PV Grid-Tied Inverter-Sunrous-Dual MPPT-US Maintenance-Free Operation

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1.Features of PV Grid-Tied Inverter-Sunrous-Dual MPPT-US Maintenance-Free Operation :

Maintenance-Free Operation 

Absorbent Glass Mat (AGM) technology ensures efficient gas recombination up to 99% and freedom from electrolyte maintenance. During the expected float service life of batteries, no need to check the specific gravity of the electrolyte or add water.

• Good Discharging Ability

Tight assembly technology ensures an excellent high-rate discharge performance.

Long Service Life                                                     

A unique corrosion-resistant grid alloy ensures batteries have long service life.

Low Self Discharge

Using high purity raw materials ensures batteries have less self-discharge.


2. PV Grid-Tied Inverter-Sunrous-Dual MPPT-US Maintenance-Free Operation Images


  1. 3. PV Grid-Tied Inverter-Sunrous-Dual MPPT-US Maintenance-Free Operation Specification



Max.DC Power


Max.DC Voltage


PV Voltage range, MPPT

60V ~ 360V

Max.input current


Number of MPP trackers


Max.number of strings (parallel)



Nominal AC power /


Max AC power

Max.output current


Nominal AC Voltage / range


AC grid frequency / range

47.5-51.5Hz / 59.3-60.5Hz

Power factor at rated power



< 3%

AC connection



Max. efficiency/Californian efficiency

> 98.0% / > 97.0%

MPP adaptation efficiency

> 99.0%

Protection devices

DC reverse polarity protection

AC short-circuit protection

Ground fault monitoring

Grid monitoring

Output Transient Voltage Suppression

Over load


General data

Dimensions (W/ H / D) in mm

370 / 540 / 185 mm



Operating temperature range

-25 ~ +60

Storage temperature range

-40 ~ +70

Ambient humidity

0 100%

Consumption (night)

< 0.5W


HF-transformer galvanic isolation

Cooling concept


Enclosure type

IP65 / NEMA 3R


DC connection: PV special connector

AC connection: connector

LCD display & Backlit

LED display

Interfaces: RS485

Warranty: 10 years

Certificates & approvals

G83 / G59 / TUV / SAA / ETL / JET/ CE


4. After-sales Services Undertakings 

1. During the equipment commissioning period, the company will send scheduler to commissioning to ensure debugging smoothly and a one-time test commissioning.

2. The company is responsible for professional users’ on-site operator training and technical exchange.

3. The long-term tracking service system: we practice lifelong quality of our product tracking service, and we also will take effective measures and solutions for the user of the technical issues and equipment problems.

4. Regularly listen to opinions and suggestions of users, to provide users with new trends in technological innovation, new product information and enhance mutual understanding.

5. Any problems, the company will provide solutions for users within 48 hours.

5. FAQ

  • Where can I buy your products?

You could find our products from dealers or contact our sales team directly. We will provide you with detailed services.

  • How to contact us?

Contact details can be found from website www.okorder.com to contact us. We look forward to providing you with professional services.

  • What is the application field of your products?

They can be used in the small photovoltaic (PV) grid power generation systems of family units as well as the commercial photovoltaic system such as BIPV, BAPV and etc.

  • What kinds of modules do your inventers support?

Our inventers support most of mainstream components and modules in the market. Should you require more details, please do not hesitate to contact our technical personnel.

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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.
Grid-connected inverter is generally used with large-scale photovoltaic power plant system, a lot of parallel PV string is connected to the same set of inverter DC input, the general power of the use of three-phase IGBT power module, power
Q:What is the difference between low voltage grid connection and medium voltage grid connection?
For photovoltaic power plants when the power system accidents or disturbances caused by photovoltaic power plant grid voltage drop, in a certain voltage drop range and time interval, the photovoltaic power plant can ensure that non-off-line continuous operation.
Q:Three-phase photovoltaic inverter grid, the use of phase-locked loop is what?
Photovoltaic inverters for grid-connected photovoltaic power generation systems are primarily capable of receiving DC power from photovoltaic arrays and converting them into sine-wave currents of the same frequency and in phase with the access grid for powering the grid or local loads.
Q:The working principle of photovoltaic grid - connected inverter
Inverter will be converted into alternating current DC, if the DC voltage is low, then through the AC transformer boost, that is, the standard AC voltage and frequency. For large-capacity inverter, because the DC bus voltage is high, AC output generally does not require transformer boost that can reach 220V, in the small and medium capacity of the inverter, because the DC voltage is low, such as 12V, 24V, It is necessary to design a boost circuit.
Q:How the output voltage of the PV inverter and the grid-connected voltage are determined
Inverter is the DC power (battery, battery) into alternating current (usually 220V, 50Hz sine wave). It consists of inverter bridge, control logic and filter circuit. Widely used in air conditioning, home theater, electric wheel, power tools, sewing machines, DVD, VCD, computer, TV, washing machine, range hood, refrigerator, video recorders, massage, fan, lighting and so on. In foreign countries
Q:What is the difference between a PV grid-connected inverter and an off-grid 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:The function of photovoltaic grid - connected inverter
After some additional voltage buffering, the left side of the bridge is usually 18 ~ 20khz switching frequency, the dc voltage is converted to ac voltage.
Q:Solar grid inverter does not merge into the grid, direct access to the load to the load power supply?
Inverter is the DC power (battery, battery) into alternating current (usually 220V, 50Hz sine wave). It consists of inverter bridge, control logic and filter circuit
Q:After the PV inverter, how to achieve the same period before the network?
It can automatically detect the generator and the grid frequency and voltage, in the frequency, voltage, phase are in line with the requirements of the grid to set the time before the release of the closing signal, so that it can be safely and securely connected.
Q:Photovoltaic grid-connected inverter problem
But Baidu Encyclopedia clearly pointed out: the zero line is the secondary side of the transformer leads the neutral point of the line, and the phase line constitutes a circuit for power supply equipment.

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