DN400 4KW Off Grid Solar Inverter
Brand: Lersion
Product origin: Foshan,China
Delivery time: 7-15days
Supply capacity: 120000
1 Power frequency scheme design
2 The inverter adopts MCU microprocessor fully digital SPWM control technology
3 Pure sine wave output
D series 4kw single phase inverter/hibrid inverter
1 Product Featrues:
1. The inverter adopts MCU microprocessor fully digital SPWM control technology, with pure sine wave output.
2. Power frequency architecture design scheme, low loss ring transformer, strong load capacity, suitable for capacitive, resistive, inductive, and mixed loads.
3. Complementary charging with mains power and three-stage charging (constant current, constant voltage, float charging) can effectively extend the lifespan of the battery.
4. Built in efficient MPPT solar power point tracking controller（hybrid mode）, the power generation efficiency is 30% higher than the ordinary controller.
5. The dual modes of mains priority and battery priority are optional, with built-in unmanned function.
6. Equipped with complete protection functions such as input over-voltage, under-voltage, output over-voltage, under-voltage, over temperature, overload, and short circuit.
7. Equipped with high-definition LCD display function, supporting the setting of relevant parameters, compatible with lead-acid, colloid, and lithium batteries.
8. Suitable for UPS backup power supply or off grid solar power generation and other occasions.
2 Application
 |  |  |  |  |  |
Residential electricity | Communication base station | Ship/Island | Animal husbandry | Non grid area | Field equipment |
3 Technical Parameters
| Inverter mode | DN150 | DN200 | DN300 | DN400 | DN500 | DN600 |
| Inverter with controller mode | DM150 | DM200 | DM300 | DM400 | DM500 | DM600 |
| Rated power | 1500W | 2000W | 3000W | 4000W | 5000W | 6000W |
| Battery voltage | 24V/48V | 48V | ||||
| Size:(L*W*Hmm) | 430*320*175 | 560*400*200 / 560*450*230(100A) | ||||
| package size (L*W*Hmm) | 500*390*245 | 630*470*270 / 630*520*300(100A) | ||||
| N.W.(KG) | 15 | 20 | 22 | 27 | 29 | 31 |
| G.W.(KG) | 17 | 23 | 25 | 30 | 32 | 34 |
| Input | ||||||
| Phase | L+N+G | |||||
| AC input range | 110V:85-138VAC;220V:170-275VAC | |||||
| Input frequency | 45Hz～65Hz | |||||
| Output | ||||||
| Output voltage | inverter mode:110VAC/220V±5%;AC mode:110VAC/220VAC±10%; | |||||
| Frequency range (AC mode) | Automatic tracking | |||||
| Frequency range (inverter mode) | 50Hz/60Hz±1% | |||||
| Over load capacity | AC mode:(100%～110%:10min;110%～130%:1min;>130%:1s;) | |||||
| inverter mode:(100%～110%:30s;110%～130%:10s;>130%:1s;) | ||||||
| Peak current ratio | 3:1max | |||||
| Conversion time | <10ms(Typical loads) | |||||
| Waveform | Pure sine wave | |||||
| Efficiency | >93%(80% resistive loads) | |||||
| Protection functions | Battery overvoltage protection,battery undervoltage protection,overload protection, short circuit protection,overtemperature protection,etc. | |||||
| built in solar charge controller(adjust) | ||||||
| Max charge current | 40A | 50A | 60A | 100A | 120A | |
| Battery voltage | 24V/48V | 24V/48V | 24V/48V | 24V/48V | 24V/48V | |
| PV input voltage range | 24V:38V-150V；48V:65V-150V；96V:145V-200V | |||||
| Max PV input | 24V:960W 48V:1920W | 24V:1200W 48V:2400W | 24V:1440W 48V:2880W | 24V:2400W 48V:4800W | 24V:2880W 48V:5760W | |
| Cooling method | Fans cooling | |||||
| environmental conditions | ||||||
| Operating temperature | 0℃-40℃ （Battery life decreases at ambient temperatures above 25 degrees Celsius） | |||||
| Operation humidity | <95%（without condesing) | |||||
| Operating altitude | <1000m(with increase of 100m,it will reduce output of 1%) max5000m | |||||
| Noise | <58dB(distance to machine 1m) | |||||
| Management | ||||||
| Display | LCD+LED | |||||
| Computer communication interface | RS232(adjust) | |||||
| *The above data is for reference. If there is any change, please refer to the real object. | ||||||
4 Working mode
D series single phase inverter transformer based unit has three working modes:
DC priority, AC priority， ECO mode
4.1 DC Priority (Must be connected with batteries)
The inverter converts DC input current from either the PV panels or battery bank into AC current to supply the load. When battery voltage is low, the inverter will automatically switch to the main input power (gr/generator) to supply to the load. The system automatically switches back to DC after the batteries are charged again.
4.1.1 PV with battery bank (when PV is sufficient)
4.1.2 Battery only (when PV is not available, but battery power is sufficient)
4.1.3 AC only (when PV is not available, and battery power is insufficient)
4.2 AC Priority (must be connected with batteries)
While the AC input is stable, the inverter works in bypass mode to supply power to the load and charge the battery pack at the same time. When the AC input is too high / too low / serious distortion / abnormal frequency / fault, the system will automatically switch to the battery inverter to supply power to the load. Once the AC input has been stabilized, the system will switch back to bypass mode to supply power to the load automatically
4.2.1 PV is sufficient, AC power is available
4.2.2 PV is sufficient, but AC power is not available
4.2.3 AC power is available but PV is not available
4.2.4 Both AC power and PV are not available
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