There are 8 tips to consider when selecting the proper off grid solar inverter, let us see as following.
1. The off grid solar inverter output voltage and frequency. This will base on your load requirements and usually its same as your country standard supply voltage/frequency.
2. Installing off grid solar inverter or hybrid inverter. Most of off grid solar inverters and hybrid solar inverters have AC backup supply connection, so the inverter bypass to use it for feeding your loads in case of sun absence and batteries discharged. Moreover, you can use this AC backup supply to charge the batteries through internal solar inverter batteries charger.
In order to install photovoltaic solar system in your building, you need to choose in between 2 main solar system types: On Grid and Off Grid. Which one will be the most technically suitable and cost effective as well? As an one-top online shop, inverter.com provides full range of solar inverter products to customers worldwide. On grid inverters, off grid inverters, micro inverters could be found in our shop.
Grid tie system is a solar system incorporates solar panels, grid tie solar inverter and other components to convert sun light into usable AC electricity while your house/premises remain hooked up to the electric utility, consequently your house still be fed with electricity even after the sun light disappears at the night (from the electric utility), and at the day time, the solar system will take the responsibility!
In order to buy the correct pump, you need to know what flow rate and total head you will need.
Generally speaking, when the pump output pressure increases, the pump head increases, and when the pump output flow increases, the head will decrease. That is why some few pumps manufacturers use the pressure term instead of head to characterize the pump specs, but the head is still more useful and clearer term to assist you in the pump job evaluation.
In a certain application, if you need to pump a liquid for 40 ft, this means that you need to select a centrifugal pump with at least 40ft total head plus the friction losses, so it is better to select a bit little higher head to substitute for the friction to get required flow.
Pump head will not be affected by pumped liquid type as long as the liquid viscosity is low like water, so the head achieved by the pump will be almost the same.
If the solar system is confirmed to be expanded in the future, micro inverters are a good choice. It is easy to continue adding a new unit to the micro inverters. The cost of adding another complete unit to a standard inverter is higher. When the panel faces multiple directions or there is a shading problem, choosing a micro inverter is definitely a value-added product.
The more the sun shines, the more DC electricity the solar panels can produce, and the more AC energy we can get. When the AC power is larger than our loads requirements, the excess electricity will send back to the electric power grid allowing other neighbors customers to use this clean solar energy. But if the AC power generated from the solar grid tie system is less than our loads requirements, then our loads will pull extra power required to run properly from the electric power grid. The 2 cases will be done automatically via the brain of the solar system which is the inverter, without any other interventions.
In string solar inverter, there will be a number of solar panels connected to each other in series, usually a number 6-10 solar panel, and generating what we called string. This string positive and negative terminals “DC” will be connected to the string inverter input side. As the panels will be connected in series, the overall string DC voltage will be high (typically 200-850V) and the circulating current will be low (equal to one solar panel rated current).