Antique Engines and Old Iron

[Home] - [HELP] - [Forums] - [Groups] - [Classified Ads] - [Subscribe] - [Books] - [Sponsors] -

Go Back   SmokStak > SmokStak® Vintage Electrical Equipment > Solar and Wind Power for Home, Farm & Industry
Forgot Password? Join Us!

Notices

Solar and Wind Power for Home, Farm & Industry Windmills, solar panels and inverters for standby power.

Solar and Wind Power for Home, Farm & Industry

Inverter Troubles


this thread has 25 replies and has been viewed 9755 times

Reply
 
Thread Tools Display Modes
  #21  
Old 12-22-2014, 04:18:33 AM
Power Power is online now
Registered
 
Join Date: Aug 2011
Location: New Jersey
Posts: 5,525
Thanks: 1,281
Thanked 3,392 Times in 1,976 Posts
Default Re: Inverter Troubles

Since the batteries are in the UPS case, in operation the terminals are not accessible. Some brands do NOT isolate the batteries from AC when the ups is charging them!!!!!!!!!!!!!!!!!!!!
If you extent the leads to an external battery on one of those, then the external battery terminals will be hot when you plug in the UPS to recharge the batteries.

Check yours out to make sure battery terminals do not have line voltage when recharging.
Reply With Quote
Sponsored Links
  #22  
Old 12-26-2014, 10:06:16 AM
Bassplayer1985 Bassplayer1985 is offline
Subscriber
 
Join Date: Sep 2011
Location: Oakville, Connecticut
Posts: 1,516
Thanks: 194
Thanked 413 Times in 336 Posts
Default Re: Inverter Troubles

Quote:
Originally Posted by Power View Post
Some brands do NOT isolate the batteries from AC when the ups is charging them!!!!!!!!!!!!!!!!!!!!
This is what's referred to as a live neutral configuration where the batteries would be energized at one half the line voltage commonly found on MSW and square waves. With true sine inverters you don't have this configuration.By design sine inverters have the DC isolated from the AC side, and the negative battery terminal is the ground lug. UPS's normally have an H-bridge architecture that serve dual purposes to save on component costs. It charges the battery when not on inverter power, and the current flow reverses to become the boost stage by switching a relay to feed the inverter. Pretty nifty device that has multiple uses across the electronic device landscape these days.
Reply With Quote
  #23  
Old 03-10-2015, 01:37:14 PM
stretch67 stretch67 is offline
Registered
 
Join Date: May 2009
Location: Goderich Ontario Canada
Posts: 273
Thanks: 58
Thanked 83 Times in 44 Posts
Default Re: Inverter Troubles

There is a great you tube video on how to take a APC smart UPS that is rated at 1500 VA and upgrade it to out put 1200 watt continuous.
Guy solders in a extra FET. Does some changes to the firmware, and installs a bigger fan. Runs it off his 24 volt battery bank.

I'm sure if you search you tube you could find it.
Reply With Quote
  #24  
Old 03-12-2015, 09:04:55 AM
Bassplayer1985 Bassplayer1985 is offline
Subscriber
 
Join Date: Sep 2011
Location: Oakville, Connecticut
Posts: 1,516
Thanks: 194
Thanked 413 Times in 336 Posts
Default Re: Inverter Troubles

Quote:
Originally Posted by stretch67 View Post
There is a great you tube video on how to take a APC smart UPS that is rated at 1500 VA and upgrade it to out put 1200 watt continuous. Guy solders in a extra FET. Does some changes to the firmware, and installs a bigger fan. Runs it off his 24 volt battery bank.I'm sure if you search you tube you could find it.
That would be knurlgnar24, great guy, communicated with him in the past. Very knowledgeable of inverters.
Reply With Quote
  #25  
Old 03-12-2015, 10:57:45 AM
stretch67 stretch67 is offline
Registered
 
Join Date: May 2009
Location: Goderich Ontario Canada
Posts: 273
Thanks: 58
Thanked 83 Times in 44 Posts
Default Re: Inverter Troubles

Yes that is his name. Has a good bunch of videos on inverters.

I have a Smart UPS that is 1500 VA and may try the mods that he did.
Just need to find the time eh.

Any of the Chinese inverters are Junk.

Want a good square wave unit go for the Xantrex DR series.
Have had 2 of the 24/24 units on the farm (off grid)17 years and worked them hard.
Never had to service them yet.

Weld with them, run air compressor, milling machines, lathe.
Reply With Quote
  #26  
Old 09-25-2015, 04:49:37 PM
armandh armandh is offline
Sponsor
 
Join Date: Aug 2006
Location: Suburban St. Louis, Missouri
Posts: 3,117
Thanks: 303
Thanked 872 Times in 657 Posts
Default Re: Inverter Troubles

the best choice of an inverter would be from a double conversion [always on] UPS
these are designed for 24/7 operation but usually need 24 or 48 volts.
at some point they parallel the battery and mains derived DC supplies
there is no switch over process. usually good sine wave too.
Reply With Quote
Reply

Bookmarks


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

F o r u m Jump

Similar Threads Chosen at Random
Thread Thread Starter F o r u m Replies Last Post
Onan Inverter converter Flash41 Onan Generators 0 08-25-2013 11:39:58 PM
GE rotary inverter Tim B Generators & Electric Motors General Discussion 8 04-26-2013 08:22:40 PM
8KW Inverter rrfxxxr Generators & Electric Motors General Discussion 7 09-19-2008 10:32:08 AM
Generac 941 Inverter Lupatrian Generac Generators (SEARS, etc.) 1 07-26-2008 12:34:44 PM
electric inverter Paul Van Sickle Generators & Electric Motors General Discussion 7 03-24-2002 04:44:11 PM


Use "Ctrl" mouse wheel to change screen size.
All times are GMT -4. The time now is 01:13:57 PM.

Smokstak and Enginads site search!


All use is subject to our TERMS OF SERVICE
SMOKSTAK® is a Registered Trade Mark - A Community of Antique Engine Enthusiasts
Copyright © 2000 - 2019 by Harry Matthews P.O. Box 5612 - Sarasota, FL 34277