Our Pure Sine Wave Inverter use a microprocessor controlled SPWM technology, pure sine wave output.
Unique dynamic current loop control technology to ensure reliable operation of the inverter.
Load adaptability, including capacities, inductive, mixed load. Strong overload and impact resistance.
The Pure Sine Wave Inverter with over voltage, under voltage, over temperature, overload protection function.
The inverter front panel LED display, display the battery voltage current power and some others.
Performance stability, safety and reliability, long life.
Technical Specifications
| Type | 1000VA | 1500VA | 2000VA | 3000VA | 4000VA | 5000VA | 6000VA |
|---|---|---|---|---|---|---|---|
| Rated Voltage (V) | 24/48 | 48 | |||||
| Output Voltage (V) | 220±5% | ||||||
| Output Frequency (Hz) | 50±2% | ||||||
| Rated Output Current | 3.6A | 5.4A | 7.3A | 10.9A | 14.5A | 18.2A | 21.8A |
| THD | <5% | ||||||
| Max Efficiency | >85% | ||||||
| Under-voltage (V) | 21.6/43.2 | 43.2 | |||||
| Under-voltage Protection (V) | 26.4/52.8 | 52.8 | |||||
| Over voltage (V) | 31.5/63 | 63 | |||||
| Over voltage Recover (V) | 30/60 | 60 | |||||
| Status Indicator | Solar charging, the battery voltage is abnormal, load power, the inverter instructions, overload status | ||||||
| Display | Numerical battery voltage, output voltage, load power, the charging current | ||||||
| Protection | Over voltage, under-voltage, reverse polarity, over temperature, output overload, short circuit protection | ||||||
| Working Temperature (°C) | -20~50°C | ||||||
| Allow Relative Humidity | ≤95% Non-condensing | ||||||
| Altitude | ≤6000m | ||||||
| Dielectric Strength | 1500Vac, 60s | ||||||
| Comm. function | Standard RS485, optional RS232, GPRS | ||||||
| Size | W x H x L: 256x200x540(mm) | ||||||
Pure sine wave output: it has stronger load effect and load capacity than square wave or modified sine wave (step wave). The equipment can carry inductive load and any other type of general AC load. It can carry refrigerator, TV, radio and other equipment without interference and noise, and will not affect the performance and service life of the load equipment.
High stability: has perfect protection functions such as over voltage, under voltage, overload, overheating, short circuit and reverse connection, so as to ensure the stability of the system.
Communication function: the user can choose to add RS485 comm. function to observe the data of the system.
Digital display: display battery voltage; Output voltage; Output current; Output power and other parameters.
High efficiency transformer isolation: high inverter efficiency and low no-load loss.
Digital intelligent control: the core device is controlled by single chip microcomputer, makes the structure simple, flexible and powerful.
Specifications
| Model type | 10KVA | 20KVA | 30KVA | 20KVA | 30KVA | 50KVA | 100KVA |
|---|---|---|---|---|---|---|---|
| Rated Voltage (V) | 240VDC/480VDC | 480VDC | |||||
| Output Voltage (V) | 220VAC±5% | Line voltage: 380VAC; phase voltage: 220VAC | |||||
| Output Frequency (Hz) | 50Hz±0.05 | ||||||
| Rated DC Current | 36.4A | 72.7A | 109.1A | 31A | 46A | 75A | 151A |
| Max Efficiency | >85% | ||||||
| Under Voltage (V) | 216VDC/432VDC | 432VDC | |||||
| Under Voltage Recover (V) | 240VDC/480VDC | 480VDC | |||||
| Over Voltage (V) | 315VDC/630VDC | 630VDC | |||||
| Over Voltage Recover (M) | 300VDC/600VDC | 600VDC | |||||
| THD | <5% | ||||||
| Display | Battery voltage, output voltage, output current, output frequency, output power, output frequency | ||||||
| Protection Way | Inverter input over voltage protection, battery over discharge protection, battery reverse connection protection, battery under voltage protection, output overload protection, output short circuit protection and overheating protection | ||||||
| Working Temperature (°C) | -25°C~+55°C | ||||||
| Working Humidity | ≤90% (non-condensing) | ||||||
| Altitude | ≤5000m | ||||||
| Insulation Strength | 1500Vac, 60s | ||||||
| Communication | Standard RS485, optional RS232, GPRS | ||||||
Here’s a step-by-step explanation of how a pure sine wave inverter works:
-
DC Input and Initial Conversion
The inverter starts with a DC voltage input. Internally, this DC voltage is usually “boosted” or conditioned in a DC bus section, which may involve converting it to a higher DC voltage that is more suitable for creating the desired AC output. -
High-Speed Switching Using PWM
- Pulse Width Modulation (PWM): The inverter uses electronic switches—typically MOSFETs or IGBTs arranged in an H-bridge or full-bridge configuration—to chop the DC voltage on and off at a very high frequency.
- Creating a Sine Wave Profile: By carefully controlling the timing and duration (or “width”) of these pulses using a PWM technique, the inverter produces a waveform whose average voltage over time mimics the shape of a sine wave. In other words, the pattern of pulses is modulated so that, when averaged over a short period, it follows the smooth sinusoidal curve.
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Filtering the PWM Signal
Although the PWM technique creates a sine-like average voltage, the output is still a series of rapid on-off pulses that contain high-frequency components (harmonics) in addition to the desired fundamental sine wave frequency (e.g., 50 or 60 Hz).- LC Filter (Inductor-Capacitor Network): To remove these unwanted high-frequency components, the PWM signal is passed through a filter (commonly an LC filter). This filter smooths out the pulses, effectively “averaging” them into a clean, continuous sine wave.
-
Output as a Pure Sine Wave
After filtering, the inverter’s output is a pure sine wave AC voltage that closely resembles the utility power waveform. This clean output is ideal for sensitive electronics and other devices that require a stable and smooth AC supply. -
Control and Regulation
Modern pure sine wave inverters often include microcontrollers or digital signal processors (DSPs) that continuously monitor the output. These controllers adjust the PWM patterns in real time to maintain a stable frequency and voltage, even under varying loads. This feedback loop ensures that the output remains a high-quality sine wave regardless of changes in the input or the load conditions.
A pure sine wave inverter is used to convert direct current (DC) power from batteries into alternating current (AC) power that closely mimics the standard household electricity, allowing you to safely power a wide range of electronic devices and appliances, particularly sensitive ones like laptops, refrigerators, medical equipment, and appliances with motors, without risking damage due to irregular power fluctuations; essentially providing a clean and stable power source similar to what you get from a wall outlet.
Cost:Pure sine wave inverters are generally more expensive than modified sine wave inverters.
Key steps to reset a pure sine wave inverter:
Check for error indicators: Before resetting, look for any LED lights or displays indicating an error code on the inverter.
Disconnect the load: Turn off all appliances plugged into the inverter before resetting.
Power off the inverter: Locate the power switch on the inverter and turn it to the "off" position.
Wait a few seconds: Allow a brief pause (around 5-10 seconds) to fully reset the system.
Power back on: Turn the inverter back on and monitor its status.
Example: If you want to run a 100W TV, a 200W coffee maker, and a 500W microwave simultaneously, your total wattage would be 800W. To be safe, you should choose a pure sine wave inverter with at least 1000W capacity.
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