[RE-wrenches] Using a Midnite Classic for Hydro

[Dan Tittmann]

 would try contacting Deric @
http://www.homehydro.com/
he likely will be able to help you.
*hipower at asis.com <hipower at asis.com>*

Daniel Tittmann
CTO
Greenwired
www.greenwired.com
daniel at greenwired.com
707-923-2001 (office)
707-206-5088 (Cell)

On Thu, Mar 19, 2015 at 11:26 AM, Windsine Inc. <windsine at gmail.com> wrote:

> You could use a triac to feed AC from turbine directly to the dump load
> just before HyperVOC using the Aux relay in classic to fire the Triac. Then
> program the Aux logic to revert to normal when turbine voltage/RPM drops
> from dump load loading.
>
> Kinda like an Aux triggered bypass circuit
>
> Roy Rakobitsch
> NABCEP Certified Small Wind Installer®
> NABCEP Certified Solar PV Installer®
> NYSERDA eligible Small Wind installer
> Certified Advanced Tower Climbing, Safety & Rescue
> Wind/PV Design Engineer
> Windsine LLC
> 631-514-4166
> www.windsine.org
>
>
> On Thu, Mar 19, 2015 at 11:53 AM, Jeff Oldham <starpower4u at juno.com>
> wrote:
>
>> Finding this application quite frustrating - Harris 120Vdc 1kW turbine,
>> Classic 250, 48V batt., 1200W load dump. The manual downloaded just before
>> purchase stated: "This mode will NOT go to resting even when the input has
>> been disconnected and will always stay awake so the turbine has the least
>> chance of over-spinning." It now seems that this is not the case and this
>> sentence is no longer in the manual. My installer cannot get Midnite to
>> confirm one way or the other and they have been guessing for over a month
>> on how to keep the CC from going into RESTING that open circuits the hydro
>> and puts the CC into hyperVOC at 253V and will never reconnect. To
>> complicate things there is also ~4kW of PV on FM60's, when they drive up
>> batt V. to above what the Classic wants it drops into RESTING and back into
>> HyperVoc. Midnite has been very responsive and have suggested every
>> possible setting and combination and my installer has made the 3 hour RT
>> drive far too many times to only find the most recent "suggestion to try"
>> another approach not working. INSOMNIA does not do as the name implies and
>> still allows the CC to step out if external charging elevates the V above
>> what the Classic wants. i.e. FM60 in Bulk, Absorb or EQ. when the Classic
>> wants to Float.
>>
>> I fully realize that the Clipper will deal with this for a considerable
>> amount of money, but I've heard of several folks using a Classic or Outback
>> w/o a Clipper to deal with turbines w/o allowing freewheeling and runaway
>> VOC. If the turbine is not dropped by the Classic the VOC will never exceed
>> 120Vdc. Is there anyone of you out there that knows:
>>
>> 1) Is there a way to keep a Classic from ever moving into RESTING, a true
>> INSOMNIA? If it will not do as originally stated in the manual I need
>> someone to step up and say so, so we can stop guessing and wasting time.
>> 2) If so what is the secret, please?
>>
>> I really like all of Midnite's products and they are better than most
>> with reasonable prices, support has always been 1st rate. This application
>> oddly seems to have all of us at a loss pulling our hair out and losing
>> money.
>>
>> With much appreciation for all input.
>>
>>
>> From the Solar, Wind and Hydro powered office of Jeff Oldham/Regenerative
>> SOLutions
>>
>>
>> ____________________________________________________________
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