Re: [AFMUG] Solar Array Voc

[Forrest Christian (List Account)]

Let me see if I can re-phrase my question:

I'm redesigning a voltage input circuit for one of the sitemonitor products
- this is for voltage metering, not for powering the device.   One of the
common questions I get asked is 'can I monitor my solar array voltage'.
Currently the answer is usually 'probably not, unless you are certain the
Voc is below 60V, and that one side of the array is already grounded to
common (often isn't for mppt controllers)'.   I'd rather be able to say
something like 'sure, as long as the Voc isn't over X volts', where X is
high enough that it contains a reasonable subset of the arrays out there.
 I don't think supporting 150V arrays is in the cards (and yes, I know the
tristar MMPT goes up to 150V), since that starts getting in the range where
clearances get hard to do on the circuit board.

So I guess the question should be:   What voltage would be able to measure
most of the array voltages out there?

On Tue, Nov 27, 2018 at 7:07 PM Robert  wrote:

> Morningstar makes one of the better charge controllers and the one that
> I like has ethernet access built in.   It takes up to 150 V from the
> arrays.They also have their new Mega Controller that will do up to
> 600 Volts I don't know of any WISPs that are using it.   We have sites
> that we have 2x Morningstars feeding our battery sets...
>
> Robert
>
> On 11/27/18 5:07 PM, Forrest Christian (List Account) wrote:
> > Looking at determining the maximum reasonable voltage range for a new
> > product I'm working on.
> >
> > I'm wanting to include a reasonable input for measuring solar panel
> > voltage (a common request).   For those who are running solar arrays to
> > charge a DC site (not grid-connected), I'm wondering what type of array
> > voltages you're running.   I'd prefer the Voc figure since that is worst
> > case, but even the nameplate voltage (i.e. multiples of 12V) would be
> > useful since I can kinda infer the Voc from that.
> >
> > I suspect some of you are running rather high voltages (>100Voc) on your
> > arrays, not sure If I'm going to be able to measure that high, but would
> > like to get a feel for what the reality is.
> >
> > --
> > *Forrest Christian* /CEO//, PacketFlux Technologies, Inc./
> > Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602
> > forre...@imach.com  |
> > http://www.packetflux.com 
> > 
> >  
> >
> >
> >
> >
>
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Re: [AFMUG] Solar Array Voc

[Robert]

Morningstar makes one of the better charge controllers and the one that 
I like has ethernet access built in.   It takes up to 150 V from the 
arrays.They also have their new Mega Controller that will do up to 
600 Volts I don't know of any WISPs that are using it.   We have sites 
that we have 2x Morningstars feeding our battery sets...


Robert

On 11/27/18 5:07 PM, Forrest Christian (List Account) wrote:
Looking at determining the maximum reasonable voltage range for a new 
product I'm working on.


I'm wanting to include a reasonable input for measuring solar panel 
voltage (a common request).   For those who are running solar arrays to 
charge a DC site (not grid-connected), I'm wondering what type of array 
voltages you're running.   I'd prefer the Voc figure since that is worst 
case, but even the nameplate voltage (i.e. multiples of 12V) would be 
useful since I can kinda infer the Voc from that.


I suspect some of you are running rather high voltages (>100Voc) on your 
arrays, not sure If I'm going to be able to measure that high, but would 
like to get a feel for what the reality is.


--
*Forrest Christian* /CEO//, PacketFlux Technologies, Inc./
Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602
forre...@imach.com  | 
http://www.packetflux.com 
 
 







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Re: [AFMUG] Local Generator

[Ken Hohhof]

Watch out that some automatic transfer switches assume half voltage is good 
enough, that’s actually a failure mode we see a lot on commercial power.

 

From: AF  On Behalf Of Matt
Sent: Tuesday, November 27, 2018 5:46 PM
To: af@af.afmug.com
Subject: Re: [AFMUG] Local Generator

 

On the same subject in our NOC we have a APC AP7723 AC transfer switch.  Has 
two AC inputs and if one fails automatically switches to the other.  Handy when 
doing maintenance on the UPS system.  Would like something like that for when 
we use a generator at a remote site we can plug one input into generator and 
other into AC power.  The idea is that hopefully when the generator runs out of 
fuel power might be back on and save an urgent trip to switch over.  Was 
thinking there should be something cheaper and smaller than the APC unit?

 

This only applies to our small sites and rare extended outage.  Most our main 
sites have a ~50 gallon propane tank and small generac with transfer switch.

 

 

On Tue, Nov 27, 2018 at 8:20 AM Mike Hammett mailto:af...@ics-il.net> > wrote:

What's a good generator likely to be in-stock locally? Mine has gone missing. 
It doesn't need to be big. A couple hundred watts is more than enough. It just 
needs to produce clean power for a UPS to ingest.

 



-
Mike Hammett
  Intelligent Computing Solutions
   
  
  
 
  Midwest Internet Exchange
   
  
 
  The Brothers WISP
   
 




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[AFMUG] Solar Array Voc

[Forrest Christian (List Account)]

Looking at determining the maximum reasonable voltage range for a new
product I'm working on.

I'm wanting to include a reasonable input for measuring solar panel voltage
(a common request).   For those who are running solar arrays to charge a DC
site (not grid-connected), I'm wondering what type of array voltages you're
running.   I'd prefer the Voc figure since that is worst case, but even the
nameplate voltage (i.e. multiples of 12V) would be useful since I can kinda
infer the Voc from that.

I suspect some of you are running rather high voltages (>100Voc) on your
arrays, not sure If I'm going to be able to measure that high, but would
like to get a feel for what the reality is.

-- 
*Forrest Christian* *CEO**, PacketFlux Technologies, Inc.*
Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602
forre...@imach.com | http://www.packetflux.com
  

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Re: [AFMUG] Local Generator

[TJ Trout]

you can get old apc transfer switches on ebay for $20-40 I think, rackmount

On Tue, Nov 27, 2018 at 4:46 PM Robert Andrews 
wrote:

> Just had the same issue at a remote customer site that had the customers
> ac down.  So I found this:
>
>
> https://www.amazon.com/gp/product/B004S5Y158/ref=oh_aui_detailpage_o04_s00?ie=UTF8=1
>
>
>
>
> On 11/27/2018 03:46 PM, Matt wrote:
> > On the same subject in our NOC we have a APC AP7723 AC transfer switch.
> > Has two AC inputs and if one fails automatically switches to the other.
> > Handy when doing maintenance on the UPS system.  Would like something
> > like that for when we use a generator at a remote site we can plug one
> > input into generator and other into AC power.  The idea is that
> > hopefully when the generator runs out of fuel power might be back on and
> > save an urgent trip to switch over.  Was thinking there should be
> > something cheaper and smaller than the APC unit?
> >
> > This only applies to our small sites and rare extended outage.  Most our
> > main sites have a ~50 gallon propane tank and small generac with
> > transfer switch.
> >
> >
> > On Tue, Nov 27, 2018 at 8:20 AM Mike Hammett  > > wrote:
> >
> > What's a good generator likely to be in-stock locally? Mine has gone
> > missing. It doesn't need to be big. A couple hundred watts is more
> > than enough. It just needs to produce clean power for a UPS to
> ingest.
> >
> >
> >
> >
> > -
> > Mike Hammett
> > Intelligent Computing Solutions 
> > <
> https://plus.google.com/+IntelligentComputingSolutionsDeKalb><
> https://www.linkedin.com/company/intelligent-computing-solutions><
> https://twitter.com/ICSIL>
> > Midwest Internet Exchange 
> > <
> https://www.linkedin.com/company/midwest-internet-exchange><
> https://twitter.com/mdwestix>
> > The Brothers WISP 
> > 
> >
> >
> > 
> > --
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> > AF@af.afmug.com 
> > http://af.afmug.com/mailman/listinfo/af_af.afmug.com
> >
> >
> >
>
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Re: [AFMUG] Local Generator

[Chuck McCown]

I built one from a cheap rack mount outlet strip from FS.com I think and a 
relay.  Maybe had $20 into it.


-Original Message- 
From: Robert Andrews

Sent: Tuesday, November 27, 2018 5:45 PM
To: af@af.afmug.com
Subject: Re: [AFMUG] Local Generator

Just had the same issue at a remote customer site that had the customers
ac down.  So I found this:

https://www.amazon.com/gp/product/B004S5Y158/ref=oh_aui_detailpage_o04_s00?ie=UTF8=1




On 11/27/2018 03:46 PM, Matt wrote:
On the same subject in our NOC we have a APC AP7723 AC transfer switch. 
Has two AC inputs and if one fails automatically switches to the other. 
Handy when doing maintenance on the UPS system.  Would like something like 
that for when we use a generator at a remote site we can plug one input 
into generator and other into AC power.  The idea is that hopefully when 
the generator runs out of fuel power might be back on and save an urgent 
trip to switch over.  Was thinking there should be something cheaper and 
smaller than the APC unit?


This only applies to our small sites and rare extended outage.  Most our 
main sites have a ~50 gallon propane tank and small generac with transfer 
switch.



On Tue, Nov 27, 2018 at 8:20 AM Mike Hammett > wrote:


What's a good generator likely to be in-stock locally? Mine has gone
missing. It doesn't need to be big. A couple hundred watts is more
than enough. It just needs to produce clean power for a UPS to ingest.




-
Mike Hammett
Intelligent Computing Solutions 


Midwest Internet Exchange 


The Brothers WISP 




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Re: [AFMUG] Local Generator

[Robert Andrews]

Just had the same issue at a remote customer site that had the customers 
ac down.  So I found this:


https://www.amazon.com/gp/product/B004S5Y158/ref=oh_aui_detailpage_o04_s00?ie=UTF8=1




On 11/27/2018 03:46 PM, Matt wrote:
On the same subject in our NOC we have a APC AP7723 AC transfer switch.  
Has two AC inputs and if one fails automatically switches to the other.  
Handy when doing maintenance on the UPS system.  Would like something 
like that for when we use a generator at a remote site we can plug one 
input into generator and other into AC power.  The idea is that 
hopefully when the generator runs out of fuel power might be back on and 
save an urgent trip to switch over.  Was thinking there should be 
something cheaper and smaller than the APC unit?


This only applies to our small sites and rare extended outage.  Most our 
main sites have a ~50 gallon propane tank and small generac with 
transfer switch.



On Tue, Nov 27, 2018 at 8:20 AM Mike Hammett > wrote:


What's a good generator likely to be in-stock locally? Mine has gone
missing. It doesn't need to be big. A couple hundred watts is more
than enough. It just needs to produce clean power for a UPS to ingest.




-
Mike Hammett
Intelligent Computing Solutions 


Midwest Internet Exchange 


The Brothers WISP 




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Re: [AFMUG] Local Generator

[Matt]

On the same subject in our NOC we have a APC AP7723 AC transfer switch.
Has two AC inputs and if one fails automatically switches to the other.
Handy when doing maintenance on the UPS system.  Would like something like
that for when we use a generator at a remote site we can plug one input
into generator and other into AC power.  The idea is that hopefully when
the generator runs out of fuel power might be back on and save an urgent
trip to switch over.  Was thinking there should be something cheaper and
smaller than the APC unit?

This only applies to our small sites and rare extended outage.  Most our
main sites have a ~50 gallon propane tank and small generac with transfer
switch.


On Tue, Nov 27, 2018 at 8:20 AM Mike Hammett  wrote:

> What's a good generator likely to be in-stock locally? Mine has gone
> missing. It doesn't need to be big. A couple hundred watts is more than
> enough. It just needs to produce clean power for a UPS to ingest.
>
>
>
> -
> Mike Hammett
> Intelligent Computing Solutions 
> 
> 
> 
> 
> Midwest Internet Exchange 
> 
> 
> 
> The Brothers WISP 
> 
>
>
> 
> --
> AF mailing list
> AF@af.afmug.com
> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
>
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Re: [AFMUG] Local Generator

[SmarterBroadband]

No idea about the oil, I will have to ask one of my guys.
Adam

-Original Message-
From: AF [mailto:af-boun...@af.afmug.com] On Behalf Of Robert Andrews
Sent: Tuesday, November 27, 2018 11:11 AM
To: af@af.afmug.com
Subject: Re: [AFMUG] Local Generator

I was looking to buy some pre-converted 1000's for about 2K each and sell my 
1000 gas models but I will try one of their trifuel kits and see 
how it works out!  Thanks!   How is the oil quality when burning 
propane?   Does that make it work better?   I would hate to convert, go 
to a longer runtime and find out that the oil is dying before the fuel 
bottle.   But even if its just the same, it's a win hauling/connecting 
propane vs. gas...

Robert

On 11/27/2018 10:22 AM, SmarterBroadband wrote:
> I second the Honda 1000 and 2000 inverter generators.
> 
> Also suggest you convert to propane using a 
> https://www.motorsnorkel.com/
> 
> We had ours done by them many years ago, I believe with the new 
> snorkel it is very easy to DIY.
> 
> They run a long time on a BBQ sized tank, you can use a bigger tank 
> for extended run times and it is clean….
> 
> Adam
> 
> *From:* AF [mailto:af-boun...@af.afmug.com] *On Behalf Of *Mike 
> Hammett
> *Sent:* Tuesday, November 27, 2018 6:33 AM
> *To:* AnimalFarm Microwave Users Group 
> *Subject:* Re: [AFMUG] Local Generator
> 
> Am I looking for it to be an inverter-type generator for the UPS to 
> play nice?
> 
> 
> 
> -
> Mike Hammett
> Intelligent Computing Solutions  
>  omputingSolutionsDeKalb> computing-solutions>
> Midwest Internet Exchange  
>  idwest-internet-exchange>
> The Brothers WISP  
> 
> 
> 
> 
> 
> --
> --
> 
> *From: *"Mike Hammett" mailto:af...@ics-il.net>>
> *To: *af@af.afmug.com 
> *Sent: *Tuesday, November 27, 2018 8:19:11 AM
> *Subject: *[AFMUG] Local Generator
> 
> What's a good generator likely to be in-stock locally? Mine has gone 
> missing. It doesn't need to be big. A couple hundred watts is more 
> than enough. It just needs to produce clean power for a UPS to ingest.
> 
> 
> 
> -
> Mike Hammett
> Intelligent Computing Solutions  
>  omputingSolutionsDeKalb> computing-solutions>
> Midwest Internet Exchange  
>  idwest-internet-exchange>
> The Brothers WISP  
> 
> 
> 
> 
> 
> 
> --
> AF mailing list
> AF@af.afmug.com  
> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
> 
> 
> 

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Re: [AFMUG] Ot: generator farm

[Robert Andrews]

1Kw resistive load = non flammable heater


On 11/27/2018 12:25 PM, Seth Mattinen wrote:

On 11/27/18 12:12, Chuck McCown wrote:
I have never understood how a rotating rotor/stator combo will not 
produce a clean sinewave.
I have seen it myself with APCs not happy with back up generator 
power. I wonder if perhaps it is more of a frequency problem.



The rotating thing is always going to make a sine wave. But throttle 
response and voltage regulators vary.


I have an old Cat 40kW diesel generator that if it's unloaded the 
voltage regulator is noisy. I don't use it anymore but the simple 
solution was to keep a 1kW resistive base load connected all times.




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Re: [AFMUG] Local Generator

[Steve Jones]

pick up a nice honda propane unit and leave it in the same place as the one
that went missing

On Tue, Nov 27, 2018 at 8:20 AM Mike Hammett  wrote:

> What's a good generator likely to be in-stock locally? Mine has gone
> missing. It doesn't need to be big. A couple hundred watts is more than
> enough. It just needs to produce clean power for a UPS to ingest.
>
>
>
> -
> Mike Hammett
> Intelligent Computing Solutions 
> 
> 
> 
> 
> Midwest Internet Exchange 
> 
> 
> 
> The Brothers WISP 
> 
>
>
> 
> --
> AF mailing list
> AF@af.afmug.com
> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
>
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Re: [AFMUG] Ot: generator farm

[Seth Mattinen]

On 11/27/18 12:12, Chuck McCown wrote:
I have never understood how a rotating rotor/stator combo will not 
produce a clean sinewave.
I have seen it myself with APCs not happy with back up generator power.  
I wonder if perhaps it is more of a frequency problem.



The rotating thing is always going to make a sine wave. But throttle 
response and voltage regulators vary.


I have an old Cat 40kW diesel generator that if it's unloaded the 
voltage regulator is noisy. I don't use it anymore but the simple 
solution was to keep a 1kW resistive base load connected all times.


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Re: [AFMUG] Local Generator

[Josh Luthman]

All my mobile ones are from Lowes - Troy Bilt brand.  They're usually
Briggs engines.  They all work for the APC UPS units, Mikrotik stuff, etc.

I've got the 5 gallon gas units, they're about 24 hours of run time - we
fill it up in the morning and at night to be safe.

Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373


On Tue, Nov 27, 2018 at 2:26 PM Bill Prince  wrote:

> Propane burns a lot cleaner than gas. It's a lower energy vale (about
> 80% IIRC), but produces a lot fewer by-products.
>
>
> bp
> 
>
> On 11/27/2018 11:11 AM, Robert Andrews wrote:
> > I was looking to buy some pre-converted 1000's for about 2K each and
> > sell my 1000 gas models but I will try one of their trifuel kits and
> > see how it works out!  Thanks!   How is the oil quality when burning
> > propane?   Does that make it work better?   I would hate to convert,
> > go to a longer runtime and find out that the oil is dying before the
> > fuel bottle.   But even if its just the same, it's a win
> > hauling/connecting propane vs. gas...
> >
> > Robert
> >
> > On 11/27/2018 10:22 AM, SmarterBroadband wrote:
> >> I second the Honda 1000 and 2000 inverter generators.
> >>
> >> Also suggest you convert to propane using a
> >> https://www.motorsnorkel.com/
> >>
> >> We had ours done by them many years ago, I believe with the new
> >> snorkel it is very easy to DIY.
> >>
> >> They run a long time on a BBQ sized tank, you can use a bigger tank
> >> for extended run times and it is clean….
> >>
> >> Adam
> >>
> >> *From:* AF [mailto:af-boun...@af.afmug.com] *On Behalf Of *Mike Hammett
> >> *Sent:* Tuesday, November 27, 2018 6:33 AM
> >> *To:* AnimalFarm Microwave Users Group 
> >> *Subject:* Re: [AFMUG] Local Generator
> >>
> >> Am I looking for it to be an inverter-type generator for the UPS to
> >> play nice?
> >>
> >>
> >>
> >> -
> >> Mike Hammett
> >> Intelligent Computing Solutions 
> >> <
> https://plus.google.com/+IntelligentComputingSolutionsDeKalb><
> https://www.linkedin.com/company/intelligent-computing-solutions><
> https://twitter.com/ICSIL>
> >>
> >> Midwest Internet Exchange 
> >> <
> https://www.linkedin.com/company/midwest-internet-exchange><
> https://twitter.com/mdwestix>
> >>
> >> The Brothers WISP 
> >> 
> >>
> >>
> >> 
> >>
> >> 
> >>
> >> *From: *"Mike Hammett" mailto:af...@ics-il.net>>
> >> *To: *af@af.afmug.com 
> >> *Sent: *Tuesday, November 27, 2018 8:19:11 AM
> >> *Subject: *[AFMUG] Local Generator
> >>
> >> What's a good generator likely to be in-stock locally? Mine has gone
> >> missing. It doesn't need to be big. A couple hundred watts is more
> >> than enough. It just needs to produce clean power for a UPS to ingest.
> >>
> >>
> >>
> >> -
> >> Mike Hammett
> >> Intelligent Computing Solutions 
> >> <
> https://plus.google.com/+IntelligentComputingSolutionsDeKalb><
> https://www.linkedin.com/company/intelligent-computing-solutions><
> https://twitter.com/ICSIL>
> >>
> >> Midwest Internet Exchange 
> >> <
> https://www.linkedin.com/company/midwest-internet-exchange><
> https://twitter.com/mdwestix>
> >>
> >> The Brothers WISP 
> >> 
> >>
> >>
> >> 
> >>
> >>
> >> --
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> >> AF@af.afmug.com 
> >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
> >>
> >>
> >>
> >
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Re: [AFMUG] Ot: generator farm

[Chuck McCown]

I have never understood how a rotating rotor/stator combo will not produce a 
clean sinewave.  
I have seen it myself with APCs not happy with back up generator power.  I 
wonder if perhaps it is more of a frequency problem.

From: Ken Hohhof 
Sent: Tuesday, November 27, 2018 1:05 PM
To: 'AnimalFarm Microwave Users Group' 
Subject: Re: [AFMUG] Ot: generator farm

I have always gone for the Japanese inverter generators (Yamaha, Honda, etc.) 
but recently saw an ad for one from Generac that sounded like good features for 
the price, may be available at big box stores?  Of course they are probably 
slapping their name on something they OEM from China.  Also the run time might 
have been on the low side, i.e. fuel tank might be on the small side.

 

The other thing is most of these have warranties for residential use and also 
are supposed to have the oil changed every 20 hours or something like that.  
Honestly I’ve run my Honda a lot longer than that and the oil looked like new 
when I drained it.  Yamaha I think sells both residential and commercial 
models, what do you want to bet it’s the same hardware just with a different 
price and warranty?

 

Some of the non inverter generators may not produce clean enough voltage, 
frequency, etc. to satisfy the UPS.  I have had APC units go berserk switching 
on and off batteries every few seconds because it thought the input power was 
bad, that was with a rental generator meant for running tools at a jobsite.

 

From: AF  On Behalf Of Mike Hammett
Sent: Tuesday, November 27, 2018 8:42 AM
To: AnimalFarm Microwave Users Group 
Subject: Re: [AFMUG] Ot: generator farm

 

Heh, I just got notified that I need to bring a generator to my tower in that 
area. Can't find it, so I have to find one to buy that will run a UPS.



-
Mike Hammett
Intelligent Computing Solutions

Midwest Internet Exchange

The Brothers WISP








From: "Nate Burke" 
To: Af@af.afmug.com
Sent: Monday, November 26, 2018 9:37:13 PM
Subject: [AFMUG] Ot: generator farm

When a tower loses power and there is not a site generator.
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Re: [AFMUG] Ot: generator farm

[Ken Hohhof]

I have always gone for the Japanese inverter generators (Yamaha, Honda, etc.) 
but recently saw an ad for one from Generac that sounded like good features for 
the price, may be available at big box stores?  Of course they are probably 
slapping their name on something they OEM from China.  Also the run time might 
have been on the low side, i.e. fuel tank might be on the small side.

 

The other thing is most of these have warranties for residential use and also 
are supposed to have the oil changed every 20 hours or something like that.  
Honestly I’ve run my Honda a lot longer than that and the oil looked like new 
when I drained it.  Yamaha I think sells both residential and commercial 
models, what do you want to bet it’s the same hardware just with a different 
price and warranty?

 

Some of the non inverter generators may not produce clean enough voltage, 
frequency, etc. to satisfy the UPS.  I have had APC units go berserk switching 
on and off batteries every few seconds because it thought the input power was 
bad, that was with a rental generator meant for running tools at a jobsite.

 

From: AF  On Behalf Of Mike Hammett
Sent: Tuesday, November 27, 2018 8:42 AM
To: AnimalFarm Microwave Users Group 
Subject: Re: [AFMUG] Ot: generator farm

 

Heh, I just got notified that I need to bring a generator to my tower in that 
area. Can't find it, so I have to find one to buy that will run a UPS.



-
Mike Hammett
  Intelligent Computing Solutions
   
  
  
 
  Midwest Internet Exchange
   
  
 
  The Brothers WISP
   
 




  _  

From: "Nate Burke" mailto:n...@blastcomm.com> >
To: Af@af.afmug.com  
Sent: Monday, November 26, 2018 9:37:13 PM
Subject: [AFMUG] Ot: generator farm

When a tower loses power and there is not a site generator.
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Re: [AFMUG] Local Generator

[Bill Prince]

Propane burns a lot cleaner than gas. It's a lower energy vale (about 
80% IIRC), but produces a lot fewer by-products.



bp


On 11/27/2018 11:11 AM, Robert Andrews wrote:
I was looking to buy some pre-converted 1000's for about 2K each and 
sell my 1000 gas models but I will try one of their trifuel kits and 
see how it works out!  Thanks!   How is the oil quality when burning 
propane?   Does that make it work better?   I would hate to convert, 
go to a longer runtime and find out that the oil is dying before the 
fuel bottle.   But even if its just the same, it's a win 
hauling/connecting propane vs. gas...


Robert

On 11/27/2018 10:22 AM, SmarterBroadband wrote:

I second the Honda 1000 and 2000 inverter generators.

Also suggest you convert to propane using a 
https://www.motorsnorkel.com/


We had ours done by them many years ago, I believe with the new 
snorkel it is very easy to DIY.


They run a long time on a BBQ sized tank, you can use a bigger tank 
for extended run times and it is clean….


Adam

*From:* AF [mailto:af-boun...@af.afmug.com] *On Behalf Of *Mike Hammett
*Sent:* Tuesday, November 27, 2018 6:33 AM
*To:* AnimalFarm Microwave Users Group 
*Subject:* Re: [AFMUG] Local Generator

Am I looking for it to be an inverter-type generator for the UPS to 
play nice?




-
Mike Hammett
Intelligent Computing Solutions 
 


Midwest Internet Exchange 
 


The Brothers WISP 







*From: *"Mike Hammett" mailto:af...@ics-il.net>>
*To: *af@af.afmug.com 
*Sent: *Tuesday, November 27, 2018 8:19:11 AM
*Subject: *[AFMUG] Local Generator

What's a good generator likely to be in-stock locally? Mine has gone 
missing. It doesn't need to be big. A couple hundred watts is more 
than enough. It just needs to produce clean power for a UPS to ingest.




-
Mike Hammett
Intelligent Computing Solutions 
 


Midwest Internet Exchange 
 


The Brothers WISP 






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Re: [AFMUG] Local Generator

[Robert Andrews]

I was looking to buy some pre-converted 1000's for about 2K each and 
sell my 1000 gas models but I will try one of their trifuel kits and see 
how it works out!  Thanks!   How is the oil quality when burning 
propane?   Does that make it work better?   I would hate to convert, go 
to a longer runtime and find out that the oil is dying before the fuel 
bottle.   But even if its just the same, it's a win hauling/connecting 
propane vs. gas...


Robert

On 11/27/2018 10:22 AM, SmarterBroadband wrote:

I second the Honda 1000 and 2000 inverter generators.

Also suggest you convert to propane using a https://www.motorsnorkel.com/

We had ours done by them many years ago, I believe with the new snorkel 
it is very easy to DIY.


They run a long time on a BBQ sized tank, you can use a bigger tank for 
extended run times and it is clean….


Adam

*From:* AF [mailto:af-boun...@af.afmug.com] *On Behalf Of *Mike Hammett
*Sent:* Tuesday, November 27, 2018 6:33 AM
*To:* AnimalFarm Microwave Users Group 
*Subject:* Re: [AFMUG] Local Generator

Am I looking for it to be an inverter-type generator for the UPS to play 
nice?




-
Mike Hammett
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 







*From: *"Mike Hammett" mailto:af...@ics-il.net>>
*To: *af@af.afmug.com 
*Sent: *Tuesday, November 27, 2018 8:19:11 AM
*Subject: *[AFMUG] Local Generator

What's a good generator likely to be in-stock locally? Mine has gone 
missing. It doesn't need to be big. A couple hundred watts is more than 
enough. It just needs to produce clean power for a UPS to ingest.




-
Mike Hammett
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 






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Re: [AFMUG] Local Generator

[SmarterBroadband]

I second the Honda 1000 and 2000 inverter generators.

 

Also suggest you convert to propane using a https://www.motorsnorkel.com/

 

We had ours done by them many years ago, I believe with the new snorkel it is 
very easy to DIY.

 

They run a long time on a BBQ sized tank, you can use a bigger tank for 
extended run times and it is clean….

 

Adam

 

From: AF [mailto:af-boun...@af.afmug.com] On Behalf Of Mike Hammett
Sent: Tuesday, November 27, 2018 6:33 AM
To: AnimalFarm Microwave Users Group 
Subject: Re: [AFMUG] Local Generator

 

Am I looking for it to be an inverter-type generator for the UPS to play nice?



-
Mike Hammett
  Intelligent Computing Solutions
   
  
  
 
  Midwest Internet Exchange
   
  
 
  The Brothers WISP
   
 




  _  

From: "Mike Hammett" mailto:af...@ics-il.net> >
To: af@af.afmug.com  
Sent: Tuesday, November 27, 2018 8:19:11 AM
Subject: [AFMUG] Local Generator

What's a good generator likely to be in-stock locally? Mine has gone missing. 
It doesn't need to be big. A couple hundred watts is more than enough. It just 
needs to produce clean power for a UPS to ingest.

 



-
Mike Hammett
  Intelligent Computing Solutions
   
  
  
 
  Midwest Internet Exchange
   
  
 
  The Brothers WISP
   
 





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Re: [AFMUG] Eltek Valere J series -48 or +48

[Adam Moffett]

Does Eltek have anything comparable to this:
http://www.ict-power.com/products/modular-power-series/

700W 1+1, battery management, 4 remotely controllable circuit breakers, 
and it's in one rack unit.
I'm looking at getting something like 40-50 of these for an upcoming 
build.  I had previously been talking to Alpha Technologies, but their 
solution was occupying a lot of space in a fairly small cabinet.  I like 
that this one was one and done and within budget.


If Eltek has something comparable I'd consider it.

-Adam


On 11/27/2018 11:28 AM, Chuck McCown wrote:

Yes, will get back to you.
*From:* Gino A. Villarini
*Sent:* Tuesday, November 27, 2018 2:31 AM
*To:* AnimalFarm Microwave Users Group
*Subject:* Re: [AFMUG] Eltek Valere J series -48 or +48

Chuck, can you quote:

EltekRectiverter Power Core 6 KVA 1ph ?

*GinoVillarini
*Founder/President
@gvillarini
t: 787.273.4143
m:
aeronet-logo  	inc500 
 	fb-logo 
 	insta-logo 
 	in-logo 
 	tw-logo 
 
	yt-logo  	


www.aeronetpr.com | Metro Office Park #18 
Suite 304 Guaynabo, PR 00968


*From: *AF  on behalf of Chuck McCown 


*Reply-To: *AnimalFarm Microwave Users Group 
*Date: *Monday, November 26, 2018 at 6:59 PM
*To: *AnimalFarm Microwave Users Group 
*Subject: *Re: [AFMUG] Eltek Valere J series -48 or +48

I am an Eltek dealer.  Low volume but I can probably get you a decent 
price.


*From:*TJ Trout

*Sent:*Monday, November 26, 2018 3:40 PM

*To:*AnimalFarm Microwave Users Group

*Subject:*[AFMUG] Eltek Valere J series -48 or +48

I'm looking at the Valere series and I can't seem determine if it's 
+48 or -48, seems like it's +48 but I thought all the telecom stuff 
was positive ground.


How do you go about powering negative ground loads from a positive 
ground power source?


I'm assuming you can leave out the neutral and isolate the chassis?



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Re: [AFMUG] Local Generator

[Bill Prince]

That makes a lot of sense. Those things probably don't expect to go much 
beyond 50 hours per oil change, but over a longer period of (calendar) 
time. Every 3rd extended run would get you at least 150 hours if you got 
2 days per run. It would be on the order of 200 hours if you got 3 days 
per run.



bp


On 11/27/2018 8:26 AM, Robert Andrews wrote:
We ran the extended tanks a lot on a few 1000's for the 16-17 
megawinter out here.   Be sure and follow the maintenance on them when 
you do extended runs of those 2-3 days as they will trash their oil 
doing that.   We got to where we were changing the oil every third 
extended run and it showed in the oil we were pouring out.   We didn't 
at first and now one of the 1000's is running pretty smokey compared 
to the other two.


Robert

On 11/27/2018 07:55 AM, Adam Moffett wrote:

The extended fuel tank certainly de-stresses the situation.

On 11/27/2018 10:38 AM, Darin Steffl wrote:

You need an inverter generator which generates clean sinewave power.

The best and most reliable will be the Honda eu1000 or eu2200 which 
we have one and it's been awesome! Will last forever if you follow 
normal maintenance schedule. They should be stocked locally at any 
place that sells tools or generators.


We also bought and extended runtime tank on eBay to allow it to run 
up to 2 or 3 days without a refill.


On Tue, Nov 27, 2018, 9:26 AM Larry Smith  wrote:


    We found that on our APC ups units pretty much all of them
    work from most generators if we change the input sensitivity
    from high to medium.  Apparently has something to do with
    how it views the square wave of the input power.

    --     Larry Smith
    lesm...@ecsis.net 

    On Tue November 27 2018 08:59, Matt Hoppes wrote:
    > Yes. You want an investor style.
    >
    > > On Nov 27, 2018, at 09:47, Adam Moffett mailto:dmmoff...@gmail.com>> wrote:
    > >
    > > I was going to suggest inverter, but more for the long 
run-time.

    > > We got a Ryobi inverter generator from Home Depot and it has
    run a UPS
    > > before.  I couldn't tell you the model number.
    > >
    > >> On 11/27/2018 9:33 AM, Mike Hammett wrote:
    > >> Am I looking for it to be an inverter-type generator for the
    UPS to play
    > >> nice?
    > >>
    > >>
    > >>
    > >> -
    > >> Mike Hammett
    > >> Intelligent Computing Solutions
    > >>
    > >> Midwest Internet Exchange
    > >>
    > >> The Brothers WISP
    > >>
    > >>
    > >>
    > >>
    > >> From: "Mike Hammett" >

    > >> To: af@af.afmug.com 
    > >> Sent: Tuesday, November 27, 2018 8:19:11 AM
    > >> Subject: [AFMUG] Local Generator
    > >>
    > >> What's a good generator likely to be in-stock locally? Mine
    has gone
    > >> missing. It doesn't need to be big. A couple hundred watts is
    more than
    > >> enough. It just needs to produce clean power for a UPS to 
ingest.

    > >>
    > >>
    > >>
    > >> -
    > >> Mike Hammett
    > >> Intelligent Computing Solutions
    > >>
    > >> Midwest Internet Exchange
    > >>
    > >> The Brothers WISP
    > >>
    > >>
    > >>
    > >>
    > >>
    > >> --
    > >> AF mailing list
    > >> AF@af.afmug.com 
    > >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
    > >
    > > --
    > > AF mailing list
    > > AF@af.afmug.com 
    > > http://af.afmug.com/mailman/listinfo/af_af.afmug.com

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Re: [AFMUG] Eltek Valere J series -48 or +48

[Chuck McCown]

Yes, will get back to you.  

From: Gino A. Villarini 
Sent: Tuesday, November 27, 2018 2:31 AM
To: AnimalFarm Microwave Users Group 
Subject: Re: [AFMUG] Eltek Valere J series -48 or +48

Chuck, can you quote:

 

Eltek Rectiverter Power Core 6 KVA 1ph ? 

 

Gino Villarini 
Founder/President
@gvillarini
t: 787.273.4143 
m: 
 
www.aeronetpr.com | Metro Office Park #18 Suite 304 Guaynabo, PR 00968

From: AF  on behalf of Chuck McCown 
Reply-To: AnimalFarm Microwave Users Group 
Date: Monday, November 26, 2018 at 6:59 PM
To: AnimalFarm Microwave Users Group 
Subject: Re: [AFMUG] Eltek Valere J series -48 or +48

 

I am an Eltek dealer.  Low volume but I can probably get you a decent price.  

 

From: TJ Trout 

Sent: Monday, November 26, 2018 3:40 PM

To: AnimalFarm Microwave Users Group 

Subject: [AFMUG] Eltek Valere J series -48 or +48

 

I'm looking at the Valere series and I can't seem determine if it's +48 or -48, 
seems like it's +48 but I thought all the telecom stuff was positive ground. 

 

How do you go about powering negative ground loads from a positive ground power 
source?

 

I'm assuming you can leave out the neutral and isolate the chassis? 

 

 




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Re: [AFMUG] Local Generator

[Robert Andrews]

We ran the extended tanks a lot on a few 1000's for the 16-17 megawinter 
out here.   Be sure and follow the maintenance on them when you do 
extended runs of those 2-3 days as they will trash their oil doing that. 
  We got to where we were changing the oil every third extended run and 
it showed in the oil we were pouring out.   We didn't at first and now 
one of the 1000's is running pretty smokey compared to the other two.


Robert

On 11/27/2018 07:55 AM, Adam Moffett wrote:

The extended fuel tank certainly de-stresses the situation.

On 11/27/2018 10:38 AM, Darin Steffl wrote:

You need an inverter generator which generates clean sinewave power.

The best and most reliable will be the Honda eu1000 or eu2200 which we 
have one and it's been awesome! Will last forever if you follow normal 
maintenance schedule. They should be stocked locally at any place that 
sells tools or generators.


We also bought and extended runtime tank on eBay to allow it to run up 
to 2 or 3 days without a refill.


On Tue, Nov 27, 2018, 9:26 AM Larry Smith  wrote:


We found that on our APC ups units pretty much all of them
work from most generators if we change the input sensitivity
from high to medium.  Apparently has something to do with
how it views the square wave of the input power.

-- 
Larry Smith

lesm...@ecsis.net 

On Tue November 27 2018 08:59, Matt Hoppes wrote:
> Yes. You want an investor style.
>
> > On Nov 27, 2018, at 09:47, Adam Moffett mailto:dmmoff...@gmail.com>> wrote:
> >
> > I was going to suggest inverter, but more for the long run-time.
> > We got a Ryobi inverter generator from Home Depot and it has
run a UPS
> > before.  I couldn't tell you the model number.
> >
> >> On 11/27/2018 9:33 AM, Mike Hammett wrote:
> >> Am I looking for it to be an inverter-type generator for the
UPS to play
> >> nice?
> >>
> >>
> >>
> >> -
> >> Mike Hammett
> >> Intelligent Computing Solutions
> >>
> >> Midwest Internet Exchange
> >>
> >> The Brothers WISP
> >>
> >>
> >>
> >>
> >> From: "Mike Hammett" mailto:af...@ics-il.net>>
> >> To: af@af.afmug.com 
> >> Sent: Tuesday, November 27, 2018 8:19:11 AM
> >> Subject: [AFMUG] Local Generator
> >>
> >> What's a good generator likely to be in-stock locally? Mine
has gone
> >> missing. It doesn't need to be big. A couple hundred watts is
more than
> >> enough. It just needs to produce clean power for a UPS to ingest.
> >>
> >>
> >>
> >> -
> >> Mike Hammett
> >> Intelligent Computing Solutions
> >>
> >> Midwest Internet Exchange
> >>
> >> The Brothers WISP
> >>
> >>
> >>
> >>
> >>
> >> --
> >> AF mailing list
> >> AF@af.afmug.com 
> >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
> >
> > --
> > AF mailing list
> > AF@af.afmug.com 
> > http://af.afmug.com/mailman/listinfo/af_af.afmug.com

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Re: [AFMUG] Local Generator

[Adam Moffett]

The extended fuel tank certainly de-stresses the situation.

On 11/27/2018 10:38 AM, Darin Steffl wrote:

You need an inverter generator which generates clean sinewave power.

The best and most reliable will be the Honda eu1000 or eu2200 which we 
have one and it's been awesome! Will last forever if you follow normal 
maintenance schedule. They should be stocked locally at any place that 
sells tools or generators.


We also bought and extended runtime tank on eBay to allow it to run up 
to 2 or 3 days without a refill.


On Tue, Nov 27, 2018, 9:26 AM Larry Smith  wrote:


We found that on our APC ups units pretty much all of them
work from most generators if we change the input sensitivity
from high to medium.  Apparently has something to do with
how it views the square wave of the input power.

-- 
Larry Smith

lesm...@ecsis.net 

On Tue November 27 2018 08:59, Matt Hoppes wrote:
> Yes. You want an investor style.
>
> > On Nov 27, 2018, at 09:47, Adam Moffett mailto:dmmoff...@gmail.com>> wrote:
> >
> > I was going to suggest inverter, but more for the long run-time.
> > We got a Ryobi inverter generator from Home Depot and it has
run a UPS
> > before.  I couldn't tell you the model number.
> >
> >> On 11/27/2018 9:33 AM, Mike Hammett wrote:
> >> Am I looking for it to be an inverter-type generator for the
UPS to play
> >> nice?
> >>
> >>
> >>
> >> -
> >> Mike Hammett
> >> Intelligent Computing Solutions
> >>
> >> Midwest Internet Exchange
> >>
> >> The Brothers WISP
> >>
> >>
> >>
> >>
> >> From: "Mike Hammett" mailto:af...@ics-il.net>>
> >> To: af@af.afmug.com 
> >> Sent: Tuesday, November 27, 2018 8:19:11 AM
> >> Subject: [AFMUG] Local Generator
> >>
> >> What's a good generator likely to be in-stock locally? Mine
has gone
> >> missing. It doesn't need to be big. A couple hundred watts is
more than
> >> enough. It just needs to produce clean power for a UPS to ingest.
> >>
> >>
> >>
> >> -
> >> Mike Hammett
> >> Intelligent Computing Solutions
> >>
> >> Midwest Internet Exchange
> >>
> >> The Brothers WISP
> >>
> >>
> >>
> >>
> >>
> >> --
> >> AF mailing list
> >> AF@af.afmug.com 
> >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
> >
> > --
> > AF mailing list
> > AF@af.afmug.com 
> > http://af.afmug.com/mailman/listinfo/af_af.afmug.com

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Re: [AFMUG] Local Generator

[Larry Smith]

We found that on our APC ups units pretty much all of them
work from most generators if we change the input sensitivity
from high to medium.  Apparently has something to do with
how it views the square wave of the input power.

-- 
Larry Smith
lesm...@ecsis.net

On Tue November 27 2018 08:59, Matt Hoppes wrote:
> Yes. You want an investor style.
>
> > On Nov 27, 2018, at 09:47, Adam Moffett  wrote:
> >
> > I was going to suggest inverter, but more for the long run-time.
> > We got a Ryobi inverter generator from Home Depot and it has run a UPS
> > before.  I couldn't tell you the model number.
> >
> >> On 11/27/2018 9:33 AM, Mike Hammett wrote:
> >> Am I looking for it to be an inverter-type generator for the UPS to play
> >> nice?
> >>
> >>
> >>
> >> -
> >> Mike Hammett
> >> Intelligent Computing Solutions
> >>
> >> Midwest Internet Exchange
> >>
> >> The Brothers WISP
> >>
> >>
> >>
> >>
> >> From: "Mike Hammett" 
> >> To: af@af.afmug.com
> >> Sent: Tuesday, November 27, 2018 8:19:11 AM
> >> Subject: [AFMUG] Local Generator
> >>
> >> What's a good generator likely to be in-stock locally? Mine has gone
> >> missing. It doesn't need to be big. A couple hundred watts is more than
> >> enough. It just needs to produce clean power for a UPS to ingest.
> >>
> >>
> >>
> >> -
> >> Mike Hammett
> >> Intelligent Computing Solutions
> >>
> >> Midwest Internet Exchange
> >>
> >> The Brothers WISP
> >>
> >>
> >>
> >>
> >>
> >> --
> >> AF mailing list
> >> AF@af.afmug.com
> >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
> >
> > --
> > AF mailing list
> > AF@af.afmug.com
> > http://af.afmug.com/mailman/listinfo/af_af.afmug.com

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Re: [AFMUG] Eltek Valere J series -48 or +48

[Carl Peterson]

Our J series are isolated from the chassis unless you bond ground to the
positive ground on it.  That being said, the fuses are on the - side so you
would want to take the main outputs to your own distribution panel or bus
with the fuses on the + leg if you were going to run it at +48



On Tue, Nov 27, 2018 at 1:13 AM TJ Trout  wrote:

> I get it now, the 48v never changes just the ground reference.
>
> I'm guessing the reason no one uses negative ground loads on a -48 system
> is the chassis ground being bonded to the inputs return.
>
> Could I therically isolate my eltek -48 from any ground and operate it as
> a negative ground system?
>
> Or if the chassis isn't bonded to either can I just avoid grounding the
> supply?
>
> On Mon, Nov 26, 2018, 10:29 PM TJ Trout 
>> Chuck,
>>
>> Are you sure the eltek's don't have the chassis ground bonded to the
>> positive output ?
>>
>> So I'm assuming the complication here is that if you reverse the wires,
>> when you try to power a +48v device, and it's negative input is bonded to
>> chassis ground and you have a ground path between the two (like a metal
>> rack) or possibly somehow through the AC ground/neutral you cause a direct
>> short circuit?
>>
>> I see mentions of DC-DC converters, but I don't see the point of using a
>> 300w RSD converter with a 2000W rectifier shelf?
>>
>>
>>
>> On Mon, Nov 26, 2018 at 2:57 PM  wrote:
>>
>>> It is 48.  Period.  You choose the reference if you want one.
>>>
>>> If you tie the + terminal to chassis ground then the – terminal is the
>>> hot –48 VDC terminal.
>>>
>>> If you tie the – terminal to chassis ground then the + terminal is the
>>> hot +48 VDC terminal.
>>>
>>> If you don’t tie either to chassis ground, then you will have to have a
>>> common return bar that is on the opposite rail from your fuses and circuit
>>> breakers.
>>>
>>> *From:* TJ Trout
>>> *Sent:* Monday, November 26, 2018 3:40 PM
>>> *To:* AnimalFarm Microwave Users Group
>>> *Subject:* [AFMUG] Eltek Valere J series -48 or +48
>>>
>>> I'm looking at the Valere series and I can't seem determine if it's +48
>>> or -48, seems like it's +48 but I thought all the telecom stuff was
>>> positive ground.
>>>
>>> How do you go about powering negative ground loads from a positive
>>> ground power source?
>>>
>>> I'm assuming you can leave out the neutral and isolate the chassis?
>>>
>>>
>>>
>>> --
>>> --
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>>> AF@af.afmug.com
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>>>
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Re: [AFMUG] Local Generator

[Matt Hoppes]

Yes. You want an investor style. 

> On Nov 27, 2018, at 09:47, Adam Moffett  wrote:
> 
> I was going to suggest inverter, but more for the long run-time.
> We got a Ryobi inverter generator from Home Depot and it has run a UPS 
> before.  I couldn't tell you the model number.
> 
> 
>> On 11/27/2018 9:33 AM, Mike Hammett wrote:
>> Am I looking for it to be an inverter-type generator for the UPS to play 
>> nice?
>> 
>> 
>> 
>> -
>> Mike Hammett
>> Intelligent Computing Solutions
>> 
>> Midwest Internet Exchange
>> 
>> The Brothers WISP
>> 
>> 
>> 
>> 
>> From: "Mike Hammett" 
>> To: af@af.afmug.com
>> Sent: Tuesday, November 27, 2018 8:19:11 AM
>> Subject: [AFMUG] Local Generator
>> 
>> What's a good generator likely to be in-stock locally? Mine has gone 
>> missing. It doesn't need to be big. A couple hundred watts is more than 
>> enough. It just needs to produce clean power for a UPS to ingest.
>> 
>> 
>> 
>> -
>> Mike Hammett
>> Intelligent Computing Solutions
>> 
>> Midwest Internet Exchange
>> 
>> The Brothers WISP
>> 
>> 
>> 
>> 
>> 
>> -- 
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>> 
>> 
>> 
> 
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Re: [AFMUG] Local Generator

[Adam Moffett]

I was going to suggest inverter, but more for the long run-time.
We got a Ryobi inverter generator from Home Depot and it has run a UPS 
before.  I couldn't tell you the model number.



On 11/27/2018 9:33 AM, Mike Hammett wrote:
Am I looking for it to be an inverter-type generator for the UPS to 
play nice?




-
Mike Hammett
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 





*From: *"Mike Hammett" 
*To: *af@af.afmug.com
*Sent: *Tuesday, November 27, 2018 8:19:11 AM
*Subject: *[AFMUG] Local Generator

What's a good generator likely to be in-stock locally? Mine has gone 
missing. It doesn't need to be big. A couple hundred watts is more 
than enough. It just needs to produce clean power for a UPS to ingest.





-
Mike Hammett
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 





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Re: [AFMUG] Ot: generator farm

[Mike Hammett]

Heh, I just got notified that I need to bring a generator to my tower in that 
area. Can't find it, so I have to find one to buy that will run a UPS. 




- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 




- Original Message -

From: "Nate Burke"  
To: Af@af.afmug.com 
Sent: Monday, November 26, 2018 9:37:13 PM 
Subject: [AFMUG] Ot: generator farm 

When a tower loses power and there is not a site generator. 
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Re: [AFMUG] Local Generator

[Mike Hammett]

Am I looking for it to be an inverter-type generator for the UPS to play nice? 




- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 




- Original Message -

From: "Mike Hammett"  
To: af@af.afmug.com 
Sent: Tuesday, November 27, 2018 8:19:11 AM 
Subject: [AFMUG] Local Generator 



What's a good generator likely to be in-stock locally? Mine has gone missing. 
It doesn't need to be big. A couple hundred watts is more than enough. It just 
needs to produce clean power for a UPS to ingest. 



- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 





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Re: [AFMUG] Local Generator

[Matt Hoppes]

Polaris 1000i

> On Nov 27, 2018, at 09:19, Mike Hammett  wrote:
> 
> What's a good generator likely to be in-stock locally? Mine has gone missing. 
> It doesn't need to be big. A couple hundred watts is more than enough. It 
> just needs to produce clean power for a UPS to ingest.
> 
> 
> 
> -
> Mike Hammett
> Intelligent Computing Solutions
> 
> Midwest Internet Exchange
> 
> The Brothers WISP
> 
> 
> 
> 
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Re: [AFMUG] Local Generator

[Dennis Burgess via AF]

We went with a 20k Generac propane unit.  The tough part is clean power for UPS 
..  ☺


Dennis Burgess, Mikrotik Certified Trainer
Author of "Learn RouterOS- Second Edition”
Link Technologies, Inc -- Mikrotik & WISP Support Services
Office: 314-735-0270  Website: 
http://www.linktechs.net
Create Wireless Coverage’s with www.towercoverage.com

From: AF  On Behalf Of Mike Hammett
Sent: Tuesday, November 27, 2018 8:19 AM
To: af@af.afmug.com
Subject: [AFMUG] Local Generator


What's a good generator likely to be in-stock locally? Mine has gone missing. 
It doesn't need to be big. A couple hundred watts is more than enough. It just 
needs to produce clean power for a UPS to ingest.



-
Mike Hammett
Intelligent Computing Solutions
[http://www.ics-il.com/images/fbicon.png][http://www.ics-il.com/images/googleicon.png][http://www.ics-il.com/images/linkedinicon.png][http://www.ics-il.com/images/twittericon.png]
Midwest Internet Exchange
[http://www.ics-il.com/images/fbicon.png][http://www.ics-il.com/images/linkedinicon.png][http://www.ics-il.com/images/twittericon.png]
The Brothers WISP
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[AFMUG] Eltek Mx

[Chuck McCown]

>From Eltek:  Just connect + to + and - to - and you can ground with either.

Sent from my iPhone
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Re: [AFMUG] Eltek Valere J series -48 or +48

[Josh Baird]

If you only need 300W of +48VDC load, it makes perfect sense.

On Tue, Nov 27, 2018 at 1:31 AM TJ Trout  wrote:

> Chuck,
>
> Are you sure the eltek's don't have the chassis ground bonded to the
> positive output ?
>
> So I'm assuming the complication here is that if you reverse the wires,
> when you try to power a +48v device, and it's negative input is bonded to
> chassis ground and you have a ground path between the two (like a metal
> rack) or possibly somehow through the AC ground/neutral you cause a direct
> short circuit?
>
> I see mentions of DC-DC converters, but I don't see the point of using a
> 300w RSD converter with a 2000W rectifier shelf?
>
>
>
> On Mon, Nov 26, 2018 at 2:57 PM  wrote:
>
>> It is 48.  Period.  You choose the reference if you want one.
>>
>> If you tie the + terminal to chassis ground then the – terminal is the
>> hot –48 VDC terminal.
>>
>> If you tie the – terminal to chassis ground then the + terminal is the
>> hot +48 VDC terminal.
>>
>> If you don’t tie either to chassis ground, then you will have to have a
>> common return bar that is on the opposite rail from your fuses and circuit
>> breakers.
>>
>> *From:* TJ Trout
>> *Sent:* Monday, November 26, 2018 3:40 PM
>> *To:* AnimalFarm Microwave Users Group
>> *Subject:* [AFMUG] Eltek Valere J series -48 or +48
>>
>> I'm looking at the Valere series and I can't seem determine if it's +48
>> or -48, seems like it's +48 but I thought all the telecom stuff was
>> positive ground.
>>
>> How do you go about powering negative ground loads from a positive ground
>> power source?
>>
>> I'm assuming you can leave out the neutral and isolate the chassis?
>>
>>
>>
>> --
>> --
>> AF mailing list
>> AF@af.afmug.com
>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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>> AF@af.afmug.com
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>>
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Re: [AFMUG] Eltek Valere J series -48 or +48

[Gino A. Villarini]

Chuck, can you quote:

Eltek Rectiverter Power Core 6 KVA 1ph ?


Gino Villarini
Founder/President
@gvillarini
t: 787.273.4143
m:
[https://image.ibb.co/ctQ7jU/aeronet-logo.png]   
[https://image.ibb.co/noQeyp/inc500.png]   
[https://image.ibb.co/e4pBB9/fb-logo.png]  
[https://image.ibb.co/nxuuW9/insta-logo.png] 
   
[https://image.ibb.co/jhSEW9/in-logo.png] 
 
[https://image.ibb.co/dqqq4U/tw-logo.png] 

[https://image.ibb.co/bAJcjU/yt-logo.png] 

www.aeronetpr.com | Metro Office Park #18 Suite 304 
Guaynabo, PR 00968
From: AF  on behalf of Chuck McCown 
Reply-To: AnimalFarm Microwave Users Group 
Date: Monday, November 26, 2018 at 6:59 PM
To: AnimalFarm Microwave Users Group 
Subject: Re: [AFMUG] Eltek Valere J series -48 or +48

I am an Eltek dealer.  Low volume but I can probably get you a decent price.

From: TJ Trout
Sent: Monday, November 26, 2018 3:40 PM
To: AnimalFarm Microwave Users Group
Subject: [AFMUG] Eltek Valere J series -48 or +48

I'm looking at the Valere series and I can't seem determine if it's +48 or -48, 
seems like it's +48 but I thought all the telecom stuff was positive ground.

How do you go about powering negative ground loads from a positive ground power 
source?

I'm assuming you can leave out the neutral and isolate the chassis?



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Re: [AFMUG] Eltek Valere J series -48 or +48

[Gino A. Villarini]

Its -48


Gino Villarini
Founder/President
@gvillarini
t: 787.273.4143
m:
[https://image.ibb.co/ctQ7jU/aeronet-logo.png]   
[https://image.ibb.co/noQeyp/inc500.png]   
[https://image.ibb.co/e4pBB9/fb-logo.png]  
[https://image.ibb.co/nxuuW9/insta-logo.png] 
   
[https://image.ibb.co/jhSEW9/in-logo.png] 
 
[https://image.ibb.co/dqqq4U/tw-logo.png] 

[https://image.ibb.co/bAJcjU/yt-logo.png] 

www.aeronetpr.com | Metro Office Park #18 Suite 304 
Guaynabo, PR 00968
From: AF  on behalf of TJ Trout 
Reply-To: AnimalFarm Microwave Users Group 
Date: Monday, November 26, 2018 at 6:42 PM
To: AnimalFarm Microwave Users Group 
Subject: [AFMUG] Eltek Valere J series -48 or +48

I'm looking at the Valere series and I can't seem determine if it's +48 or -48, 
seems like it's +48 but I thought all the telecom stuff was positive ground.

How do you go about powering negative ground loads from a positive ground power 
source?

I'm assuming you can leave out the neutral and isolate the chassis?


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