ON-GRID PV - Combiner Box Maintain Easily, and Improve Reliability

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Product Description:

EAPVCB-08/16/18S    

 

To reduce the connection cables between the PV modules and solar inverters, to maintain easily, and improve reliability, in the large-scale photovoltaic power plants of on grid system, it’s necessary to use DC combining device between PV modules and solar inverters. EAPVCB Series PV array combiner box is specifically designed for high performance and high reliability, working with the PV inverter products from East Power to form complete photovoltaic system solutions. With PV array combiner box, and based on the PV inverter input voltage range, users can use certain numbers of PV panels with same specification in serially to form a PV module and connect several PV modules into the combiner box, and going through the SPD and breaker to output, which makes it easier to connect with inverter and also reduced the system installation time. 


● Water protection level is IP65 for outdoor installation 
● Wide range of DC input voltage (Max input open voltage can be up to 1000V)
● Dedicated photovoltaic fuses are used in each input,can bear DC1000V,fuse current can be selected
● Each input fuse is with a fuse holder, easy to replace and repair.
● Special high-voltage PV SPD is used,both positive and negative circuit can be protected
● Golden Sun and CE certifications

 

 

Model

EAPVCB8S

EAPVCB16S

EAPVCB-18S

Max PV array voltage

1000V

1000V

1000V

Max input ways

8

16

18

Fuse rated current

Depending on

customer's requirement

Output terminal

PG29

Protection level

IP65

Environment temperature

-25℃~+60℃

Humidity

0~99%

W×H×D

700×575×230mm

Weight

26Kg

30Kg

30Kg

Standard configuration

DC output breaker

Yes

Yes

Yes

PV-specific lightning protection module

Yes

Yes

Yes

Anti-reverse diode module

No

No

No

Diffuser

No

No

No

Fan

No

No

No

 

 

 

·         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:In a photovoltaic grid-connected project, the role of the inverter is to convert the voltage into AC 220V or 380V for the grid, since the transformer will raise the voltage again
Part of the distributed grid-connected projects, the basic are "spontaneous use, the power of the Internet," these do not need to boost, because the extra power is actually consumed by the surrounding electricity users, do not boost to a Level power grid;
Q:What is the difference between a grid-connected inverter and an off-grid inverter? What are the advantages of a hybrid inverter?
Offline generally need energy storage, not to send energy to the Internet. Grid has no right to interfere.
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: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:PV grid-connected inverter can directly load it?
Grid-connected inverter is usually equipped with island protection function, can only receive the power grid, if the load directly, the output is disconnected.
Q:Photovoltaic grid-connected inverter problem
The first zero line is the AC output. Any AC output of the inverter will have zero line, whether it is isolated or non-isolated. Isolation is the safety of high voltage inverters and regulators. 50KW above the inverter almost with the transformer.
Q:What is the difference between a PV inverter and a solar inverter?
Instability, the wind speed and the equipment itself will directly affect the generator rotation, so the voltage and current fluctuations, frequency instability, in short, is the power quality is poor) Therefore, through the inverter after the first rectification inverter to improve the quality of power
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:The function of photovoltaic grid - connected inverter
By dc / dc conversion to increase or decrease the input voltage, adjust its output to achieve maximum efficiency.
Q:Is the grid side of the grid and the inverter?
Grid-type system power transmission sequence: photovoltaic panels> relays> inverters> relays> electricity load + power grid (both in parallel).

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