Re: [RE-wrenches] Wire management devices

2014-10-12 Thread William Miller
Friends: I looked at the Solarmount web site and I don't think the product complies-- the wire management leaves leads exposed. It's a nice start, however. I was asked by Homepower to do an article on wire management. I was flattered they'd ask, but I had to decline because there is so few opti

Re: [RE-wrenches] Wire management devices

2014-10-12 Thread Dave Click
I think that someone on this list recommended Solar Scrim a while back to make the conductors no longer readily accessible after they're supported; two options, depending on how picky the QA inspector is. http://www.solarscrim.com/ DKC On 2014/10/12 10:55, Christopher Warfel wrote: I looked

Re: [RE-wrenches] Wire management devices

2014-10-12 Thread Solar
Have you looked in to racking made by US Solarmounts in WI? http://www.ussolarmounts.us Their ground mounts are pretty nice and offer actual conductor protection. I've never used them, but I've seen them at the MREA in WI. Nice product. Jesse RE-Power LLC Sent from my iPhone > On Oct 12,

Re: [RE-wrenches] Quantifying power quality

2014-10-12 Thread Ray Walters
Hi Dan; I, like Larry, must be amazingly lucky then, because we've solved power quality issues for many years with 50mf caps. Usually, its been front loading washers not running on Trace SW inverters, but also Grundfos CP pumps, too. Never had a problem, and some of these have been running

Re: [RE-wrenches] Quantifying power quality

2014-10-12 Thread William Miller
Friends: The system is off grid with: 3 SI6048s in 3 phase 2 SB5000s 1SB4000 1 Generac 40kw generator A Savant home automation system with Furman 1500 UPS. Yes, when the SIs are running into the Furman we have cascading UPSs, but when the generator is powering loads it transfers straight throug

Re: [RE-wrenches] Quantifying power quality

2014-10-12 Thread Exeltech
Wrenches, Be careful about connecting *any* capacitors across an inverter's AC output. It's not a smart thing to do. While a capacitor may help in some cases when a load has a substantially poor power factor due to significant inductance, there are two serious concerns here: 1. The power fac

Re: [RE-wrenches] Quantifying power quality

2014-10-12 Thread Starlight Solar Power Systems
Hi William, If you recall a couple years ago we had some discussion here about a problem with a specific make appliance being powered by a Magnum inverter. The problem, it was discovered, was the appliance input PF was creating current demands that the transformer based inverter could not keep

Re: [RE-wrenches] Quantifying power quality

2014-10-12 Thread Chris Mason
A Sunny Island that switches to and from grid power probably does not transfer smoothly enough to protect sensitive equipment, but if it is online all the time, using solar to charge the batteries, I would not bother with a UPS. On Sun, Oct 12, 2014 at 11:27 AM, wrote: > perhaps i am not underst

Re: [RE-wrenches] Quantifying power quality

2014-10-12 Thread Marco Mangelsdorf
Can you get the specs on the UPS, as far as tolerances and ranges? Maybe check with the manufacturer of the UPS as far as being able to reprogram the bugger to be, shall we say, less sensitive. I know that there's a lot that can be done as far as being able to reprogram inverter parameters. (Boy

Re: [RE-wrenches] Quantifying power quality

2014-10-12 Thread toddcory
perhaps i am not understanding the set-up, but why feed a ups with a ups? doesnt the sunny island already provide ups capabilities for the loads connected to it? todd On Sunday, October 12, 2014 7:40am, "Tump" said: Thats the best fix I've heard yet! Document then DUMP IT! With the p

Re: [RE-wrenches] Quantifying power quality

2014-10-12 Thread Chris Mason
If the SI system has enough reserve, run it totally off-grid with the grid as backup. Then they will never see any transitions. On Sun, Oct 12, 2014 at 10:40 AM, Tump wrote: > Thats the best fix I've heard yet! > Document then DUMP IT! With the power logger you would also be able to > capture th

[RE-wrenches] Wire management devices

2014-10-12 Thread Christopher Warfel
I looked through the archives and saw that this was a topic a few years back. I am looking for ground mounted wire management equipment that actually does something other than just support conductors. I know several quality assurance program inspectors want to see ground mounted conductors i

Re: [RE-wrenches] Quantifying power quality

2014-10-12 Thread Tump
Thats the best fix I've heard yet! Document then DUMP IT! With the power logger you would also be able to capture the transition from utility to SI for your home auto gusto see if he is able to accept the power quality too. On Oct 12, 2014, at 10:24 AM, Chris Mason wrote: > I recently worked on

Re: [RE-wrenches] Quantifying power quality

2014-10-12 Thread Chris Mason
I recently worked on a Sunny Island/Sunny Boy system in a nearby island, that powered and protected a complete Home Automation system, including the airco system keeping it cool. I had to restart the Sunny Islands to sort out a COMS problem, which revealed some IT issues. It turns out the Sunny Isl

Re: [RE-wrenches] Quantifying power quality

2014-10-12 Thread Mac Lewis
Hi William, Power quality, in your case, refers to how close to 60 Hz (frequency component), 120/240 VAC RMS (amplitude component) your voltage waveform is. Every waveform is the superposition of different frequencies, amplitudes etc. Power quality requirements for a devices input or output are

Re: [RE-wrenches] Quantifying power quality

2014-10-12 Thread Tump
I have in the past have used the Fluke power logger 1735 , It will monitor 1/3 phases voltages spikes/dips in V, A, Hz , +++ AND one is able to print out a time line of all the "occurrences" that may trip the UPS. I rent this from some folks in Texas quite reasonable ~ $230/month or weekly too.