outback and error events [RE-wrenches]

[Keith Cronin]

Hello folks

 

We installed a 5.2kW PV system with 2-3048's and 8-8D's on a home, grid
tied, last year. This is fed into their main 100 amp house panel. They have
gas for all of their appliances and they are net energy exporters (hoorah!)

 

At 8:30 last night, I got the call the system was down. They couldn't
understand what was happening, but I reminded them of the bypass, so they
could isolate the situation and go to bed. (and continue the party).

 

Well, this mornings' summary with the client on the phone, left a few areas
in question. It turns out, they had a small gathering, and it seems one of
the guests, turned on a switch, that went to a future wire outside for
landscape lighting, that was not "safed" off, or a gecko ran across it and
that was the start of the situation.

 

It tripped a single, 20 amp breaker, which sent the system into a tailspin.
Inverter #1 popped up on the mate as "inverter #1 shorted", and "battery
voltage high". They system was oscillating and the lights were going on and
off every 10 seconds or so, then every 1-2 seconds.

 

Why the high battery voltage? The shorted error message makes sense..

 

Could I get some feedback on this scenario, and ways to prevent this from
happening, from a design standpoint as well as a troubleshooting guide for
clients?

 

Thanks

 

 

Keith Cronin 
President 
Island Energy Solutions Inc 
270 Kuulei Rd Suite 106 
Kailua, HI 96734 
Electrical Lic C-25221 
808-262-3268 Tel 
808-263-0338 Fax 
kcronin at islandenergy.net 
www.islandenergy.net 


  

 


[Non-text portions of this message have been removed]


- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://lists.topica.com/lists/RE-wrenches/read

List rules & how to change your email address: www.mrsharkey.com/wrenches/etiquette.php

Check out participant bios: www.mrsharkey.com/wrenches/

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com
--^----------------------------------------------------------------
This email was sent to: michael.welch at homepower.com

EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9.bWljaGFl
Or send an email to: re-wrenches-unsubscribe at topica.com

For Topica's complete suite of email marketing solutions visit:
http://www.topica.com/?p=TEXFOOTER
--^----------------------------------------------------------------