[RE-wrenches] Hydro Diversion Controls

[David Katz]

William,
I always connect the hydro side of the diode to the diversion load with the contactor, so I don't pull the battery down while regulating.  The diversion load must draw enough current to pull the hydro voltage below the absorb voltage. Use ohms law to calculate the resistance.
David Katz

Sent from my HTC smartphone on the Now Network from Sprint!


----- Reply message -----
From: "William Miller" <william at millersolar.com>
To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
Subject: [RE-wrenches] Hydro Diversion Controls
Date: Wed, Nov 21, 2012 12:34 pm



Friends:

I have just two micro-hydro clients, too few to have dedicated as much time
as I should to educate myself.  I appreciate any help on these questions:

I need to rework a diversion control system.

1. I am going to use a mercury wetted relay driven by the Aux relay in an
FX inverter set to actuate on high battery to connect the DC Bus to the
diversion load.  Sound OK?

2. Can I connect the hydro to the DC Bus (via a diode) using a breaker?  I
need OCP but I don't want anyone to disconnect the breaker and risk over
speeding the water wheel.  I could label the breaker "Do not open."  I have
been using a fuse, but if it opens, it is likely to remain undetected for a
longer time.

Thank in advance.

William Miller

Miller Solar
Voice :805-438-5600
email: william at millersolar.com
http://millersolar.com
License No. C-10-773985

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