Noblest wrenches,
I have come upon the need for 1, Mitsu PV-MF170EB3. I have a customer
here in snow country with a ground mount array. He says he shovels snow out
from the ground in front of the rows of PVs and for 4 years has not been a
problem until he noticed 2 of the PVs have the
HI All,
I've had to replace a DR with a TR.
I'm having issues with the internal battery charger timer.
I can't get any exact info on the amount of time this should run.
I'm pretty sure it based on battery amp hrs, but unclear if it also has a amp
part as well.
The issue is that it seems to st
Once I have seen a very thick piece of plate glass (1/4" as I recall) crack
in the cold when the snow had slid down it half way and stopped, leaving the
bottom half buried, the top half exposed to the sun and heat creating a very
large thermal difference. I haven't seen this happen on our tempered
perhaps it is voltage controlled. The voltage rises to end of bulk and then
current drops to prevent exceeding that voltage When you initiate a recharge
cycle it quickly raises to absorb and then goes to float. this sounds like
normal operation. Repeate the test when the battery is discharg
Hi All -
Have any of you heard of the Xslent XPX-A1000 microinverter?
http://www.xetenergy.com/#Tab-2_link-1
We're going up against them on a 10 kW system and I'm trying to figure out
if their claims about producing reactive power mean anything to us in the
real world. They are saying that their
Short answer: no, this product's reactive power generation will not
affect you in the real world.
Long answer:
I don't see how their 6kVA system could outperform your 10kW system
unless you're installing your system in the shade. This device seems to
be quite limited- max VOC 42VDC, max input
August,
It appears in reading the installation manual that with a power factor of .64, that 6 KW system can theoretically produce a dynamically adjustable combination of active and reactive power up to 9.37 KVA however the KW will remain the same at 6 KW. I sped read the manual so I may have mis
I can't understand how any inverter WOULDN'T deliver its power with the
voltage and current 100% IN PHASE.
When the voltage and current are not 100% in-phase that represents reactive
power. Reactive power flows positive for a quarter of the AC cycle, then
negative for a quarter of a cycle, then p
HI Peter,
I agree with you that for now on residential it makes no sense.
However for commercial that might have to pay extra for PF issues, to have the
inverter adjust for this makes sense.
Its the reason they( inverter companies ) are doing it.
On Jan 6, 2011, at 2:34 PM, Peter Parrish wrote:
HI Peter,
I agree with you that for now on residential it makes no sense.
However for commercial that might have to pay extra for PF issues, to have the
inverter adjust for this makes sense.
Its the reason they( inverter companies ) are doing it.
I"ve heard a better more complete reason of course
Jay and Peter,
Paying extra because of reactive power is not the reason for having this
feature presently. The charges for reactive power are insignificantly small
to the customer. The real reason for reactive support has to do with
utilities beginning to require it as a condition for interconnect
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