[RE-wrenches] SI5048 Commissioning Test

[Philip Boutelle]

Carl,
If you envision a time when the gen could be on simultaneously with the SB,
ie grid down & low SOC & high load, test those conditions. Depending on the
generator brand and firmware, and also on the SI firmware, this test often
gave the generator fits.
-Phil Boutelle

On Monday, October 22, 2012, Carl Adams wrote:

> Hello Wrenches,
>
> We have commissioned a new SI system (240V single phase residential) and
> want to ensure testing is adequate to ensure the system will perform as
> desired.
>
> The system consists of two SI5048s, 5kW PV array, SB5000US, battery bank,
> transfer switch, backup generator, and supplemental digital relay to
> activate DigIn signal on Grid DOWN condition.
>
> I am sure there are many test scenarios to run through to qualify the
> system.  Here is one.
> Test Case 1
>
>    1. Verify SOC is 95%+
>    2. Modify GnSocTm1Str and GnSocTm1Stp to artificially high numbers
>    (85% and  90% respectively)
>    3. Power off SB5000US to eliminate charging from solar
>    4. Simulate Grid Outage
>    5. Verify Transfer switch moves to generator input position
>    6. Verify DigIn signal to SI5048 reflects grid state (grid is down)
>    7. Monitor SOC and verify that when SOC reaches GnSocTm1Str (85%) the
>    SI starts the generator
>    8. Monitor SOC and verify that when SOC reaches GnSocTm1Stp (95%) the
>    SI stops the generator
>    9. Power ON the SB5000US
>    10. Reset GnSocTm1Str and GnSocTm1Stp to system specific values.
>    11. End Test
>
> Another test would be to bring the grid back up after step 7 or after step
> 8 and verify correct behavior.
>
> I would love to hear from those who have commissioned similar SI
> configurations, about other scenarios we should be testing to adequately
> qualify the system.
>
> Carl Adams
> SunRock Solar
> NABCEP Certified PV Installer
>
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