Re: [RE-wrenches] -48 Volts at the Phone Company
Keith, Another wrench commented about the Exeltech inverters being capable of working with a -48V battery system. His info was good. The DC input is "floating" on XP and MX inverters, and may be used in positive-ground telecom battery systems as well as negative ground systems .. such as off-grid, etc.. The MX 120V models are available up to 20 kW, 40 kW in 240V, and 60 kw in 208V three phase. The 120V models can grow incrementally in 1 kW steps; 240V in 2 kW steps; and the three-phase grows in 3 kW steps. You'll have to contact their sales department for more info. By the way .. my own jaded view of "kVA" ratings .. they're marketing hype to make an inverter look more capable on paper than it really is. Dan On Thu, 1/30/14, Keith Cronin wrote: Subject: [RE-wrenches] -48 Volts at the Phone Company To: "RE-Wrenches" Date: Thursday, January 30, 2014, 10:16 PM Hi folks Any inverters in the marketplace that will happily take -48 volts off the phone companies standard battery banks they use to backup their phone network for us? Client wants to drive a 15kva load and replace and existing conventional UPS system that was rated for 40kva. Thanks Keith Cronin ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
Re: [RE-wrenches] -48 Volts at the Phone Company
Hi Keith, I think Exeltech MX series inverters can be acquired in a - 48 VDC configuration, if they are still available, great inverters! One is powering my office right now, since 1999. Chris Worcester Solar Wind Works NABCEP Certified PV Installer Office 530-582-4503 Cell 530-448-9692 Fax 530-582-4603 www.solarwindworks.com ch...@solarwindworks.com From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Keith Cronin Sent: Thursday, January 30, 2014 8:16 PM To: RE-Wrenches Subject: [RE-wrenches] -48 Volts at the Phone Company Hi folks Any inverters in the marketplace that will happily take -48 volts off the phone companies standard battery banks they use to backup their phone network for us? Client wants to drive a 15kva load and replace and existing conventional UPS system that was rated for 40kva. Thanks Keith Cronin ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
[RE-wrenches] -48 Volts at the Phone Company
Hi folks Any inverters in the marketplace that will happily take -48 volts off the phone companies standard battery banks they use to backup their phone network for us? Client wants to drive a 15kva load and replace and existing conventional UPS system that was rated for 40kva. Thanks Keith Cronin___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
