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4000W SPLIT PHASE PURE SINE WAVE POWER INVERTER DC24V TO AC110V/220V option A(factory setting): 110v continue power: 4000w Jump cable setting: 2pcs jump cable 1+4 & 2+3 no 220v ac output.; L1+N or L2+N=110V option B: 110V continue power : 2000w 220v continue power : 4000w jump cable setting: 2+4 L1+N=110V, L2+N=110V L1+N2=220V Hi All This is 2024 new forever version 2: A. Control Board and Power MOS Board Replacement For Forever Version 1 , repairing the inverter requires replacing the entire control board and the four power MOS boards. However, you also need to verify that the connector cable between the control board and the main board is correctly aligned, with no shorts. This approach gives about a 70% success rate. In Forever Version 2 , we improved the system by integrating the control system into a single, modular box. This means you only need to replace the control box and the main box for the four power MOS boards. This solution has a 99.99% success rate, extending the inverter's lifespan by 3-5 years with significantly reduced repair costs. B. Improved Manufacturing Standards From July 2024, all inverters are manufactured in Taiwan rather than China, with high-quality silicon steel sourced from TDK, Japan. The silicon steel is formed directly into a coil, unlike in some Chinese products, which use second-hand silicon steel assembled piece by piece. These second-hand coils often contain 5-7 breakpoints, leading to overheating issues. Additionally, when operating a 5000W inverter, if the load exceeds 1500W, the waveform may degrade from pure sine wave (PSW) to a noisy wave, which risks damaging the MOSFET or connected appliances. C. True Continuous Power Rating Our 4000W inverter, weighing approximately 25 kg, provides continuous power. In contrast, other suppliers may claim 6kW continuous power on units that only weigh around 20 kg. C.control box(4.5kgs)+main box(25kgs) The control box can put into the wall, very easy to manager your electricity system, also very easy to replace, if something wrong, just exchage the C box +4pcs power mos board in the main box, may take you 30mins to make the inverter working again. . 1. Low Frequency Pure Sine Wave: This indicates that the inverter produces a sine wave output with a low-frequency design. Low-frequency inverters are generally more suitable for powering heavy loads and are often preferred for certain applications. 2. Power Output: The inverter has a continuous power output of 4000W, which represents the amount of power it can consistently deliver. The peak power of 12000W suggests that the inverter can handle temporary surges or peaks in power demand. 3. Safety Protections: The inverter is equipped with safety features such as low and high voltage protection as well as temperature protection. These protections help safeguard the inverter and connected devices from potential damage due to voltage fluctuations or overheating. 4. DIY Repair Design: The inverter is designed with a "do it yourself" (DIY) repair approach. If something goes wrong with the inverter, you can replace the power MOS board and driver board with screws. This design makes it easier for users to perform repairs without the need for professional assistance. The estimated time for replacement is mentioned as 1 hour. It's important to note that while a DIY repair design can be convenient, users should follow proper safety precautions and guidelines provided by the manufacturer when attempting any repairs on electrical equipment. Additionally, understanding the specific details of the replacement process and having the necessary technical knowledge are crucial for successful and safe repairs. If you have any specific questions or if there's anything else you'd like to know about power inverters, feel free to ask! Specification : Brand CRAFTSMAN Item no. LFPSW-SP-4000-24-110/220V Continuous Output Power 4000W Max Output Power 12000W DC Input Voltage 24V AC Output Voltage 110V & 220V Regulation ±5% Frequency 60HZ±3% Efficiency 90% Output Wave Form Pure Sine Wave Temperature Protection 70C Input Low Voltage Alarm 21V Input Low Voltage shutdown 20V Input High Voltage Alarm 30V Input High Voltage shutdown >30V Dimension 50cm x 32 cm x 20cm Warranty 1 year Net Weight 25Kgs Certificate CE Components Made in Taiwan Design Taiwan