[RE-wrenches] Solaredge inverters w/ backup generator

[Jerry Shafer]

I have done systems in Hawaii, here is one with a 30 k PV system and with a
250k Cummins back up genny. We have a contactor in the ATS that will open
if the genny is operating, this in turn sends a door open signal to the
Satcon shutting it down I don't want anything effecting the genset
operation so with the open created in the ATS it tricks the inverter to
shut off safely. We as a policy will not run a genset and PV unless as a AC
coupling system and you have some active over voltage like freq and voltage
triggers.
Jerry
On Feb 8, 2014 7:31 AM, "Kirk Herander" <kirk at vtsolar.com> wrote:

> Hello,
>
>
>
> I recently posed the question to Solaredge tech support, wondering if
> their inverter, in this case a 20kw 480 3-phase, would have any issues if
> it were connected to an AC panel backed up by a generator. They told me no
> problem, for the inverter's anti-islanding will work if it sees the
> "generator frequency" and therefore will not try to push PV power to the
> panel. But isn't 60 hz, 60hz regardless of origin? There's got to be more
> to it than that. I question this because I asked the same to SMA several
> years ago and they were hard-set against connecting Sunnyboys to a panel
> with generator backup, so I always would establish the point of
> interconnection upstream of the generator feed. Comments? Thanks.
>
>
>
> Kirk Herander
>
> VT Solar, LLC
>
> dba Vermont Solar Engineering
>
> NABCEPTM Certified Inaugural Certificant
>
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>
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