What are the specifications forsolar panels ?

Although mostly in the matter of calculation Installing solar panels is primarily a technician's responsibility. But knowing and understanding the various specs of solar panels is basic. It may help you choose to buy solar cells and be able to talk with technicians to understand each other more. Because if you use the wrong values, the design of the solar cell system may be completely wrong. So don't wait. Let's get to know the various specs behind the solar panels!

Specs behind solar panels that you should know.

1. Model name, panel type, production date : This is the easiest information to notice. On the nameplate attached to the panel, the Model No. or model name will be specified. including the name of the brand and what type of solar panel it is, such as a monocrystalline panel. Polycrystalline panels, etc., which you can check to see if they match what you want.

2. Rated Maximum Power (Pmax) : is the maximum power output of the solar panel. It shows the light intensity value per square meter. and temperature in degrees Celsius This is another data used to compare the performance of panels of the same type to see how they differ.

3. Maximum Power Point Voltage (Vmp) : is the voltage produced by the solar panel when the solar panel works best. Simply put, it is the time when the solar panel works in full sunlight. It is similar to Imp because it is the value that we use during normal times. Normally, the Vmp value is related to Imp and Pmax because the Vmp value x Imp value is equal to the Pmax value at that sunlight and temperature condition.

4. Current at Pmax (Imp) : is the current produced by the solar panel when the solar panel is operating at its best. which the value specified in the nameplate will be the value tested per square meter. and temperature in degrees Celsius

5. Open-Circuit Voltage (Voc) : is the voltage value measured from the anode. and negative of the solar panel while the electrical load is not connected. As the name suggests, it is the voltage value when the circuit is open. That means every time the first sunlight shines on the panel This value will occur. This value is very important to use in system design. If we do not allow for this value and we use the Vmp value in the calculation alone, it may damage the equipment in our solar cell system.

6. Short Circuit Current (Isc) : is the value obtained from measuring the positive current. and remove of solar panels Used to test the quality of the panel. which is a value that has a small chance of occurring Because it happens when there is a shock in the system. The manufacturer will design the power rating of various devices to be able to support the maximum current when a shock occurs.

7. Output Tolerance : is displayed as a range of numbers. which solar panels are of good quality The discrepancy will only be on the positive side.

8. Module Efficiency (PV) : has units of percentage (%) derived from calculations comparing light intensity values that are set as standards. Compared to the maximum electrical wattage and the area of the solar panel, the higher the PV value, the better.

9. Max System Voltage : is the maximum voltage that the panel can accept. This means that we should not connect the series to produce this value. In most cases, small systems usually have no problems because the number of panels is not large. But there will be problems with large systems such as installing solar cells on factory roofs. This value is mostly determined by the inverter. or pump control cabinet

10. Max Fuse Rating : is the maximum current value of the fuse. which will cut off when a short circuit occurs. Simply put, this is the maximum size of the fuse that is allowed to be used. It says that in each string What size fuse should we install?

11. Size of the solar panel : Height x width x thickness will be specified in millimeters. The weight of the panels is measured in kilograms. Which should be chosen to be suitable for use, such as if taking it camping. May choose a small panel. and is lightweight etc.

In addition to the various specification values, there are standard certification symbols that are certifications from various institutions, whether it be production standards. Performance inspection standards including safety standards Consisting of ISO 9001/14001 standards, CE, TUV, IEC, Safety Class standards, including Power Performance Warranty that will tell you the warranty on the power output. This is a guarantee of the quality of the panels after 25 years of use, which must be more than 80%. This means that if the panels are used correctly, The panels can supply more than 80% of their power in the 25th year. And this is the basic way to look at solar panels that we should know.

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