Congsin Low Frequency Solar Inverter — Reliable Off-Grid Power
Congsin Low Frequency Solar Inverter — Trusted, Rugged Power
The Congsin low frequency solar inverter is designed for users who need dependable, long-lasting DC to AC power in harsh or off-grid environments. Built by Guangzhou Congsin Electronic Technology Co., Ltd., a manufacturer with over 27 years of focused experience, this off-grid inverter brings transformer-based stability and high surge capacity for motors, compressors and heavy loads.
Why choose a low frequency solar inverter?
Low frequency inverters use a heavy-duty transformer to deliver robust, pure sine wave AC output. That means better compatibility with inductive loads, reliable startup for appliances, and greater resilience in fluctuating conditions. For RVs, trucks, off-grid homes, field offices and patrol units, a Congsin low frequency inverter gives peace of mind and long-term durability.
Key features
- Pure sine wave output for clean, stable power suitable for sensitive electronics.
- High surge capability to start motors and compressors with ease.
- Multiple DC input options (12V / 24V / 48V) to match batteries and solar systems.
- Integrated battery charger and smart protection: over-voltage, low-voltage, short-circuit, and thermal protection.
- Rugged design ideal for off-grid and mobile applications such as RVs, trucks, and remote sites.
Built for quality and safety
Congsin operates fully automated production lines and advanced testing equipment to ensure product reliability and efficiency. Our quality management is ISO9001 certified and many models carry CE, EMC, LVD, ETL, FCC, RoHS and E-MARK approvals. Several patents and a long history since 1998 show our commitment to innovation and trustworthy manufacturing in Guangzhou.
Global support and customization
We serve customers across Europe, the Americas, the Middle East, Africa and Southeast Asia. Congsin supports OEM/ODM, private labeling and tailored customization to meet specific project needs. When you choose a Congsin low frequency solar inverter, you get dependable DC to AC conversion backed by experienced engineers and global distribution support.
For a reliable off-grid inverter with proven performance, explore Congsin low frequency solar inverters — engineered for durability, safety and real-world use.
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Certifications
FC Certifcate Number - TST20220503108-45C
ROSH -Certificate Number - TST20220503108-3RC
SGS Certificate
Frequently Asked Questions
Can this inverter power a laptop?
If the laptop power is within 150W and the input is AC220V, it can supply power normally.
What happens if the positive and negative poles are reversed when connecting the battery?
The device features built-in reverse polarity protection. If the positive and negative terminals are connected incorrectly, the circuit will automatically disconnect to prevent damage to the equipment. Simply adjust the battery clip connections (red clip to positive terminal, black clip to negative terminal), then restore power to resume normal operation.
Does it have protection features?
Yes, it includes overload, overheat, and short-circuit protection.
How does reverse protection work?
When the positive and negative poles of the battery are reversed, the inverter will automatically cut off the circuit to avoid device damage and ensure power usage safety.
low frequency solar inverter 12v/24v/48v pure sine wave power inverter2000w 3000w 4000w 5000w 6000w 8000w 10000w 12000w
Pure sine waveform output with built-in transformer and AvR stabilizer(Specially designed to startup inductive
loads such as air conditioner,refrigerators, motors, water pumps, compressorsand laser printers)
Solar hybridinverter built-in 8oA MppT solar controller and ACcharger.
Output voltage(200V/210V/220V/230V/240V)&Output frequency(50Hz/60Hz) can be manuallyregulated at site.
Support Lead acid battery/Gel battery/lithium iron phosphate battery/ternary lithium battery/customized battery.
RS232/RS485 Communicationsportis available.
3 times start-up peak power ofresistingvoltaicimpingement, excellent loading capability.
High conversion efficiency is up to 90%.
Built-in Lithium battery activation function
PVarray Open circuit voltage 230v DC
Support 3 working modes:Mains priority,Battery priority,Pv priority
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CONGSIN is a trusted OEM factory for power inverters, solar charge controllers, and DC converters. Reliable solutions for global B2B buyers.
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