Hi all, after my installer tested the EPS function and showed me how to do it (plus documented the process), I have been testing it once a quarter to ensure it works, just incase I ever need it and if there is an issue I can claim on the warranty.
There have been a few people saying some of there RCD’s trip in there main CU, when they have tested it. Does this happen to you?
Plus do you know how to isolate the grid to test it?
Have you ever tested the Gateway Isolating switch? (Incase there is an issue with the GW)
I strongly advise testing it on a regular basis.
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I’ve not tested it as I don’t have a utility isolating switch & wasn’t aware that there was another way of doing it.
T you know how to test without a mains isolating switch, I’d love to know.
It did fail to switch when we had 2 short power cuts just after the system went but GE responded quickly and sent a software update.
As an aside, I’m a retired electrical/electronics engineer with a lot if time spent spent reviewing equipment maintenance.
Testing the auto back up function isn’t something that needs doing that often, I’d suggest 6 monthly max, annually is better and I suspect (I’d need more details of the spec of the components) that every 2 yrs is perfectly adequate.
Remember, all physical circuitry components like breakers, RCDs etc have a life expectancy of ‘x’ number of operations, often quite low numbers if they are intended for emergency use rather that in a high power control circuit (where they’d operate dozens of times an hour or day).
So the fewer times you use them, the longer they’ll last.
Have you asked GE how often they recommend?
Regards
Dave F
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Thank you that’s very good advise, I will ask GE and reduce my testing.
Hi Paul @TheDragon_Giv does your team have any thoughts on testing the GW EPS function from time to time?
I have a number of ways to simulate a grid failure.
- Isolator just after the meter.
- Fuse installed by my installer
- Isolator installed by my installer, I think this was a requirement for the certification.
Yes this forms part of testing in the lab for all firmware updates
Also flip the grid with reserve set below and above current SOC. Simulating using reserve function.
Wouldnt release FW where EPS did not function in normal conditions
Tested again today my own, with a new string inverter to be release end of the year. Worked flawless
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