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Inverters (DC-AC)
2 Series · 15 Models
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Inverters (DC-AC) Overview
Pure sine wave inverters convert DC battery power (12 V/24 V/36 V/48 V) into clean, grid-quality 220 V AC. QDTB models span 0.5 kW to 10 kW at 50/60 Hz with conversion efficiency above 85% and automatic overload, short-circuit, over-temperature, and over-voltage protection. Pure sine wave output is compatible with sensitive electronics, motors, and inductive loads, serving solar systems, marine vessels, remote sites, backup power, and telecom.
Available Series
LY Series
The LY series pure sine wave inverters convert DC power to clean AC power with pure sine wave output, suitable for sensitive electronic equipment and grid-tied applications.
Low Frequency Power Inverters Series
Low-frequency power inverters convert 48V (or 24V) DC battery power to 220/230V AC with an isolation transformer, providing pure sine wave output and high surge capacity for motors and inductive loads. Rated 1–10 kW for off-grid and backup power.
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Application Scenarios
Off-Grid Solar
Converts battery DC to AC for homes and systems not connected to the grid.
Marine & RV
Runs appliances from the battery bank on boats, yachts and motorhomes.
Backup Power
Keeps essential loads running during outages from a battery source.
Telecommunications
Remote-site power for telecom and monitoring equipment.
Remote & Rural Areas
Reliable AC where grid power is unavailable or unreliable.
Mobile & Field Work
Portable AC for tools, lighting and equipment on work sites.
Technical Advantages
Pure Sine Wave
Clean output compatible with all sensitive electronics, motors and inductive loads.
High Efficiency
Conversion efficiency above 85% minimises battery drain.
Full Protection
Automatic overload, short-circuit, over-temperature and over-voltage shutdown.
Wide DC Input
12V/24V/36V/48V input options to match any battery bank.
FAQ - Inverters (DC-AC)
What is the difference between pure sine wave and modified sine wave?
What size inverter do I need?
Can it run inductive loads like motors?
What capacity and voltage range is available for Inverters (DC-AC)?
What is the minimum order quantity (MOQ) for Inverters (DC-AC)?
What is the delivery time for Inverters (DC-AC)?
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High-Frequency vs Low-Frequency vs Modified Sine Wave Inverter: How to Choose
| Pure Sine (High-Frequency) | Pure Sine (Low-Frequency) | Modified Sine Wave | |
|---|---|---|---|
| Output waveform | Clean sine wave matching grid power | Clean sine wave with a heavy transformer stage | Stepped square wave approximating a sine |
| Surge capability | Moderate surge, set by the switching stage | High surge, because the transformer carries it | Limited surge, and motors run hotter |
| Efficiency at light load | Higher, since the unit is small and light | Lower, because the transformer draws magnetising current | Highest on paper, but only for simple loads |
| Weight & size | Compact and light | Heavy, dominated by the transformer | Compact and light |
| Inductive loads | Runs motors and pumps, within the surge rating | Preferred choice for compressors and pumps | Motors run hot and may refuse to start |
| Sensitive electronics | Safe for instruments, IT and medical gear | Safe, and tolerant of dirty DC input | Can upset power supplies and audio equipment |
| Typical application | Solar systems, telecom and remote sites | Marine, backup power and motor-heavy loads | Simple resistive loads and tools |
Where QDTB® Inverters Are Specified
Inverters are specified where the load runs from a battery rather than the grid: off-grid solar systems, remote and rural sites, telecom cabinets and mobile or field work. A pure sine wave output is what lets the same inverter run a laptop supply, a pump and a measuring instrument without the load derating or overheating.
Marine and RV installations choose the low-frequency types where a compressor or a winch has to start on a battery bank, because the transformer stage carries the surge that the switching stage alone cannot. Backup power schemes use the same units to keep a defined load group alive while the mains is down.
Sizing starts from the running watts of everything the inverter will feed, plus the starting surge of the largest motor. The surge is what most often decides the rating, not the steady load, which is why a pump can drive the choice over a larger but gentler load.
The range spans 0.5 kVA to 30 kVA at 50/60 Hz with conversion efficiency above 85%. Automatic overload, short-circuit, over-temperature and over-voltage protection are built in so a stalled load does not take the inverter with it.
Frequently Asked Questions
What is the difference between pure sine wave and modified sine wave?
Pure sine wave matches grid power and runs everything, including motors and sensitive electronics. Modified sine wave is cheaper but can damage or fail to run some loads.
What size inverter do I need?
Sum the running watts of your loads plus the surge of the largest motor. Choose an inverter rated above the peak, typically 1.5-2x continuous load.
Can it run inductive loads like motors?
Yes. Pure sine wave inverters handle motor starting surges; allow for 3-5x running current at start-up.
What capacity and voltage range is available for Inverters (DC-AC)?
QDTB® supplies Inverters (DC-AC) from 0.5 to 30 kVA.
What is the minimum order quantity (MOQ) for Inverters (DC-AC)?
One unit for standard products. Custom-designed equipment is quoted on specifications — send your parameters or drawings and our sales team will confirm the MOQ for your configuration.
What is the delivery time for Inverters (DC-AC)?
Standard units are delivered in 30-45 days. Custom or large-capacity units follow a project-specific schedule confirmed at quotation. Rush orders can be accommodated for urgent projects.