[RE-wrenches] Fisher Paykal on a MAGNASINE

boB Gudgel boB at midnitesolar.com
Wed Jul 1 21:40:24 PDT 2009


Michael Welch wrote:
> According to a document I received from an F-P technician, here is 
> what it takes to run their washers on an inverter: I passed this 
> document on to the list late last year, so check your attachments 
> folder for
> Using 120V Alternate Energy Generation.doc
>
> Are There Existing Customers who are Successfully Running a Smart 
> Drive Autowasher From An Inverter Supply?
>
> There are many installations where Smart Drive Autowashers are 
> successfully operating on an inverter supply. In our experience if the 
> following technical criteria are met by an inverter then operation and 
> reliability should not be an issue:
>
> RMS Voltage: 120V +/- 10% (up to -20% may still work provided the pump 
> outlet hose is not too high i.e. pumping a high head of water)
> Frequency: 60 Hz +/- 5%
> Peak Voltage: 200V peak - / This is the major point!!!
> /Older style inverters can have an rms voltage inside specification 
> but do so by having short duration high voltage pulses. The Smart 
> Drive treats this high voltage pulse as a voltage transient and clamps 
> the voltage above 200V. The electronics are well rated to absorb this 
> clamp energy on a transient basis but not 120 times a second (60Hz) 
> continuously. If this continuous clamping occurs then it may lead to 
> premature failure of the Smart Drive electronics or the Inverter 
> electronics.
> Power Rating: 2kVA (2,000VA) minimum.

Normally Modified Square Wave inverters provide too LOW of a peak, and 
change with battery voltage. 200V peak would only occur
at a VERY high battery voltage for most MSW inverters you folks would 
normally use, like a DR etc.

boB




> While the Smart Drive only consumes about 650W of power maximum, the 
> VA rating can exceed 1kVA. Successful installations have a rating of 
> 2kVA min.
>
>
> Allan Sindelar wrote at 04:41 PM 7/1/2009:
>
>> According to others on this list, the sine wave Magnum won’t run one, 
>> so I would be very cautious.
>> Allan
>>
>> Allan Sindelar
>> Allan at positiveenergysolar.com <mailto:Allan at positiveenergysolar.com>
>> NABCEP Certified Photovoltaic Installer
>> EE98J Journeyman Electrician
>> Positive Energy, Inc.
>> 3201 Calle Marie
>> Santa Fe, New Mexico 87507
>> 505 424-1112
>> www.positiveenergysolar.com <http://www.positiveenergysolar.com>
>> ------------------------------------------------------------------------
>> *From:* re-wrenches-bounces at lists.re-wrenches.org [ 
>> mailto:re-wrenches-bounces at lists.re-wrenches.org] *On Behalf Of *Dana
>> *Sent:* Wednesday, July 01, 2009 5:20 PM
>> *To:* 'RE-wrenches'
>> *Subject:* [RE-wrenches] Fisher Paykal on a MAGNASINE
>>
>> Has anyone run a Fisher-Paykal washer on the Magna sine modified sine 
>> wave 1200 watt inverter? Good to do or not?
>>
>> Thanks
>>
>> Dana Orzel
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