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Posted

Hello.. I just had a 5kw deye system installed with 2 batteries no PV. When I lose Eskom..no issue battery kicks in almost immediately, however when Eskom resumes and the system needs to go back to grid, there is almost a minute or longer I have to wait until the power resumes. Is this normal? If not, how do I resolve this is it an invertor setting or wiring issue? 

Thanking you in advance 

Posted

Ouch.. I always thought that having an inverter system makes life very easy whereby you would not even know when Eskom drops and returns unless you have light indicators on your installation. 

Posted (edited)
54 minutes ago, Solarcrazy said:

Ouch.. I always thought that having an inverter system makes life very easy whereby you would not even know when Eskom drops and returns unless you have light indicators on your installation. 

On the Sunsynk you can set the grid reconnect time in the grid settings. Not sure about the Deye but it should be possible to reduce it from 60 seconds.

Edit* its worth noting that some places require this delay to prevent excessive strain on the grid from inverter/battery setups wanting to charge batteries back up after a grid outage. 

Considering its only 1 extra minute you spend on the battery after grid is restored it seems logical to just leave it at 60 second delay. You shouldn't notice this ? 

Edited by Nexuss
Posted

When we were simulating Eskom failure yesterday it was @7pm .. The entire power in the house was off and it was dark for that 1min. Typically load shedding can start at from 6pm to 8pm..by that time is already dark and peak family activity time.. So when Eskom kicks in, I'm in darkness FOR that 1 min period which is scary and not safe. 

Posted
13 minutes ago, Solarcrazy said:

When we were simulating Eskom failure yesterday it was @7pm .. The entire power in the house was off and it was dark for that 1min. Typically load shedding can start at from 6pm to 8pm..by that time is already dark and peak family activity time.. So when Eskom kicks in, I'm in darkness FOR that 1 min period which is scary and not safe. 

No, that is not normal. The 1 minute is usually to bring the inverter output in sync with the grid before joining, but you should still have power from the battery while that is happening.

Posted (edited)

Wait so when the grid goes down , the essentials (ups) side of the inverter switches off for a minute ? 

Edit*

I dont think we are on the same page . "So when Eskom kicks in, I'm in darkness FOR that 1 min period which is scary and not safe. " this makes no sense to me . Why would you be in darkness if you are on the battery ?

Edited by Nexuss
Posted (edited)

Are your loads correctly split between essential and non-essential?

Usually it should only be your non-essentials that go "dark"
Your essentials should not normally go off at all unless you have run out of battery power or incorrectly wired essential side...

Edited by WannabeSolarSparky
Posted
32 minutes ago, Nexuss said:

Wait so when the grid goes down , the essentials (ups) side of the inverter switches off for a minute ? 

Edit*

I dont think we are on the same page . "So when Eskom kicks in, I'm in darkness FOR that 1 min period which is scary and not safe. " this makes no sense to me . Why would you be in darkness if you are on the battery ?

That's what I also don't understand

Posted
12 minutes ago, WannabeSolarSparky said:

Are your loads correctly split between essential and non-essential?

Usually it should only be your non-essentials that go "dark"
Your essentials should not normally go off at all unless you have run out of battery power or incorrectly wired essential side...

The installer is coming back today to complete the COC etc.. Let me as him.. 

Posted

Do you know what parts of your house are supposed to be on the inverter ? and did you make this clear to the installer?  If the loads that are connected to the inverters essential side are dropping theres a problem ,but it sounds to me like most of your house is on the non essential side ? ie it gets no power when the grid is down.

Posted
11 hours ago, Solarcrazy said:

Hello.. I just had a 5kw deye system installed with 2 batteries no PV. When I lose Eskom..no issue battery kicks in almost immediately, however when Eskom resumes and the system needs to go back to grid, there is almost a minute or longer I have to wait until the power resumes. Is this normal? If not, how do I resolve this is it an invertor setting or wiring issue? 

Thanking you in advance 

How do you determine when grid is restored? And the quality of what is available.

I know that where I live, grid voltage is often very low after power is restored. 180V is not uncommon. My inverter will not reconnect at that voltage, but it will connect a little later as the voltage increases.

I can set it to just accept anything as long as it's 50Hz, but anecdotal evidence from my neighbours is that some appliances and electronic devices do not operate properly at the low voltage, so at this time I'm keeping it set on SA standard, which, I believe is 230V plus or minus 10%

Posted
4 minutes ago, Solarcrazy said:

Tested is again.. Entire house has no power when Eskom kicks back after I am on battery power.. 

So the entire house has power when grid is down? Then when grid returns the whole house's power goes off for 1 min ?

Posted
1 minute ago, Nexuss said:

So the entire house has power when grid is down? Then when grid returns the whole house's power goes off for 1 min ?

Essential loads have power when grid is down. When grid returns entire house essential and non essential has no power for that 1min 

Posted
9 minutes ago, Bobster said:

I know that where I live, grid voltage is often very low after power is restored. 180V is not uncommon. My inverter will not reconnect at that voltage, but it will connect a little later as the voltage increases.

I should add that the house keeps on running from battery until we reconnect. 

I have no experience with the Deye inverter, but it strikes me as very odd that a system that has been running on battery power will produce no output at all when grid is resumed. It should stay running on battery until it reconnects. Unless the batteries are exhausted. But you are reporting a 1 min period with no power EVERY TIME, so that's not the battery running out.

Posted

Thank you everyone for all your input.. The installer missed out a cable connection...its now resolved.. When Eskom resumes the essentials still run off battery whilst the 1min timer is counting down, once done the non essentials get power and there is no blackout period... 

Love this forum.. Appreciate all the assistance 🙏

  • 8 months later...
Posted

@Solarcrazy- I'm experiencing a similar issue to what you had.  When grid fails, the inverter carries the essential load with no problems.  However, when the grid restores, the inverter will drop the essential for about a minute and then restore.  This does not happen every time - probably 1 out of 10 times.   In your last message you refer to a "missed out cable connection" that your installer fixed.  What cable could this have been that has this kind of impact on the system?

  • 1 year later...

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