Re: [RE-wrenches] Specific AC Coupling question

2016-04-07 Thread Mac Lewis
Hi Allen, Another thing that you may want to talk with Schnieder about is if the "max sell" about applies if there is AC coupling is involved. I believe that the max sell amps is talking about how much the XW+ can pull off the DC buss, not necessarily how much will flow to the main service throug

Re: [RE-wrenches] Specific AC Coupling question

2016-04-05 Thread Jeremy Rodriguez
Have installed a 5548 and 6048 XW with IG Plus 10.0 with fair results. On/Off when AC coupled during the test phase. I have not heard any complaints from the homeowner. Jeremy Rodriguez Solar Installation And Design Expert All Solar, Inc. 1463 M St Penrose Colorado 81240 Sent by Jeremy's iPhone

Re: [RE-wrenches] Specific AC Coupling question

2016-04-05 Thread Drake
The frequency shift will only taper charge using all SMA equipment and an RS-485 Data Module and data cables. With all other brands of grid tie inverters, the Sunny Island will trigger and on / off charge scenario. At 12:09 AM 4/5/2016, you wrote: Hi Allen, I would recommend a contactor to d

Re: [RE-wrenches] Specific AC Coupling question

2016-04-04 Thread Mac Lewis
Hi Allen, I would recommend a contactor to disconnect to Fronius at high SOC (or voltage). It's pretty inexpensive to do it and most of the battery based manufacturers recommend it. I may be misunderstanding Jay, but I believe that the frequency shift in this case would create an on/off type of

Re: [RE-wrenches] Specific AC Coupling question

2016-04-04 Thread Ray Walters
Also worth looking at Magnum's new AC diversion load system. It does the frequency shifting but also 4 kw dump load that can be set up to any AC electric load. R.Ray Walters CTO, Solarray, Inc Nabcep Certified PV Installer, Licensed Master Electrician Solar Design Engineer 303 505-8760 On 4/4

Re: [RE-wrenches] Specific AC Coupling question

2016-04-04 Thread jay
HI Allan, The only reason to frequency shift is for “softer” charging. VRLA are not as sensitive to the pulse type charging that a relay type charging would do. And regardless if you have frequency shift or not, you will still need ( especially with VRLA) a high voltage relay. I recommend a SS

Re: [RE-wrenches] Specific AC Coupling question

2016-04-04 Thread drake . chamberlin
Hi Allen I haven't tried this with Schneider, but we do have one system that frequency shifts a Fronius IG Plus 10.0 from a pair of Sunny Islands. Maybe a different degree of shifting is present. SMA tech support felt confident. Drake > Wrenches, > Core question first: Will a ~2010 Fro

Re: [RE-wrenches] Specific AC Coupling question

2016-04-04 Thread Jerry Shafer
Wrenches I have only been able to get the IG, the sma 1800 and 2500 to either run or go off line not slow down like the SMA Island does, we did instead use a 600 volt contactor to turn off on of the strings instead, this was an ok work around. The pv shed seemed better then freq shut downs all the

[RE-wrenches] Specific AC Coupling question

2016-04-04 Thread Allan Sindelar
Wrenches, Core question first: Will a ~2010 Fronius IG-4000 respond properly to the frequency shift regulation supplied by a new Schneider XW+5548 or XW+6848? Situation: I haven't seen the Colorado site; I'm working as a consultant to produce an upgrade component