Re: [RE-wrenches] XW FET over-temp errors

[Maverick Brown]

I’ve replaced the fan a few times. Mouser.com or digikey will have a good 
replacement. You’ll need to splice the white fan connector on to the new fan. 
I’ll look in the mouser history for the brand and model I used last. 

Thank you,

Maverick


> On Mar 3, 2020, at 9:39 PM, Mac Lewis  wrote:
> 
> 
> Hi wrenches,
> 
> Does anyone know how to obtain a replacement cooling fan for a 5 yr old XW 
> 6048 inverter?  I suspect that the fan isn't functioning and the FET boards 
> are heating up, we keep seeing a shutdown when selling near peak.
> 
> I believe the Schneider part is 100-0639-01-01, but Im not seeing anything on 
> a quick search.
> 
> Thanks
> 
> -- 
> 
> 
> 
> Mac Lewis
> 
> "Yo solo sé que no sé nada." -Sócrates
> 
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[RE-wrenches] XW FET over-temp errors

[Mac Lewis]

Hi wrenches,

Does anyone know how to obtain a replacement cooling fan for a 5 yr old XW
6048 inverter?  I suspect that the fan isn't functioning and the FET boards
are heating up, we keep seeing a shutdown when selling near peak.

I believe the Schneider part is 100-0639-01-01, but Im not seeing anything
on a quick search.

Thanks

-- 



Mac Lewis

*"Yo solo sé que no sé nada." -Sócrates*
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Re: [RE-wrenches] Offgrid Generators?

[Chris Mason]

Ray,
Let me try to address some of those issues for you.
1) You can get the activation code before you take it to site, you just
need the serial number. Generac has a good warranty policy but they need to
know where the generator is and when it is installed to be able to provide
that.
2) An electrician can connect the wires but you would not believe the
installations we have seen, done by licensed electricians. We have a dealer
forum where installers post pictures of installations they find, and the
mistakes are criminal and dangerous. I once found a propane 20KW generator
running side a shipping container, doors closed.
3) Generac does not do direct support for generators, they require
customers call a dealer. The dealer can then call Generac, and often does.
I can't even call them if my certification expires.
4) If the generator is under warranty, you may not pay anything, depending
on the coverage. Generac is offering up to ten year warranties. But once it
is out of warranty, you will have to pay. Dealers don't work for free. The
average electrician won't be able to diagnose problems reliably on these
generators.
The residential air cooled generators are very reliable and rarely have
problems if well maintained. Techs should be traveling with common parts, I
bring a controller and a few other parts so I can solve the problem in one
go.
Blown engines are rare, but they do happen. Generally in the first few
hours, so under full warranty and replacement is generally done at
Generac's expense.
If you do have issues, contact me and I will try to help you.










On Fri, Feb 28, 2020 at 4:41 PM Ray  wrote:

> Some of the issues have been Generac not providing a simple wiring
> schematic, nor simply labeling the 2 start wires.  2nd is requiring either
> internet connection or a call in to get the start code.  Both have been
> very problematic in remote locations with no phone service.  Totally
> unnecessary.  We don't need a Generac tech just to connect wires, I'm the
> licensed electrician.  Last time I called Generac, (control error not
> listed in the manual) they insisted I needed to call in a service tech, and
> offered zero trouble shooting.  I fixed the problem by pulling the fuse and
> resetting the controller.  3rd, service requires a long expensive trip by
> the service tech, who then diagnoses the problem, has to order the parts
> and return weeks later. This means every issue takes 2 round trips to
> resolve.  If its a bigger issue, it requires a truck lift to haul the 500
> lb unit in to the shop.  We're hearing $500 just to get the generator to
> the shop, then another $500 to reinstall it after.
>
> Failures have included several catastrophic engine failures, blowing oil
> every where, some of these have been in the first few hundred hours. Lots
> of control issues, one recently had voltage that varied from 90 to 130, 45
> to 70 Hz, and the inverter wouldn't even connect to it.
>
> I quit selling generators a long time ago, because I didn't want the
> service liability.  I'm not a mechanic, and I don't want to be.  I do
> however, need a generator I can recommend in good faith.  The Ecogen has
> made us look pretty bad.  Glad I didn't sell them, but then I've seen some
> large water cooled unit that worked well.
>
> Ray Walters
> Remote Solar
> 303 505-8760
>
> On 2/28/20 5:14 AM, Chris Mason wrote:
>
> Ray,
> I'm a Generac dealer. Why are you having support problems? Generac has a
> large dealer network, if the unit is under warranty you should have no
> problem getting it fixed. Did you buy through a dealer and have them
> install it? Why are the services expensive?
>
> What failures are you seeing?
>
> There is a hole in the market for products in this application. Virtually
> no-one makes an affordable ~10KW diesel enclosed 2 wire start 1,800 rpm
> reliable diesel generator. I once ordered, on spec, a 9KW Perkins engine
> liquid cooled enclosed diesel from a factory in China I deal with. I sold
> it to a customer that ran it 18 hours a day on 100% load, to power his
> restaurant refrigeration outside service hours. It lasted him years, it
> must have thousands of hours on it.
> I think the big problem in the US is getting permits for diesel generators.
>
>
>
> On Thu, Feb 27, 2020 at 6:25 PM Ray  wrote:
>
>> I know we have covered this before, but I just continue to be
>> disappointed with the Generac Ecogen.  Very high failure rate, and
>> support is poor.  Service requires expensive on site service. Also the
>> no load AC draw and programming setup is just not off grid ready at
>> all.  I'm still not seeing any other great choices, though.  Here's some
>> other possibilities:
>>
>> 1) Quality portable, like the Honda EU 7000i or Northstar with Honda
>> motor.  Not the best choice especially for autostart, no propane, but at
>> least they can take it in to the shop if it goes down.
>>
>> 2) Kubota (or MQ) diesel. expensive, and possible cold weather start
>> issues?
>>
>> 3) 20+ kW water

[RE-wrenches] OK, so what iwould happen if I do this...

[don]

You wrote that you would connect the Exeltech to just one of the service phases. But most GT inverters are 240 and require both phases. Is yours different? You did not mention which model it is. Also, as Kent Osterberg mentioned, the Exeltech will not charge its batteries from the AC output. Your scheme with the PLC controlling an SCR leaves unaddressed how any charge current gets directed into the batteries to allegedly raise their voltage. Is there a charger somewhere in this scheme?You still need some way to charge batteries from solar. How about connecting a charge controller to some of the solar panels?Don BarchEnergy Solar


 Original Message 
Subject: RE-wrenches Digest, Vol 13, Issue 59
From: re-wrenches-requ...@lists.re-wrenches.org
Date: Sun, March 01, 2020 2:19 pm
To: re-wrenches@lists.re-wrenches.org

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Today's Topics:

   1. OK, so what iwould happen if I do this... (Mark Frye)
   2. Re: OK, so what iwould happen if I do this... (frenergy)
   3. Re: OK, so what iwould happen if I do this... (Kent Osterberg)
   4. Re: OK, so what iwould happen if I do this... (Jerry Shafer)


--

Message: 1
Date: Sat, 29 Feb 2020 15:27:32 -0800
From: Mark Frye 
To: RE-wrenches 
Subject: [RE-wrenches] OK, so what iwould happen if I do this...
Message-ID: <93731c38-40b5-7c63-1d74-a879fbdd9...@berkeleysolar.com>
Content-Type: text/plain; charset=utf-8; format=flowed

I have 2kw of grid tied PV on my house.

Suppose I:

- Open the main breaker to disconnect from the grid

- I open the PV breaker

- I connect a small good quality inverter like an Exeltech XP 500 to one 
of the phases of the service (120 VAC)

- I put a small battery pack, 100 AH at 24 VDC on the inverter

OK so far, I could run some small loads for a relatively short period of 
time before the batteries get low

-I have a PLC with an AD input and DA output. On the input I measure the 
battery voltage, on the output I control a SCR. The SCR controls a 2kw 
immersion heater sitting in a big bucket of water. The PLC has a scan 
time of 2 mS and I program it to increase the duty cycle of the SCR as 
voltage of the battery rises above 24 VDC.

OK so far nothing has really changed from above.

- I close the PV breaker, the GT inverters see the battery inverter, 
sync and connect after five minutes.

Voila, I can run house loads from 0 to 2kw with my existing GT PV with 
the balance of energy dumped as needed to the immersion heater.

Right?

Mark Frye



--

Message: 2
Date: Sun, 1 Mar 2020 06:26:27 -0800
From: frenergy 
To: re-wrenches@lists.re-wrenches.org
Subject: Re: [RE-wrenches] OK, so what iwould happen if I do this...
Message-ID: 
Content-Type: text/plain; charset=utf-8; format=flowed

Mark,

 ??? ??? ??? OR, you change-out your inverter to an SMA with Secure 
Power Supply and during grid power outage, while there is some sun on 
the panels, you would have up to 2KW of 120VAC power on the SPS circuit 
by just flipping a switch. We usually install a 4X outdoor box with a 
120 VAC outlet ganged with a switch right under the inverter and let the 
customer run the power to the : frig, lights, battery charger, TV or 
whatever during an outage, though some romex could be run to close to 
the frig.

Bill

Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
www.frenergy.net

On 2/29/2020 3:27 PM, Mark Frye wrote:
> I have 2kw of grid tied PV on my house.
>
> Suppose I:
>
> - Open the main breaker to disconnect from the grid
>
> - I open the PV breaker
>
> - I connect a small good quality inverter like an Exeltech XP 500 to 
> one of the phases of the service (120 VAC)
>
> - I put a small battery pack, 100 AH at 24 VDC on the inverter
>
> OK so far, I could run some small loads for a relatively short period 
> of time before the batteries get low
>
> -I have a PLC with an AD input and DA output. On the input I measure 
> the battery voltage, on the output I control a SCR. The SCR controls a 
> 2kw immersion heater sitting in a big bucket of water. The PLC has a 
> scan time of 2 mS and I pr