The SPD-600 is evidently the one to use on the SMA TL inverters.
In older grounded PV systems, if the negative or positive is grounded
directly to ground, then you could get by without
an SPD connected to that grounded conductor because it is, well, already
grounded and that line will rise in
We have been using Midnite SPD's since they came out. The one suggestion
I have is the light is too intense. I have clients who have covered the
SPD's in tape to keep the light from attracting small flying insects to the
electronics area. Some places just have too many bugs :( The blue seems to
b
boB,
To add to Drake's wonderings, I've had a few SMA TL-40
inverters trip with an AFCI fault. Significant hassle to get onsite and
deal with it. Some with metal roofs some without, may have been
lightening in the area.
Bill
On 10/9/2018 2:02 PM, Drake wrote:
Hi boB,
I will
Hi boB,
I will keep putting an SPD on each string and on the AC line.
Sometimes my systems end up with a lot of blue lights hanging from a
wiring gutter!
Have you ever heard of any problems using the Midnite SPDs with Sunny
Boy TL series inverters? So far, I don't think I've had a problem,
For an inverter with two MPPT inputs, you will need to treat the
negatives and positive lines separate unless
the manufacturer says something else. That means one SPD per array
unfortunately. Negative and positive connect
to separate leads of the SPD and then ground in the middle. As both
I think something on the order of 90+% lightning strikes come from the
utility feed, not the dc side. That has to be ignored if in a high
strike area orgrid isolated.
On 10/8/2018 10:37 PM, Ray wrote:
I believe you can use the SPD 300 AC on 2 strings, if PV neg is
grounded. You would conne
I believe you can use the SPD 300 AC on 2 strings, if PV neg is
grounded. You would connect the green to ground (or PV neg) and then
connect the red to one string pos, and connect the black to the other
string pos. This would be limited to 300 v also. I haven't tried that
exact configuration
Hello Wrenches,
Do you use surge arrestors with multi MPPT input string inverters? Do
you put a separate arrestor on each MPPT input? I find it sort of
pricey using a Midnite Solar arrestor on each string, but have been
doing that. Is there a less expensive approach that is effective?
I beli
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