How to Connect a 200w SINGLE Solar Panel? / Caravan Electrical Installation 

—Review of 200 watt TEK Solar Panel

Panel Label Values ​​section

Review of TEK 200w solar panel label values ​​belonging to different companies

Panel Label Values ​​section includes label values ​​of 200w and 1 piece of 205w solar panels.

Also in this section, ‘’Voc’’ When the open circuit voltage drops below 25 C of the panel temperature, the ‘’Voc’’ value increases proportionally. Here, an average of 10% is taken.

Increased voltages calculated in 3 rows. These values ​​are not included in the panel label. They are values ​​found by calculation.

‘’Vmp’’ When the maximum power voltage increases above 25 C of the panel temperature, the ‘’Vmp’’ value decreases proportionally. Here, an average of 10% is taken.

Increased voltages calculated in rows. These values ​​are not included in the panel label. They are values ​​found by calculation.

Change rates are given depending on the temperature in panel catalogs. Calculations can be made according to the region values ​​using these values.

The effects of changes depending on the panel temperature are revealed in the columns (12-13-14 -15.)

–DETERMINING THE FUSE CURRENT BETWEEN THE CHARGE CONTROL DEVICE AND THE PANEL

The maximum current that the solar panel can produce is given in the column.

In the 1st row, 4th column, the 10.20A short circuit current is 10.20A due to the fact that it is a SINGLE panel.

In parallel connections, the short circuit current (Ioc) is the sum of the total. However, if there is a panel with different voltages, all panels act as the panel with the lowest voltage.

In series connected circuits, the single panel Isc is the short circuit current or if there is a panel with different Isc short circuit currents, all panels comply with the Isc current of the lowest panel.

–Determining the fuse between the SINGLE 200w Panel and the charge controller;

Total 10.20A current 1.25 = 12.75A above the norm value 16A DC fuse is determined.

The values ​​between the panel and the charge controller for 12v, 24v and 48v installations are the same for these 4 panels.

It is not possible for the highest value produced by the solar panel, the ‘’ Ioc ‘’ short circuit current, to blow this fuse.

The purpose of this fuse is to prevent dangers that may occur on the panel side from the high currents of the battery installation side.

In order to cut the connection between the solar panel and the charge controller, a 2-pole circuit breaker and fuse or a 2-pole fuse that can separate the circuit must be used.

Note: It is specifically stated that the positive and negative legs of solar panels that will not be used for a long time must be separated from the installation (2 poles).

–DETERMINING CHARGE CONTROLLER CURRENT FOR 12v BATTERY INSTALLATION IN 200w SINGLE SOLAR PANEL INSTALLATION

Columns 9-10 and 11

Column: In 12v installation installation; It determines how many ampere current the charge controller should have.

Since the average values ​​in this column are 16.67A, 20A charge controller is selected as the upper value.

What is important is that the power of the charge controller is above the panel power. (12v * 20A = 240watt etc.) (Charge controller nominal values ​​20A 12-24v 100v)

Determining fuse current: The value 1.25 above the current calculated as 16.66A between the battery and the charge controller is selected. The upper standard value 20A DC Fuse can be selected.

Note: Some charge controller manufacturers write that the device can be equal to the panel power or 5% higher than the panel. Catalog information should be checked on this subject

–DETERMINING CHARGE CONTROL DEVICE CURRENT FOR 24v BATTERY INSTALLATION IN 200w SINGLE SOLAR PANEL INSTALLATION

Columns 9-10 and 11

Due to the 18.54v value in the row 16 column, a 24v installation cannot be established with a parallel connection regardless of the number of 200w single panel or panels.

NOTE: In this installation, 15v for 12v, 30v for 24v, 60v for 48v are taken as basis.

14.4v for 12v, 28.8v for 24v, 57.6v for 48v battery charge cut-off voltages can be taken as basis.

16v for 12v, 32v for 24v, 64v for 48v can be taken as basis for comprehensiveness..

–DETERMINING CHARGE CONTROLLER CURRENT FOR 48v

9-10 and 11 Columns SINGLE PANEL

Due to the 18.54v value in the row 16 column, 48v installation cannot be established with a 200w single panel or parallel connection regardless of the number of panels.

Even if the Vmp voltage is suitable and 48v installation can be established, it would not be economical because a 50A 2400w charge controller can be used for 48v.

NOTE: In this installation, 15v for 12v, 30v for 24v, 60v for 48v are taken as basis.

14.4v for 12v, 28.8v for 24v, 57.6v for 48v can be taken as basis for battery charge cut-off voltages.

16v for 12v, 32v for 24v, 64v for 48v can be taken as basis for comprehensiveness

–DETERMINATION OF CHARGE CONTROL DEVICE INPUT VOLTAGE IN 200w SINGLE SOLAR PANEL INSTALLATION

SINGLE Panel 12 and 13. Columns.

In these columns, the values ​​of 10% voltage increase as a result of the decrease in panel temperature due to the ‘’Voc’’ Open circuit voltage and ambient temperature are included.

This voltage value is used to determine the charge controller input voltage.

The open circuit voltage Voc, which is 25.05v in row 2 column, increases to 27.56volts in parallel connected circuits with a 10% increase in row 12 column.

Since the open circuit voltage (Voc) is 27.56v in SINGLE Panel or Parallel connected circuits, the Device input voltage is determined as 1st row 13th column 48v or above 100v

–DETERMINING BATTERY SYSTEM VOLTAGE IN 200w SINGLE SOLAR PANEL INSTALLATION

Columns 14 and 15.

As a result of the increase in the column ambient temperature and the panel temperature, the maximum load voltage of ‘’Vmp’’ decreases. In this calculation, a 10% voltage decrease is taken into account.

These voltage values ​​are used to determine the battery system voltage to be charged, or to determine the panel maximum power voltage according to the battery system voltage.

The maximum load voltage of Vmp, which is 20.60v in the 1st row 5th column; becomes 18.54v in the 1st row 14th column in SINGLE panel or parallel connection circuits.

CONCLUSION: Since 18.54v is above 15v and below 30v, only 12v battery installation can be established. 24v and 48v installations cannot be established.

Battery charge cut-off voltage, 14.4v for 12v, 28.8v for 24v and 57.6v for 48v voltage values ​​are taken into account. (For some batteries, 14.2v and its multiples – for 14.6v, its multiples are taken.)

Instead of the battery charge cut-off voltage; it is important at what volts the charge controller is triggered. Some articles state that it is at 15v, some state that it is at 15.4-15.5v.

Although there is no clear data; When triggers are taken into account, the calculation should be made by taking the multiples of whichever number will be taken into account. (such as 15.30 and 60v…)

The maximum power voltage is very important in this respect. Instead of expressions such as 12v 24v panel, it is very important for the end consumer to have ‘’Vmp’’ information.

As a measurement, 14.4 battery charge cut-off voltage or one of the multiples of 15v to 15.5v can be taken into account or 16v multiples can be taken.

Technical Comment: IT WILL BE ACCURATE FOR THE VALUE OF THE MAXIMUM LOAD VOLTAGE, WHICH HAS DECREASED WITH THE TEMPERATURE, TO BE ABOVE THE 16V LEVEL AND ITS MULTIPLES.

Questions

Caravan Electrical Installation How to Connect 200w SINGLE Solar Panel?
Caravan electricity What should be the cable thickness of 200w single solar panel?
How to calculate the fuse for a single solar panel for caravan electricity 200w?
Fuse calculation between a single solar panel and a charge controller,
Fuse calculation between a battery and a charge controller,
What are the effects of high temperatures on solar panels?

Please take into account the product catalog link information. This information and plans can be used under the condition of engineering control. Otherwise, all responsibility belongs to the person using them.