low frequency power inverter charger 1KW 1.5KW 2KW 3KW 4KW 5KW 6KW

low-frequency pure sine wave inverter with AC charger and auto transfer switch system. Capacity: 1kw 1.5kw 2kw 3kw 4kw 5kw 6kw Voltage: 12V 24V 48V Application: solar power system, wind solar system, hybrid solar-wind system, home backup system AC output: 110V, 120V, 220V, 240V 50/60Hzsingle phase

low-frequency power inverter 4000W 48V: 

* pure sine wave output

* Single phase 110V, 120V, 220V, 240V AC output

* AC mains priority/DC priority modes optional

* built-in AC bypass replay, UPS function

* multi-stage smart charger 30A charges gel, AGM, lithium battery

* 4msec typical transfer time

* LCD display working data: AC input AC output, DC input, battery, load, charger current, battery 



Q1: Can I have a sample/trial order for a test?

A: Yes, we accept sample order/trial order for you testing by 1 product or mixed solar products.


Q2: When will you deliver the goods?

A: 3-5 working days for sample order; 7-15 working days for quantity order after receiving the deposit payment.


Q3: Do you offer a guarantee for your solar products?

A: Yes, 18 months for inverter and inverter related products including solar generator, solar inverter. 2 years for solar lights.


Q4: Can you do OEM/ODM?

A: Yes, we accept OEM/ODM orders for inverter, solar inverter, MPPT solar controllers, solar generator and solar lights.

Please send you detailed request to our sales specialist for best quote.


Model WI-1000W WI-1500W WI-2000W WI-3000W WI-4000W WI-5000W WI-6000W
Rated power 1KW 1.5KW 2KW 3KW 4KW 5KW 6KW
Peak power 3KW 4.5KW 6KW 9KW 12KW 15KW 18KW
Nominal battery voltage 12V/24V DC 12V/24VDC 12V/24V/48VDC 24V/48VDC 24V/48VDC 48VDC 48VDC
Input DC input range 10.5V-16VDC(12V); 21V-32VDC(24V);  42V-64VDC(48V)
AC Mains input range 165-265VAC(220VAC) ±3%; 75-125VAC(110VAC)±3%
AC input frequency 50Hz: 45-65Hz/60Hz: 55-65Hz±0.5Hz(50Hz/60Hz automatic recognition)
Protection Low battery alarm 10.3VDC(12V); 20.6VDC(24V);  41.2VDC(48V)
Low battery protection ≤10VDC(12V);  ≤20VDC(24V); ≤40VDC(48V)
High battery alarm >16VDC12V); >32VDC(24V); >64VDC(48V)
High battery protection >16.5VDC(12V); >33VDC(24V); >66VDC(48V)
Overload protection >120%, shut down after 10 seconds
High temperature Built-in temperature real-time sensor, >85°C alarm, >90°C automatic shutdown
Short circuit protection Automatic shutdown
Output efficiency >90%
Output voltage (DC battery mode)220VAC±5% 110VAC±5%
Output frequency (DC battery mode)60/50Hz± 1%
Output waveform Pure sine wave
Output voltage (AC mains mode)220/230/240VAC± 5% output 
AC mains output AC mains > 170VAC±5% switch to DC battery mode, AC mains > 180VAC±5% return to AC mains mode;
AC mains > 275VAC±5% switch to DC battery mode, AC mains > 255VAC±5% return to AC mains mode;
The above is for 220V output for reference
Output frequency (AC mains mode)automatic tracing from AC input
Other Transfer time Built-in AC bypass replay  (4ms)
Display LCD Display with function buttons
Cooling system Intelligent cooling fan control system <42°C slow fan, >45°C fast fan
AC Charger battery types mode Gel, AGM, Li-ion, LiFePo4 battery, customized
AC charging voltage 14V-16VDC(12V); 28V-32VDC(24V); 56V-64VDC(48V)
AC charging current 0-30A:5A/10A/20A/30A  4 stages charging current adjustable
3 Stages charging Boost charging, direct charging, float charging
AC overcharge protection   ≥16.5VDC(12V); ≥33VDC(24V); ≥66VDC(48V)
Communication RS-232/USB/SNMP(additional)
Environment Temperature -10~+40°C
Humidity <95%
Appearance Product size 450*270*180mm(L*W*H) 545*290*190mm(L*W*H)
Packing size 490*285*220mm 590*305*240mm
Net weight(kg) 11 13 14.5 21 23 25 28
Gross weight(kg) 14  16 19 28 28 30 33

Applications for 4KW power inverter/charger:

  1. Renewable power system such as solar power system, wind power system
  2. UPS Uninterruptible power supplies, power backup system
  3. transportation: vehicles, RV(recreational vehicle), boat, yacht
  4. emergency vehicles: fire trucks, rescue vehicles, ambulances
  5. power tools 
  6. farms, villa, office, home etc.