[RE-wrenches] XW Temp sensor

[Mark.Edmunds at schneider-electric.com]

Hi Mark, 

We have stock of them here... 

Part # 808-0232-01 
call, 866-519-1470 to order. 

Cheers, 

Mark
_____________________________________________________________________________________ 


Mark Edmunds, P.Eng.  |   Schneider Electric   |  Renewable Energies 
Business  |   CANADA  |   Director - Advanced Engineering 
Phone: +1-604-422-2609  |   Fax: +1-604-420-1591  |   Mobile: 
+1-604-613-3285 
Email: mark.edmunds at schneider-electric.com  |   Site: 
www.schneider-electric.com/renewable-energies   |   Address: 8999 Nelson 
Way, Burnaby, BC, V5A 4B5, Canada 

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From:
"Mark Dickson" <mark at oasismontana.com>
To:
"'RE-wrenches'" <re-wrenches at lists.re-wrenches.org>
Date:
03/02/2011 08:29 AM
Subject:
[RE-wrenches]  XW Temp sensor
Sent by:
re-wrenches-bounces at lists.re-wrenches.org



Does anybody happen to have a temp sensor for a Xantrex XW inverter?  This 
is the type that bolts onto the negative battery terminal.  I am not sure 
but I think the Magnum temp sensor may work as well.  We have been trying 
for weeks to track one down for a customer from our distributors and 
Schneider?everyone says they have it but they don?t. . .
 
If so, shoot me a message off list and I will take it.  Used is fine. . .
 
Best regards,
 
Mark Dickson,
NABCEP Certified Solar PV Installer ?
Oasis Montana Inc.
 
 

From: re-wrenches-bounces at lists.re-wrenches.org [
mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Maverick 
Brown [Maverick Solar]
Sent: Tuesday, March 01, 2011 6:58 PM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] Home Brew Frequency Switch
 
"I have considered using a drop out contactor to isolate the inverters 
from the generator following a loss of line voltage."
 
I suggest that method above as the best. Generators can change frequencies 
under load and other conditions, etc. so there would not be such a precise 
control.
 
Line voltage coil relays are also cheaper and easier to get as compared to 
frequency controls.
 
The voltage drop out contactor might be easier to implement using the KISS 
method.
 
Good Luck!
 
Maverick
 

From: re-wrenches-bounces at lists.re-wrenches.org [
mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Mark Frye
Sent: Tuesday, March 01, 2011 11:20 AM
To: 'RE-wrenches'
Subject: [RE-wrenches] Home Brew Frequency Switch
Folks, 
I am back on the project where I want to install grid tied inverters 
(Enphase) on a feeder located downstream of a generator and ATS.
I have considered using a drop out contactor to isolate the inverters from 
the generator following a loss of line voltage.
As an alternative, how well might it work to reset the generator frequency 
so that it is outside the inverter range? In this way the inverter would 
always see the generator as "bad" energy and therefore would never connect 
to the generator, only the utility.
The nominal frequency range for the inverter is 59.3 to 60.5. 
What is the effect on the loads in the household if the generator 
frequency is adjusted to say 58 or 62 hertz? Would the higher or lower 
number be better? Would this fry everything in the house? I can't see that 
making a relatively small change like this would effect the overall 
impedance such that a problem with current capacities would be a problem. 
It seems like the frequency would be more of a problem for some devices.
Anyone have experience with deliberately adjusting generator frequency 
away from 60 hertz as described above? 
  
Mark Frye 
Berkeley Solar Electric Systems 
303 Redbud Way 
Nevada City,  CA 95959 
(530) 401-8024 
www.berkeleysolar.com  

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