Thanks, this is really informative. Does the size of the inverter need to have the capacity to handle both the essential and non essential loads or does the non-essential load draw its capacity from the grid? In other words, if I have 2 geysers, a toaster, microwave, oven, kettle etc, and I want them on at the same time when there is grid power, do I need an inverter which can handle the combined load from the non-essential and essential loads or does it need to cover and be sized for the essential load only. Thanks
@versofysolar8865
Жыл бұрын
This is a great question. The size of the inverter only needs to cover the pull of the non essential loads. The inverters that we install have the ability to back feed to the essential loads when there is grid available so you still get the benefit of solar on the geyser etc when there is grid. A good way to think of it is using water as an analogy. If the grid is the furthest upstream (the source), the non essential loads come next, followed by the inverter and the essential loads after the inverter. When grid is available, the solar can push excess power upstream to the nonessential loads. E.g. if your geysers come on when the sun is out and the grid is on, the system will supply the load using panels as a priority and then draw the balance from the grid as necessary. However, when the grid is not available, only items down stream of the inverter (essential loads) will get the benefit of the system (panels and/or batteries). I hope that answers your question? If not, reply to this comment and we can take a second stab at explaining 😀
@CarloBaptista
Жыл бұрын
@@versofysolar8865 Hi, thanks for your reply. Not sure I understand why the inverter should be sized for the non-essentials load, which runs off Eskom. I thought it should be sized for the essential load, or both. I get that the inverter can push excess power to the non-essential load, grid or both if the essential load has the power it needs as it's a bi-directional, hybrid inverter but I'm still confused regarding how the system should be sized in terms of capacity (5 or 8 kw inverter). Sorry....
@VliengWieng
10 ай бұрын
@@CarloBaptistabecause when the grid comes back online the inverter and the grid will not be in phase, with explosive results. So the inverter needs to stop supplying to the non essential side when the grid is offline. When the grid comes back the inverter needs to "listen" to the grid and slowly adjust its own frequency until they are synchronised.
@jonerasmus9399
Жыл бұрын
Good vid. Whats the main difference between a grid tied inverter and an off grid inverter. Seeing that we dont really export to the grid in South Africa. Why do people buy grid tied inverters when they dont feed back into the grid ?
@versofysolar8865
Жыл бұрын
Grid tied inverters are generally installed purely as a cost saving exercise, not as a load shedding solution (grid tied inverters don't work if there is no grid). Generally speaking (in a South African context), grid tied inverters are installed in a commercial or industrial landscape to subsidize a property's draw from the grid. Typical use cases would be factories or businesses that have a high load during the day, these loads then get offset by whatever the panels are producing at the time. These systems work well in an environment where the grid is always present. However, in the current South African landscape it makes little sense to install a grid tied inverter, particularly in a residential environment as it is not a load shedding solution. A hybrid system is a much better solution in a residential environment as it can operate independently of the grid. A hybrid system like the ones Versofy installs, come with batteries that store excess power to be used at night or during outages, therefore offering both a cost saving and a loadshedding solution.
@jonerasmus9399
Жыл бұрын
@@versofysolar8865 So how can one tell if youre looking at a hybrid type inverter or a grid tied inverter. They all look the same
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