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:After the PV inverter, how to achieve the same period before the network?
Grid simulator: analog power grid, normal and abnormal conditions, overvoltage, undervoltage, over frequency, under frequency, sudden power failure, etc.
Q:Installation and maintenance of photovoltaic grid - connected inverter
Before the installation should first check whether the inverter in the transport process for damage. When selecting the installation site, there should be no interference with any other power electronic equipment in the surrounding area.
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 grid inverter is a current source, the output voltage is basically the grid voltage, may be slightly raised.
Q:Solar grid inverter does not merge into the grid, direct access to the load to the load power supply?
In foreign countries due to the higher penetration rate of the car to go out to work or travel can be connected with the inverter battery drive electrical and various tools work.
Q:How the output voltage of the PV inverter and the grid-connected voltage are determined
supply through the cable to the battery. The use of household appliances connected to the power converter output can be used in the car a variety of electrical appliances. The available electrical appliances are: mobile phones, laptops, digital cameras, cameras, lights, electric razors, CD players, game consoles, handheld computers, power tools, car refrigerators and various tourism, camping, medical emergency appliances Wait.
Q:PV grid-connected inverter and independent inverter in the control of what is the difference
The independent inverter in the output voltage phase amplitude of the frequency control is initially set good. Independent inverter, you should refer to off-grid inverter, do not need to consider the grid situation.
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:Is the PV inverter a current source or a voltage source?
Photovoltaic inverter, also known as power regulator, according to the inverter in the use of photovoltaic power generation system can be divided into two kinds of independent power supply and grid.
Q:What is the difference between a PV grid-connected inverter and an off-grid inverter?
Grid-connected inverter will be directly sent to the power grid, so to track the frequency of the grid, phase, the equivalent of a current source. Of course, there are some inverters called low-voltage crossing ability, you can do PQ adjustment
Q:Generally a large grid-connected photovoltaic power plant will have several inverters
, This method is simple to design, easy maintenance, but also for the power grid harmonics smaller, good power quality!

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