Re: [RE-wrenches] Magnum Inverters - Digital Clocks Losing Time?
Thanks for the feedback and pointers, its greatly appreciated – I checked frequency and it was spot on at 60Hz but with minimal decimal places on my meter. This must be something new with Magnum as I haven’t seen the voltage issues on other systems nor have I had any issues with appliances or clocks etc. I hate to admit that I seem to find myself in constant frustration for one reason or another with the primary suppliers of offgrid system components! From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Allan Sindelar Sent: Monday, April 1, 2019 10:58 AM To: RE-wrenches Subject: Re: [RE-wrenches] Magnum Inverters - Digital Clocks Losing Time? Rich, this is a known flaw in the Magnum AE and PAE series. I have one longtime client for whom I supplied a 4448AE around 2009 who later told me that had he known of this frequency issue he wouldn’t have selected Magnum. Allan Sindelar On Apr 1, 2019, at 6:56 AM, Christopher Warfel wrote: I would think it has to be frequency. What else could shift the time? Up until about 2 years ago we were a grid isolated system and no one could use a plug in the wall clock. It takes just a very little off 60 Hz for a clock to keep incorrect time. Being off .5 Hz will result in 42,300 cycles in one day. When I worked in power plants the frequency was a digital display to the 6th place I think. The operator said if that decimal place was off by more than 2 from ISONE, it would trip off line. The steam turbines would be destroyed otherwise. Chris On 4/1/2019 7:08 AM, Rich Nicol wrote: Hello Wrenches I have a site with two PAE 48v Magnum inverters stacked. System voltage fluctuates ~ +/- 4 volts ranging from 243 to 247. Evenly split on the two lines. Site has a few electrical peculiarities I haven’t seen on the many other sites I have with Magnum inverters. Among those is three digital clocks on appliances that lose ~ 5 min per day consistently. A forth clock which is on a weather station with a transformer where it plugs into a receptacle keeps time and of course the computers do as they are web connected. I checked all neutral connections and verified proper N-G bond. All connections appropriately torqued. My recollection is the modest voltage swings are within Magnum spec. But its constantly moving about which seems somewhat suspect to me. Any suggestions? Thanks RIch ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Magnum Inverters - Digital Clocks Losing Time?
Hi Rich, This appears to be a newer thing with magnum. I’ve seen this and it’s been commented previously here on the wrenches. Doesn’t appear to be load or charge related. It’s definitely not on the older models. Magnum says that this voltage fluctuation is normal operation. Jay Peltz power. > On Apr 1, 2019, at 4:08 AM, Rich Nicol wrote: > > Hello Wrenches > I have a site with two PAE 48v Magnum inverters stacked. System voltage > fluctuates ~ +/- 4 volts ranging from 243 to 247. Evenly split on the two > lines. > Site has a few electrical peculiarities I haven’t seen on the many other > sites I have with Magnum inverters. Among those is three digital clocks on > appliances that lose ~ 5 min per day consistently. A forth clock which is on > a weather station with a transformer where it plugs into a receptacle keeps > time and of course the computers do as they are web connected. > I checked all neutral connections and verified proper N-G bond. > All connections appropriately torqued. > My recollection is the modest voltage swings are within Magnum spec. But its > constantly moving about which seems somewhat suspect to me. > Any suggestions? > Thanks > RIch > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Magnum Inverters - Digital Clocks Losing Time?
Rich, this is a known flaw in the Magnum AE and PAE series. I have one longtime client for whom I supplied a 4448AE around 2009 who later told me that had he known of this frequency issue he wouldn’t have selected Magnum. Allan Sindelar > On Apr 1, 2019, at 6:56 AM, Christopher Warfel > wrote: > > I would think it has to be frequency. What else could shift the time? Up > until about 2 years ago we were a grid isolated system and no one could use a > plug in the wall clock. It takes just a very little off 60 Hz for a clock to > keep incorrect time. Being off .5 Hz will result in 42,300 cycles in one day. > When I worked in power plants the frequency was a digital display to the 6th > place I think. The operator said if that decimal place was off by more than 2 > from ISONE, it would trip off line. The steam turbines would be destroyed > otherwise. Chris > >> On 4/1/2019 7:08 AM, Rich Nicol wrote: >> Hello Wrenches >> I have a site with two PAE 48v Magnum inverters stacked. System voltage >> fluctuates ~ +/- 4 volts ranging from 243 to 247. Evenly split on the two >> lines. >> Site has a few electrical peculiarities I haven’t seen on the many other >> sites I have with Magnum inverters. Among those is three digital clocks on >> appliances that lose ~ 5 min per day consistently. A forth clock which is on >> a weather station with a transformer where it plugs into a receptacle keeps >> time and of course the computers do as they are web connected. >> I checked all neutral connections and verified proper N-G bond. >> All connections appropriately torqued. >> My recollection is the modest voltage swings are within Magnum spec. But its >> constantly moving about which seems somewhat suspect to me. >> Any suggestions? >> Thanks >> RIch >> >> >> ___ >> List sponsored by Redwood Alliance >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> > ___ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] Magnum Inverters - Digital Clocks Losing Time?
I would think it has to be frequency. What else could shift the time? Up until about 2 years ago we were a grid isolated system and no one could use a plug in the wall clock. It takes just a very little off 60 Hz for a clock to keep incorrect time. Being off .5 Hz will result in 42,300 cycles in one day. When I worked in power plants the frequency was a digital display to the 6th place I think. The operator said if that decimal place was off by more than 2 from ISONE, it would trip off line. The steam turbines would be destroyed otherwise. Chris On 4/1/2019 7:08 AM, Rich Nicol wrote: Hello Wrenches I have a site with two PAE 48v Magnum inverters stacked. System voltage fluctuates ~ +/- 4 volts ranging from 243 to 247. Evenly split on the two lines. Site has a few electrical peculiarities I haven’t seen on the many other sites I have with Magnum inverters. Among those is three digital clocks on appliances that lose ~ 5 min per day consistently. A forth clock which is on a weather station with a transformer where it plugs into a receptacle keeps time and of course the computers do as they are web connected. I checked all neutral connections and verified proper N-G bond. All connections appropriately torqued. My recollection is the modest voltage swings are within Magnum spec. But its constantly moving about which seems somewhat suspect to me. Any suggestions? Thanks RIch ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
[RE-wrenches] Magnum Inverters - Digital Clocks Losing Time?
Hello Wrenches I have a site with two PAE 48v Magnum inverters stacked. System voltage fluctuates ~ +/- 4 volts ranging from 243 to 247. Evenly split on the two lines. Site has a few electrical peculiarities I haven’t seen on the many other sites I have with Magnum inverters. Among those is three digital clocks on appliances that lose ~ 5 min per day consistently. A forth clock which is on a weather station with a transformer where it plugs into a receptacle keeps time and of course the computers do as they are web connected. I checked all neutral connections and verified proper N-G bond. All connections appropriately torqued. My recollection is the modest voltage swings are within Magnum spec. But its constantly moving about which seems somewhat suspect to me. Any suggestions? Thanks RIch ___ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
