You're right Mick, It is an XW 6048, there's only one and I really think I'm
going to find that the biggest problem is that there is not enough inverter
capacity capacity with just one unit (the scematic shows a 60 amp breaker on
the output). The system is new ( installed within the last 4 months and the
batteries were new) The AC unit is 240 volt.....
Max Balchowsky
SEE Systems
mick abraham <[EMAIL PROTECTED]> wrote:
Max wrote about the "problem child" system which is "tripping off when the
AC unit tries to start".
Mick says: you didn't mention what brand of inverter is on board the system,
but in any case there's probably an error code that you can find to explain the
shutdown. The error could be due to the low voltage disconnnect point being
reached on the battery, or it could be due to excessive AC amperage demand from
the air conditioner...the latter case seems quite likely because of the 3.5 ton
thing, but even if you address that part of the problem there still may be
nuisance shutdown problems if there are battery health issues going on.
You mentioned MPPT60-150 as the charge controller. From that, I assume Xantrex
XW...and one might assume the inverter is from that same product line. They
build two 48 volt units...I'll bet if there's an XW inverter in the system that
it's probably model 6048...6 kW continuous with a 12 kW surge. Please confirm.
I have a client who tried running (two different) 5 ton air conditioners using
XW 6048 based gear. He didn't even try with a "single" but he found that
inverter doubles succeeded with one of his refrigerated air systems and not
with the other one. The difference was due to a different SEER rating. He added
a third inverter/charger and now has plenty of cranking power for either air
conditioner.
My big concern now is the grinding effect that such an intense load has on his
battery bank, but I digress...if there's XW gear involved in your "problem
child" system, throw another inverter at the load but watch the battery for
signs of puckering.
If you do stack a second XW machine, there is some setup involved in naming the
two units and in setting one up as the slave.
Mick Abraham, Proprietor
www.abrahamsolar.com
Voice: 970-731-4675
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