Re: [RE-wrenches] Specific AC Coupling question

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

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

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

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

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

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