Solar Panel Controllers for Sale - Solar Modules Poly-Crystalline 250W 156*156 Module
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Solar Module Descriptions:
Solar Power Modules (known as Photovoltaics - PV) can generate electricity for your home or business, either as part of a stand-alone solar power system, or for buildings already connected to the local electricity network.
PV systems use the most abundant energy source on the planet, solar radiation, to generate electricity. They are silent, consume no fuel and generate no pollution. They also contribute to the reduction of greenhouse gas emissions; a 2kW PV system on a house will prevent the emission of about 40 tonnes of CO2 during its projected 30 year lifetime. Furthermore, the use of PV will reduce your electricity bills and exposure to fluctuating and steadily rising electricity prices.
Electrical Characteristics
Max-power (W) | 245 |
Max-Power Voltage (V) | 30.40 |
Max-Power Current (A) | 8.06 |
Open-Circuit Voltage (V) | 37.50 |
Short-Circuit Current (A) | 8.66 |
Mechanical Characteristics
Cable type, Diameter and Length | 4mm2, TUV certified, 1000mm |
Type of Connector | Compatible with MC4 plug |
Arrangement of cells | 6*10 |
Cell Size | 156*156 |
Dimension | 1580*1069*45 |
Weight | 19.5Kg |
Glass, Type and Thickness | High Transmission, Low Iron, Tempered Glass 3.2mm |
Features
Guaranteed positive tolerance 0/+5w ensures power output reliability
Strong aluminum frames module can bear snow loads up to 5400Pa and wind loads up to 2400Pa.
Excellent performance under low light environments (mornings evenings and cloudy days)
12 years for product defects in materials and workmanship and 25 years for 80% of warranted minimum power.
Certifications and standards: IEC 61215.
Manufactured according to International Quality and Environment Management System (ISO9001, ISO14100).
FAQ
Q: What kind of loads can I run on PV?
With a correctly designed PV system you can power almost any electrical load. However, as the load size increases the expense also increases. Loads like hot water heaters, air conditioners, room heaters and electric stoves should be avoided. The added cost of trying to power loads like these is very cost prohibitive. If these loads have to be powered it will be a lot less expensive to change the appliance to use an alternative fuel type like propane.
Q: When do I need a charge controller and why?
The safest way to figure out if you need a charge controller is to take Battery Amp Hour Capacity and divide this by the Solar Panel max. power amp rating. If the quotient is above 200, you don't need a controller. If the number is less than 200 than you need a controller.
For example if you have a 100 amp hour battery and a 10 watt panel, you take 100 and divide it by .6 (600mA) and you get 166.6. Since this is less than 200 you need a charge controller. If you have a five-watt panel in the above example you take 100 divided by .3 (300mA) and you come up with 333.3. Since this is larger than 200 you do not need a charge controller. However you still need a blocking diode, to prevent the battery from discharging to the panel at night. So as a general rule of thumb you don't need a charge controller unless you have more than five watts of solar for every 100-amp hours of battery capacity.
Q: What is PV & how does it work?
PV stands for photovoltaic. Photo = Light and Voltaic = Electricity. A solar cell converts light to electricity.
A solar cell is made of silicon. Computer chips are made of this same material. Basically, when light strikes the surface of a solar cell some of it is absorbed into the silicon. This light energy bumps the electrons loose and causes energy to flow.
By packaging approximately 36 solar cells together a solar panel or a solar module is created. When you have more then one solar panels you create a solar array.
- Q: Can a solar controller be used with solar panel grounding systems?
- Yes, a solar controller can be used with solar panel grounding systems. A solar controller is responsible for regulating the power output from the solar panels to the connected batteries or grid, and it does not interfere with the grounding system. Grounding is an essential safety measure in solar installations to protect against electrical faults and lightning strikes. Therefore, using a solar controller does not affect the functionality or effectiveness of the grounding system.
- Q: Which is more efficient: PWM solar controller or MPPT solar controller?
- The MPPT (Maximum Power Point Tracking) solar controller is more efficient compared to the PWM (Pulse Width Modulation) solar controller. MPPT controllers are designed to optimize the solar panel's output by constantly tracking and adjusting the operating point to maximize power production. This results in higher efficiency and better utilization of the available solar energy. In contrast, PWM controllers regulate the charging process by switching the solar panel output on and off, which can lead to some energy loss and reduced efficiency.
- Q: Can a solar controller be used with solar-powered remote weather stations?
- Yes, a solar controller can be used with solar-powered remote weather stations. A solar controller is essential in regulating and optimizing the charging of batteries connected to solar panels. It helps manage the flow of energy from the solar panels to the batteries, ensuring efficient charging and preventing overcharging or damage to the batteries. This is particularly important for remote weather stations that rely on solar power, as it helps maintain a consistent and reliable power supply for continuous operation.
- Q: Can a solar controller be used with multiple batteries in parallel?
- Yes, a solar controller can be used with multiple batteries in parallel. The solar controller regulates the charging of the batteries and ensures that they are charged safely and efficiently. When multiple batteries are connected in parallel, the solar controller distributes the charging current evenly among them, ensuring that each battery receives the appropriate charge. This allows for increased capacity and storage capabilities, making it beneficial for solar power systems that require more energy storage.
- Q: What is the maximum charging voltage a solar controller can provide?
- The maximum charging voltage that a solar controller can provide typically depends on the specific model and manufacturer. However, in general, most solar controllers are designed to regulate the charging voltage between 13.8 to 14.8 volts for a 12-volt battery system, and 27.6 to 29.6 volts for a 24-volt battery system.
- Q: How does a solar controller protect the battery from overcharging?
- The battery is protected from overcharging by a solar controller, which monitors the battery's voltage level and adjusts the charging current accordingly. When the battery reaches a specific voltage threshold, indicating full charge, the solar controller reduces or completely stops the charging current to prevent overcharging. This stage is commonly referred to as "float" or "trickle" charging. By controlling the charging process, the solar controller guarantees that the battery remains at a safe and optimal charging level, prolonging its lifespan and preventing damage caused by overcharging. Additionally, advanced solar controllers may include features such as temperature compensation and equalization charging to further safeguard the battery against overcharging and ensure its long-term performance.
- Q: What are the advantages of using a PWM solar controller?
- The advantages of using a PWM solar controller include better battery charging efficiency, increased battery lifespan, and improved system reliability. PWM controllers regulate the charging current to the battery, ensuring a more efficient charging process by reducing energy losses. This leads to faster and more effective battery charging, maximizing the solar system's overall performance. Additionally, PWM controllers help prevent overcharging and excessive discharge, extending the battery's lifespan. With their simple design and lower cost compared to other options, PWM solar controllers provide a reliable and cost-effective solution for solar power systems.
- Q: Does a solar controller have a built-in light sensor?
- Yes, a solar controller typically has a built-in light sensor. This sensor helps to detect the level of sunlight and adjust the charging or discharging of the battery accordingly.
- Q: What is the role of a solar controller in preventing battery thermal runaway?
- The prevention of battery thermal runaway relies heavily on the crucial role of a solar controller. Commonly referred to as a charge controller, this device is responsible for overseeing the flow of charge in and out of batteries within a solar power system. Its primary duty is to maintain the batteries at an optimal charge level, safeguarding them against both overcharging and excessive discharging, which can potentially lead to thermal runaway. Thermal runaway occurs when a battery becomes excessively heated, causing an abrupt rise in temperature that could result in an explosion or fire. Several factors may contribute to this, including overcharging, excessively high discharge rates, or extreme ambient temperatures. In order to prevent battery thermal runaway, a solar controller utilizes various mechanisms. One of its key functions involves the continuous monitoring of battery voltage and temperature. By consistently measuring these parameters, the controller can adjust the flow of charge to ensure that the battery remains within a safe operating range. For instance, if the temperature surpasses a certain threshold, the controller can decrease the charging rate or halt it entirely until the temperature returns to a safe level. Moreover, a solar controller incorporates additional safety features, such as temperature sensors and thermal shutdown mechanisms. These sensors are designed to detect abnormal temperature increases and promptly initiate a shutdown of the charging process to prevent further overheating. Furthermore, the controller may also be equipped with an alarm system or communication capabilities to alert users or system operators of any potential issues. Furthermore, advanced solar controllers may employ sophisticated algorithms and intelligent charging profiles to optimize the charging process and minimize the risk of thermal runaway. These algorithms take into account various factors, such as battery chemistry, capacity, and ambient conditions, in order to deliver the most efficient and safe charging strategy. In conclusion, the role of a solar controller in preventing battery thermal runaway encompasses the regulation of charging and discharging, continuous monitoring of battery voltage and temperature, implementation of safety features, and utilization of intelligent algorithms. By performing these functions, the solar controller ensures the longevity and safety of batteries within a solar power system.
- Q: Is a solar controller necessary for all solar panel installations?
- No, a solar controller is not necessary for all solar panel installations. It primarily depends on the type of solar panels being used and the specific application. Solar controllers are typically used in situations where there is a need to regulate and optimize the charging of batteries, prevent overcharging, and protect the panels from damage. If the solar panels are directly connected to the grid or used in small-scale applications without batteries, a solar controller may not be required.
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Solar Panel Controllers for Sale - Solar Modules Poly-Crystalline 250W 156*156 Module
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