07-12-14 15:43 Mike Luther wrote to Tom Walker about UPS Clicking-Report   
      
    ML> @MSGID: <53C26201.13031.windowsa@capcity2.synchro.net>   
    ML> @REPLY: <53C1B239.13030.windowsa@capcity2.synchro.net>   
   Howdy! Mike,   
   -snip-   
    ML> I've used nothing but APC -> Smart <- UPS equipment for years   
    ML> and years now. The reason is that you need to very carefully   
      
   My first UPS was made by APC, the store I got it from only carried APC   
   USPs, so I looked on the internet to see some remarks about them before   
   I got mine because I never heard of the Company b4.   
      
   A few days later I returned it in exchange for another one like it.   
   The second one failed me too, so I looked on the stores web site and   
   saw they also sold Tripp-Lite UPSs and had one sent to the store for me   
   to pick up.   
      
   It was a 180Watt UPS and I used it for a long while b4 it started   
   failing, so I learned Tripp-Lite had a program for getting a new UPS at   
   a reduced price for Owners of Tripp-Lite UPSs who needed to replace   
   their Out Of Warranty unit.   
      
   Some time later the second 180W UPS needed replacing so I had my store   
   get a 300W Tripp-Lite UPS for me.   
      
   The 300W unit has a 'replaceable battery' where the 180W units didn't.   
      
   I haven't seen the Replace Battery LED on mine light up yet...   
      
   It still goes to battery back up power a few times a week, and last   
   week, when it switched over I saw the lights in my room blink.   
   So I feel it is protecting my gear, but when that LED comes on telling   
   me it needs a new battery I'll get one for it.   
      
   I have had good experience with Tripp-Lite products.   
   I got one of their Isobar Outlet Strips a long time ago after seeing a   
   mock up of one in a Clear Plastic Case where the parts could be seen.   
      
   Years later I purchased a 15Amp 12Volt Power Supply (ps) because a new   
   Radio I got for Two Meter Amateur Radio needed more Current than the   
   4Amp ps I used on my older Radio.   
      
   I wrote Tripp-Lite and asked them for a Schematic Drawing for their ps   
   and they sent it to me in the mail.   
      
   Probably I could find that Schematic on their web site now, but I only   
   had Text Email from Juno when I asked them for a Schematic and couldn't   
   have done that then.   
   -snip-   
    ML> my case my hand designed and personally built KW CW amps that   
    ML> helped me be the only person ever in the history of ham radio   
    ML> to apply for a 300 country original ARRL DXCC award only on 40   
      
   What Tubes did You used in the Finals on that KW RF Amp?   
      
    ML> The key is that when you are really 'protecting' any AC   
    ML> equipment like all this, think a bit.  Poof, power goes off!   
    ML> OK, your UPS has to generate and turn on AC power exactly at   
    ML> the same 60 or 50 hertz frequency that you normally use.  Plus   
    ML> do it fast enough so there is no interruption for the critical   
    ML> equipment and service it is protecting.  Slow forward now. OK,   
    ML> your normal power service comes back on.  But wait!  You   
    ML> ABSOLUTELY have to match the new 'normal' sine wave shape and   
    ML> frequency to your UPS service sine wave and frequency.  Or   
    ML> BOOOOOOM, the two electrical sources will fight with each other   
    ML> and even blow up something like your whole equipment.  And a   
    ML> simple RELAY can do this??  Not a chance.  Your UPS absolutley   
    ML> has to move the emergency service wave form to the EXACT timing   
    ML> and shape of the replacement standard power source!  That is   
    ML> exactly what a 'SMART' UPS does.  So you don't blow up this or   
    ML> that which is plugged into it.  This can get a lot bigger.   
      
   I worked at a woodworking shop in the 1960's and during the day shift   
   they burned Wood Dust and Chips in a Steam Boiler/Generator to supply   
   electricity to their building to run their machines on.   
      
   When day shift was about to end they transferred to City Power.   
      
   I've been in the Boiler Room and watched the operators switch over to   
   City Power, and they didn't use a Scope, they watched a Panel Meter to   
   see when everything was in 'Phase' and then changed to City Power and   
   shut down the Boiler before they left the building.   
      
   I was told when Louisville, Kentucky suffered the 1937 Flood that   
   company supplied A.C. Power to the South End of Louisville until the   
   local electric utility company got back on line.   
      
   I retired from a Lock and Dam and have used the Generators at both   
   sites.   
      
   At the Lock, when the Diesel Generator was being used, and the Lamp   
   on the Control Panel showed Line Power was restored AND the lamps for   
   the 440V 3 Phase Motors on the Hydraulic Pumps were off, I would swing   
   the A.C. Power Switch on the Panel from Generator Power to Line Power.   
      
   The Lights and Marine Radio and the 386 pc would come back on after I   
   had switch back to Line Power.   
      
   Probably the pc they use now would have to have the Power Button   
   pressed because it might not be on a UPS.   
      
   I don't know, maybe the powers that be have ordered UPS's for the pc's   
   where I retired from. ???   
      
   ... Psychoceramics: The study of crackpots.   
   --- MultiMail/MS-DOS v0.49   
   --- SBBSecho 2.12-Linux   
    * Origin: telnet & http://cco.ath.cx - Dial-Up: 502-875-8938 (1:2320/105.1)