[WISPA] Low cost generator
http://www.electricgeneratorsdirect.com/catalog/product_info.php?products_id=538 I'm in the market for a generator and came across this one. The auto transfer switch and propane caught my eye and I figured I'd share it with the list. -- George Rogato Welcome to WISPA www.wispa.org http://signup.wispa.org/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Low cost generator
The Guardian comes as small as 7KW for about $2100 and goes up a long way from there. I have seen Guardians at cell sites and waste water lift stations around here. George Rogato wrote: http://www.electricgeneratorsdirect.com/catalog/product_info.php?products_id=538 I'm in the market for a generator and came across this one. The auto transfer switch and propane caught my eye and I figured I'd share it with the list. -- Scott Reed Owner NewWays Wireless Networking Network Design, Installation and Administration www.nwwnet.net -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Low cost generator
George - Call me - Soon Sir ! 337-764-5953 JohnnyO - Original Message - From: George Rogato [EMAIL PROTECTED] To: WISPA General List wireless@wispa.org Sent: Saturday, June 30, 2007 11:27 AM Subject: [WISPA] Low cost generator http://www.electricgeneratorsdirect.com/catalog/product_info.php?products_id=538 I'm in the market for a generator and came across this one. The auto transfer switch and propane caught my eye and I figured I'd share it with the list. -- George Rogato Welcome to WISPA www.wispa.org http://signup.wispa.org/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
RE: [WISPA] Low cost generator
I have one at my house and have two at one of the data centers. Works great. Im close to putting a couple more on rooftops. -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Low cost generator
Brad, You can adjust the sensitivity of the APC UPS's to handle just about any type of incoming power. We have run a tower off a cheap Home Depot 2000watt by adjusting the APC so it would not keep switching off an on. Travis Microserv Brad Belton wrote: We have found many (most all?) 10kW "job site" type generators do not work well if at all with APC UPS. In the event of a power failure we simply rent a 25kW towable diesel generator. Granted 25kW is way overkill for most any HUB site, but apparently the larger generators provide "cleaner" power that the APC UPS's are happy with. Does anyone have one of these 7kW Guardian standby generators in use with APC UPS's? $1999.00 delivered with transfer switch is a pretty strong deal! Best, Brad -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Scott Reed Sent: Saturday, June 30, 2007 11:30 AM To: WISPA General List Subject: Re: [WISPA] Low cost generator The Guardian comes as small as 7KW for about $2100 and goes up a long way from there. I have seen Guardians at cell sites and waste water lift stations around here. George Rogato wrote: http://www.electricgeneratorsdirect.com/catalog/product_info.php?products_id =538 I'm in the market for a generator and came across this one. The auto transfer switch and propane caught my eye and I figured I'd share it with the list. -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Low cost generator
You can change this all via the APC management software. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com - Original Message - From: Eric Muehleisen [EMAIL PROTECTED] To: WISPA General List wireless@wispa.org Sent: Saturday, June 30, 2007 12:23 PM Subject: Re: [WISPA] Low cost generator Travis, How do you go about tweaking a UPS? We use APC 750's at most small tower sites. During the event of a power outage we use 1000watt generators but as you said...the UPS just shuts off and on, repeatedly. -Eric Travis Johnson wrote: Brad, You can adjust the sensitivity of the APC UPS's to handle just about any type of incoming power. We have run a tower off a cheap Home Depot 2000watt by adjusting the APC so it would not keep switching off an on. Travis Microserv Brad Belton wrote: We have found many (most all?) 10kW job site type generators do not work well if at all with APC UPS. In the event of a power failure we simply rent a 25kW towable diesel generator. Granted 25kW is way overkill for most any HUB site, but apparently the larger generators provide cleaner power that the APC UPS's are happy with. Does anyone have one of these 7kW Guardian standby generators in use with APC UPS's? $1999.00 delivered with transfer switch is a pretty strong deal! Best, Brad -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Scott Reed Sent: Saturday, June 30, 2007 11:30 AM To: WISPA General List Subject: Re: [WISPA] Low cost generator The Guardian comes as small as 7KW for about $2100 and goes up a long way from there. I have seen Guardians at cell sites and waste water lift stations around here. George Rogato wrote: http://www.electricgeneratorsdirect.com/catalog/product_info.php?products_id =538 I'm in the market for a generator and came across this one. The auto transfer switch and propane caught my eye and I figured I'd share it with the list. -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Low cost generator
It should work, But In our particular case the question was what is the automatic transfer time between the UPS inline with the backup generator? what is the switch over time??? And at what voltage threshold does it switch. IEEE 1159 and the CBEMA curve typically recommend to start looking at 65% to 60% of nominal voltage when switching to backup. The weblink your provided on page 18-23 discusses this point (see the operators manual) But they don't specify the automatic transfers cycle time. We typically called APS, or Exide and also generator manufacturer to ask for what is called relay coordinaton settings. Felix --- George Rogato [EMAIL PROTECTED] wrote: I was hoping to use my apc ups's inline with the back up generator. Any reason why this won't work? Felix A. Lopez wrote: George/Mike: I worked for 6 years in deep UPS and power quality at PGE in Silicon Valley including IEEE1159 and CBEMA curve. Our field work demonstrated that if an automatic transfer does not take place at one quarter of a cycle in a 60 cycle per second AC power supply, then the sensitive logic controllers of any network equipment, PLCs, etc will detect the automatic transfer as a possible zero voltage condition. The weblink provided below did not specify the automatic transfer switch cycle time (see pages 18 to pages 23). A true UPS with continuous power will actually provide your utility power source through a battery system including power conditioning along with generator backup. I had the opportunity to work with the FAA in Fremont, California which has true UPS it was quite a setup. So you may want to ask at what level you of continuity you need for your wireless network. I know of a few subject matter experts in the industry should you need a consultant. Felix Energy and Wireless practioneer Silicon Valley Area --- Mike Hammett [EMAIL PROTECTED] wrote: You can change this all via the APC management software. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com - Original Message - From: Eric Muehleisen [EMAIL PROTECTED] To: WISPA General List wireless@wispa.org Sent: Saturday, June 30, 2007 12:23 PM Subject: Re: [WISPA] Low cost generator Travis, How do you go about tweaking a UPS? We use APC 750's at most small tower sites. During the event of a power outage we use 1000watt generators but as you said...the UPS just shuts off and on, repeatedly. -Eric Travis Johnson wrote: Brad, You can adjust the sensitivity of the APC UPS's to handle just about any type of incoming power. We have run a tower off a cheap Home Depot 2000watt by adjusting the APC so it would not keep switching off an on. Travis Microserv Brad Belton wrote: We have found many (most all?) 10kW job site type generators do not work well if at all with APC UPS. In the event of a power failure we simply rent a 25kW towable diesel generator. Granted 25kW is way overkill for most any HUB site, but apparently the larger generators provide cleaner power that the APC UPS's are happy with. Does anyone have one of these 7kW Guardian standby generators in use with APC UPS's? $1999.00 delivered with transfer switch is a pretty strong deal! Best, Brad -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Scott Reed Sent: Saturday, June 30, 2007 11:30 AM To: WISPA General List Subject: Re: [WISPA] Low cost generator The Guardian comes as small as 7KW for about $2100 and goes up a long way from there. I have seen Guardians at cell sites and waste water lift stations around here. George Rogato wrote: http://www.electricgeneratorsdirect.com/catalog/product_info.php?products_id =538 I'm in the market for a generator and came across this one. The auto transfer switch and propane caught my eye and I figured I'd share it with the list. -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ Take the Internet to Go: Yahoo!Go puts the Internet in your pocket: mail, news, photos more. http://mobile.yahoo.com/go?refer=1GNXIC -- George Rogato Welcome to WISPA www.wispa.org http://signup.wispa.org/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
