Tutorials for Solar PV and Power Back-up Systems RSS

Beginner level, DC, Fuse, How to connect, Medium level, Safety, Sizing -

What is a Fuse?A fuse is an electrical safety device. It protects an electrical circuit against high currents. The fuse is placed in the supply cable to an electrical device. As soon as current flows through the fuse that is higher than its current rating, for a certain amount of time, the fuse will blow. Once the fuse has blown, no more current will flow into the circuit.Higher than expected current situations can occur when an electrical device develops a fault...

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Batteries, Lithium -

A Lithium battery is often the most expensive element in a solar installation, and as a battery is a long term investment, it is important to take into account all aspects of a battery before buying. There are a number of parameters that are important to consider when buying batteries, for example:   Voltage and capacity charge / discharge rate (C-rate) Depth of Discharge (DoD%) Life span, warranty and (local) back-up support Expandability Mounting other Voltage and Capacity The Voltage of a...

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Beginner level, Inverters, Medium level, Sizing, Victron -

There are plenty of options available when it comes to selecting an inverter. Inverters vary in size, efficiency, performance, and capabilities. So what’s the best solution for you? The key questions you have to answer are the following:   Do you have a single phase or three-phase electricity supply? Do you want back-up power from a battery? What is the size of your solar panel array? How much power are your appliances using?   What is an inverter? An inverter...

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Advanced level, Batteries, DC, Lithium, Medium level -

(Read more about Lithium batteries here)   People often claim that Lithium batteries are expensive, and although initial costs are higher, Lithium batteries are cheaper over a longer period. In this article, we will try and compare batteries that use Lithium Iron Phosphate (LiFePO4) chemistry with Lead-Acid batteries, in terms of capacity, longevity and price over an extended period of time. We will conclude that LiFePO4 batteries are about 40% cheaper in the long run, next to having a range of other benefits. We will...

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Beginner level, Sizing -

With the ongoing load shedding, the energy price increases, the dropping costs for solar components and the need to do something about climate change, more and more homeowners in South Africa are looking to go solar. Here are the key steps to take to install the best PV system for your home:                                                         ...

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