[RE-wrenches] Xantrex XW 6048A unregulated during charging

[Kevin Pegg]

This is a good one. What battery capacity have you programmed into the XW system? We have had a few issues, though not this one specifically, but similar head-scratchers that were resolved by setting the battery capacity to 0 Ah. 

Have you tried swapping AC1 and AC2 and does the problem follow the source or the input? 

I recently had an odd issue with generator automation on AC1 on an XW+ and Schneider tech support was helpful in replicating the issue in their lab and issuing a fix. Might be worth engaging them if you haven't already. 

Kevin

-----Original Message-----
From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Jason Lerner
Sent: May-03-17 3:18 PM
To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
Subject: [RE-wrenches] Xantrex XW 6048A unregulated during charging

Hello All,

I’m working on a system with 3 Xantrex XW 6048’s that has grid on AC1 and a 20 kw generator on AC2.  When charging from grid it regulates during an absorption charge at 58.2 where it should.  When charging from AC 2 - generator, the battery Voltage rises above 62 VDC,  but not every single time.  All the settings are correct, EQ is turned off, and if it accidentally got turned on is set at the same Voltage as the absorption setting.  Customer has a brand new 33 kWh AGM battery bank,  that I would rather not fry.  This is a battery backup system with no PV.

I have checked all the temperature sensors (they seem good) and tried charging with them plugged in,  and with them unplugged and it doesn’t seem to change the situation. 

Has anybody else seen this happen before?  Any suggestions?

Thanks very much,

Jason Lerner
Waldron Power and Light Co.
(888) 927-2526

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