Owner`s manual

If there is no load at all on the system, then the turbine will be brought to a very slow speed, approximate-

ly 20 RPM, and the solar panels will be disconnected completely.

D. PowerCenter Controller

The basic electrical schematic for the BWC EXCEL 1 is shown in Figure 5. The EXCEL 1’s alternator

produces three-phase alternating current (AC) that varies in voltage and frequency with the rotor speed.

The AC power is rectified to direct current (DC) power by a rectifier module inside the nacelle. Thus, the

wire run from the wind turbine to the PowerCenter is DC.

Alternator

Rectifier

(on turbine)

DC Wire Run

PowerCenter

Optional Dump Load

Battery Bank

Optional

Solar

Array

Figure 5: EXCEL 1 Basic Electrical Schematic

The PowerCenter for the EXCEL 1 has two sets of color-coded light-emitting-diodes (LED’s) for System

Status and Battery Bank Status.

System Status Lights:

Solar Power (green): Lights up when the optional solar panel(s) are charging the batteries.

Extra Load (red): Lights up when the optional auxiliary or dump load is activated as the batteries ap-

proach full charge. When the red LED is lit, the dump load will be heating.

Wind Power (green): Lights up when the EXCEL 1 wind turbine is charging the batteries. A blinking

green LED indicates that the low wind speed performance optimizing circuitry (low end boost) is operat-

ing.

Slow Mode (yellow): Blinks slowly to indicate that the turbine is being operated slowly to prevent over-

charge of the batteries, or because Slow Mode has been manually selected. If pressing the mode selec-

tor button has manually stopped the turbine, this LED will blink rapidly, the turbine may still be spinning,

but will be stopped as soon as possible. In “Blown Fuse Mode” this LED blinks every second, the same

frequency as the Wind Power LED.

Battery Bank Status Lights:

Battery bank charge status is shown with ten colored LED’s, which act like a fuel gage for your remote

power system. This gage, however, is inexact and it is intended to provide only a general indication of

the energy reserves available in the system. The following table shows the voltage indicated by the high-

est lit LED and its approximate relationship to the battery capacity available.