficiency >95%
Switch Time (bypass and inverter) 10ms(Typical Value)
Maximum Bypass Overload Current 40A
AC Output Parameter
Output Voltage Waveform Pure Sine Wave
Rated Output Voltage (Vac) 230Vac (200/208/220/240Vac）
Rated Output Power (VA) 5500（4780/4970/5260/5500）
Rated Output Power(W) 5500（4780/4970/5260/5500）
Peak Power 11000VA
On-load Motor Capacity 4HP
Output Frequency Range(Hz) 50Hz土0.3Hz/60Hz±0.3Hz
Maximum Efficiency >90%
No-load Loss Non Energy-saving Mode: ≤50W
Energy-saving Mode：≤25W (Manual Setup）
Basic Parameters
Certificate CE(IEC 62109-1)
EMC Certification Level EN61000
Working Temperature Range -25°C ~ 55°C
Storage Temperature Range -25°C ~ 60°C
Humidity Range 0% to 100%
Waterproof Grade IP65
Size(L*W*D) 556*345*182 mm (21.9*13.6*7.2 in)
Weight 19.2 kg (42 lbs)

Technical Parameters

Model SEI-5.5K-S
Battery Input Parameters
Rated Battery Input Voltage 48V ( Minimum Startup Voltage 44V)
Hybrid Charging Maximum Charging Current 100A
Battery Voltage Range 40Vdc~60Vdc ± 0.6Vdc(Undervoltage Warning/Shutdown Voltage/Overvoltage
Warning/Overvoltage Recovery…)
Solar Input Parameters
Maximum PV Open-circuit
Voltage		 500Vdc
PV Working Voltage Range 120-500Vdc
MPPT Voltage Range 120-450Vdc
Maximum PV Input Current 22A
Maximum PV Input Power 6000W
Maximum PV Charging Current 100A
Mains Input Parameters
Mains Maximum Charging
Current		 60A
Rated Input Voltage 220/230Vac
Input Voltage Range UPS Mains Mode：(170Vac~280Vac)土2%
APL Generator Mode：(90Vac-280Vac)±2%
Frequency 50Hz/ 60Hz (Automatic Detection)
Mains Charging Efficiency >95%
Switch Time (bypass and inverter) 10ms(Typical Value)
Maximum Bypass Overload Current 40A
AC Output Parameter
Output Voltage Waveform Pure Sine Wave
Rated Output Voltage (Vac) 230Vac (200/208/220/240Vac）
Rated Output Power (VA) 5500（4780/4970/5260/5500）
Rated Output Power(W) 5500（4780/4970/5260/5500）
Peak Power 11000VA
On-load Motor Capacity 4HP
Output Frequency Range(Hz) 50Hz土0.3Hz/60Hz±0.3Hz
Maximum Efficiency >90%
No-load Loss Non Energy-saving Mode: ≤50W
Energy-saving Mode：≤25W (Manual Setup）
Basic Parameters
Certificate CE(IEC 62109-1)
EMC Certification Level EN61000
Working Temperature Range -25°C ~ 55°C
Storage Temperature Range -25°C ~ 60°C
Humidity Range 0% to 100%
Waterproof Grade IP65
Size(L*W*D) 556*345*182 mm (21.9*13.6*7.2 in)
Weight 19.2 kg (42 lbs)

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