[RE-wrenches] magnum question

Sat Nov 1 10:22:37 PDT 2014

Gary,

            Just wanted to take the time to say thanks for the follow-up.
I'm hoping other manufacturers will follow suit to let us know how issues
are resolved. Sometimes us off-grid installers feel awfully lonely out
here:).

            On a separate issue, please offer a paper manual option when it
comes to your Remote/routers. This is necessary so that we can record the
settings and not have to bring a laptop in to the remote locations were we
do our work. I understand that you're trying to go green and that you are
constantly refining your products, thus this requires a reprint and that is
expensive. The DVD is fine for a client that may never look at it but as
installers we need the hard copies. I'd be happy to pay an additional charge
for these as we don't need it for every system. Thanks for listening.

Christopher

PS still waiting on your version of a 48V grid-tie/battery backup inverter
(not AC-Coupling)

                                Chris Schaefer's

SolarWindFX

                    Tel/Fax 585-229-2083 or Cell 585-748-1870  

     5115 South Hill Road ~ Canandaigua New York 14424

www.solarandwindfx.com ~ E-mail: chris at solarandwindfx.com

Thomas Jefferson, the author of our great Constitution, once said,
"democracy" will cease to exist
when you take away from those who are willing to work and give to those who
would not."

-----Original Message-----
From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On
Behalf Of Baxter, Gary
Sent: Friday, October 31, 2014 18:44
To: RE-wrenches
Cc: Santos-Buch, Alan; Boatwright, Anthony
Subject: Re: [RE-wrenches] magnum question

Follow up with Jay,

We thought it might help others to post what we found with Jay's system.
This was a Magnum MS4024PAE model that is 120/240 split phase input and
output. We describe this unit as 2-2k units in series inside one unit with a
two winding transformer basically an autoformer. 

The issue Jay was having was a "Overtemp" fault when charging from generator
after an hour or so. The first tech suggested turning down the charge rate
to 70% which solved the issue but didn't answer the question of why the unit
was in "Overtemp". The first suspicion was there was 120v into the inverter
which will cause the transformer to run on half the windings and overheat at
full charger output. It is perfectly acceptable to input 120v to the MS-PAE
(either leg) and it will charge and the output will be 240v but the charge
rate should be reduced. The voltage measurement to the input terminals was
240v so that issue was not suspected anymore. 

What Jay found was one pole of the 240v breaker from the generator was bad.
What made it hard to troubleshoot and the reason for the post is that the
MS-PAE will accept 120 or 240 input but always convert to 240 output. When
measuring the input to a MS-PAE you should remove the wires from the
terminal block and take the readings on the wires. The sense transformer on
the inverter input will make the input look like 240v but no current on one
leg will overheat the transformer. With the wires removed the voltage
measurement will show there is no 240v available.

Gary

Gary Baxter

Product Manager

Magnum | Dimensions

2211 West Casino Rd.

Everett, WA. 98204

Office 425.353.8833 | Mobile 425.501.0289 | Fax. 425.353.8390

Please Note My New Email Address:

 <mailto:gbaxter at sensata.com> gbaxter at sensata.com |
<http://www.magnumenergy.com> www.magnumenergy.com

A Sensata Technologies Business Unit

-----Original Message-----

From: Baxter, Gary 

Sent: Thursday, October 23, 2014 9:50 PM

To: RE-wrenches

Subject: Re: [RE-wrenches] magnum question

Hi Jay,

Sorry you didn't get help. Let me know what you need and I will get you an
answer.

Gary Baxter

Product Manager

Magnum/Dimensions 

> On Oct 23, 2014, at 9:19 PM, jay peltz < <mailto:jay at asis.com>
jay at asis.com> wrote:

> 

> HI All,

> 

> Does anyone have a person at Magnum in engineering or higher up than tech
support.

> 

> I've got a problem with an inverter that tech support won't or can't help
with.

> 

> thanks

> 

> jay

> 

> peltz power

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