Installation manual

6.6. Diagrams of wiring with MPPT controllers

The drawings below illustrate the minimum installation requirements for PowerSpout turbines

connected to MPPT controllers. These drawings show both ungrounded and a negative

ground battery installation. Each component and its selection criteria are discussed in

section 6.8.

The diagrams that follow are indicative only, always check with your local installer that they

meet the rules in your country.

In some of the diagrams there are diversion loads which harvest surplus energy beyond

what the batteries need to recharge (see 5.8 for more details). These loads can be for water

or air, they can be DC or AC, operated by PWM charge controllers, by relays connected to

an AUX output on the MPPT controller or by MPPT controllers that do not require external

relay like the Midnite Classic "KID".

Solid state relays (SSRs) are ideal for this job as they are silent and can operate rapidly

without wearing out. We advise the following high quality SSRs mounted on a suitable heat

sink and enclosure. A D1D40 can be shipped with your turbine order as required.

 <100 VDC Crydom D1D40 for PDF click here

 <200 VDC Crydom D2D40 for PDF click here

Please note that all wiring diagrams presented show a single operation point for emergency

system shutdown, this may not be a legal requirement but is considered good practice in

some countries. There are many ways to wire a system, different laws, different training and

the preferences of experienced local installers means you rarely get consensus on such

matters.

Please note the following wiring diagrams (for systems that include MPPT regulators) show

battery string fuses combined in a 3 way HRC holder. All jurisdictions require a battery fuse

but may not require a fuse on each battery string.