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NRS/SANS UPS Wiring


PaBz0r
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So I have been wondering about what it means using a non NRS approved inverter vs an approved NRS inverter for Backup/UPS.

Do you have to have a manual change over to be able to power the loads or can it still be "connected" to the grid and do pass through? For example using an Axpert only for UPS not an embedded SSEG. What does this mean for charging from the Grid if the case is you can't use it as pass through?

 

 

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On 2020/02/11 at 2:34 PM, PaBz0r said:

So I have been wondering about what it means using a non NRS approved inverter vs an approved NRS inverter for Backup/UPS.

NRS097 is for embedded generators, and their interface with the grid. The generator is the PV module. No PV modules... no need to comply with NRS097. You must still comply with SANS 10142-2-1 though, and that in turn might refer to other standards (eg SANS 60947) that require certain things for transfer switches, so there is a minimum standard for what constitutes a good UPS.

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11 hours ago, plonkster said:

NRS097 is for embedded generators, and their interface with the grid. The generator is the PV module. No PV modules... no need to comply with NRS097. You must still comply with SANS 10142-2-1 though, and that in turn might refer to other standards (eg SANS 60947) that require certain things for transfer switches, so there is a minimum standard for what constitutes a good UPS.

I read this part:

 image.thumb.png.59ab862d2ae050fec2eed5bc4d4391ae.png

It made me wonder..

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2 hours ago, PaBz0r said:

I read this part:

So a Victron inverter (for example) that does not have the ESS assistant installed, would fall outside this possibility, and therefore need not comply. There would be no reason to run ESS on a UPS (unless you're in the UK and grid storage makes financial sense in your area 🙂 ).

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