Central Inverter Designed for Residential and Small Commercial PV Installations

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Product Description:

EA4KDL/EA4K6DL/EA5KDL/EA6KDL    

EA4KDL / EA5KDL / EA6KDL is designed for residential and small commercial PV installations. This inverter has dual input section to process two strings with independent MPPT, high speed and precise MPPT algorithm for real-time power tracking and energy harvesting, as well as transformerless operation for high performance efficiencies of up to 97.5%. The wide input voltage range makes the inverter suitable to low power installations with reduced string size. This outdoor inverter has been designed as a completely sealed unit to withstand the harshest environmental conditions.

   

● Transformerless, maximum efficiency up to 97.5%
● Dual input sections with independent MPP tracking, allows optimal energy harvesting from two sub-arrays oriented in different directions
● Wide MPPT range, convenient for module configuration
● High speed and precise MPPT algorithm for real time power tracking and improved energy harvesting
● High reliability with full protective functions
● Ideal for outdoor installations
● Water-proof direct plug-in terminals
● Multilingual LCD, easy to operate
● Integrated multi-communication interfaces, easy to monitor
● TÜV, AS4777, CE, CQC certification

 

Specification/Type

EA4KDL

EA4K6DL

EA5KDL

EA6KDL

Input (DC)

Max DC Power

4400Wp

5000Wp

5500Wp

6600Wp

Max DC Voltage

520V

520V

520V

520V

Recommend PV Array DC Voltage

480V

480V

480V

480V

Full-load MPPT Voltage Range

180-420V

180-420V

180-420V

180-420V

Number of Independent MPPT

2

2

2

2

Max DC Current for Each MPPT

12A

14A

15A

18A

Number of DC Inputs

4(2 for each MPPT)

4(2 for each MPPT)

4(2 for each MPPT)

4(2 for each MPPT)

MPPT Efficiency (Static)

99.5%

99.5%

99.5%

99.5%

Output (AC)

Nominal AC Power

4000W

4600W

5000W

6000W

Nominal AC Voltage

230Vac

230Vac

230Vac

230Vac

Nominal AC Current

18A

20A

22A

26A

Nominal Frequency

50Hz/60Hz

Frequency Tolerance Range

47.5-50.2Hz/57.5-60.2Hz

Distortion (THD)

<3% (at rated power)

Output DC Current Injection

<0.5% (at rated current)

Power Factor (Cos phi)

>0.99

Number of Grid Phases

1

System Parameters

Max Efficiency

97.6%

97.6%

97.6%

98.6%

Euro Efficiency

97.0%

97.0%

97.0%

97.3%

Night Consumption

0W

Topology

Transformerless

Acoustic Noise Level

50dB(A)

Operation Temperature Range

-20℃~+60℃

Relative Humidity

4~100%(no condensation)

Protection Type

IP65

Above Sea Level

1000m

Structure Parameters

Dimensions(W×D×H)

450×200×540mm

Weight

25kg

25kg

28kg

28kg

Others

Communication

RS485,USB(Optional),Ethernet (Optional)

Display

Wide-screen LCD

·         Q. What's lifetime of a UPS ?

Most plug-in UPS are workable for at least five years. We'd advise you to change the batteries every three to four years. For larger equipment, we maintain equipment for twenty years old and still going strong.

·         Q. How to maintain a UPS ?

There are three simple methods:  Never overload your UPS, never connect any home electronic devices such as cooling fan to your UPS. This may cause malfunction of your UPS. Discharge the battery in a consistent interval, once a month or once two months.  You can do this by turning on the UPS without connecting the mains.

 

 

 

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Q:What are the methods of photovoltaic grid-connected inverter control
Inverter main circuit need to have a control circuit to achieve, generally have square wave and sine wave two control methods, square wave output inverter power supply circuit is simple, low cost, but low efficiency, harmonic components. Sine wave output is the development trend of the inverter, with the development of microelectronics technology, there are PWM function of the microprocessor has also come out, so the sine wave output inverter technology has matured.
Q:Grid-connected inverter is generally divided into photovoltaic power generation grid-connected inverter, wind power grid-connected inverter, power equipment and grid-connected inverter and other power generation equipment power generation inverter.
The small use of field-effect transistors while using a DSP conversion controller to improve the quality of the output power makes it very close to the sine wave current.
Q:What is the difference between a PV inverter and a solar inverter?
The main component of the inverter is the three-phase bridge converter. The main purpose of the grid-connected inverter is to change the power to DC and change the AC power. The main purpose is to improve the power quality (because the wind power generation is very large
Q:Three-phase photovoltaic inverter grid, the use of phase-locked loop is what?
In addition to the function of converting DC current into alternating current, the inverter also has the maximum output tracking function (MPPT), overvoltage protection, short circuit protection, island protection, overheat protection, overload protection and DC grounding
Q:The working principle of photovoltaic grid - connected inverter
In the small-capacity inverter generally push-pull inverter circuit, full-bridge inverter circuit and high-frequency step-up inverter circuit three, push-pull circuit, the step-up transformer neutral plug connected to the positive power supply, two power Alternating current, the output to get AC power, due to the power transistor to ground, drive and control circuit is simple, and because the transformer has a certain leakage inductance, can limit the short circuit current, thus improving the reliability of the circuit. The disadvantage is the low utilization of the transformer, driving the emotional load is poor.
Q:What is the difference between a grid-connected inverter and an off-grid inverter? What are the advantages of a hybrid inverter?
Off-grid inverter is equivalent to their own to establish an independent small power grid, mainly to control their own voltage, is a voltage source.
Q:PV grid-connected inverter can directly load it?
Grid-connected inverter is like a car file, he first detects the grid waveform, can not detect not boot, and then the PV DC modulation and consistent with the grid waveform, and then hang up.
Q:PV grid-connected inverter and independent inverter in the control of what is the difference
And you said that the independent inverter, said off-grid inverter it, this inverter can not access the mains, the components of the electricity through the off-grid inverter to the battery charge, the battery at night
Q:Photovoltaic grid-connected inverter without DC emc how will happen
by means of energy converters can be converted into electrical energy. The process of converting light energy directly into electrical energy is precisely the response to photovoltaic effects. Without the need for any other mechanical parts, the energy in
Q:After the PV inverter, how to achieve the same period before the network?
Solar panel simulator: with MPPT function, simulated morning, noon, afternoon, evening, rainy weather, solar panels produced under different conditions in different voltages.

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