Specifications

14
7. PowerCenter Installation
A. Electrical System
The general electrical configuration for BWC XL.1
and hybrid system installations is shown in Figure
11. In most cases the loads will be AC (alternat-
ing current) and they will be supplied through a
DC-to-AC inverter.
Figure 11, Typical XL.1 System Configuration
Alternator
Rectifier
(on turbine)
DC Wire Run
(Tower &
Ground)
PowerCenter
PV Array
DC Source Center
(optional, used on
larger systems)
Battery Bank
AC Loads
Back-up Generator
or Utility
Inverter
(connected to
DC Source, if
available)
=
~
The PowerCenter has a limited current carrying
capacity so we recommend that you use a DC
Source Center whenever you have multiple XL.1
wind turbines. DC Source Centers are available
from Bergey Windpower and from other sources.
Additional Design Guidance:
1. If you have multiple XL.1 turbines and
PowerCenters, do not connect more than
one wind turbine to one PowerCenter.
2. Connect multiple PowerCenters to a DC
Source Center via the PowerCenter’s bat-
tery terminals.
3. Do not connect the PowerCenter to
another controller that could disconnect
the PowerCenter from the batteries. The
PowerCenter should not be disconnected
from the battery when there is input from
the wind turbine.
4. Do not connect the PowerCenter to the
batteries through diodes
B. Location
The PowerCenter must be installed indoors and
should be located relatively close to the battery
bank. Do not install the PowerCenter outdoors; it
is not waterproof.
C. Mounting:
The PowerCenter needs to be mounted vertically
to a wall, or other support structure, so that air can
pass unobstructed through the passive cooling
channel behind the enclosure. We recommend
setting the height of the LED’s at eye level if poss-
ible so that the system status lights will be easiest
to read.
The enclosure dimensions and mounting layout
for the PowerCenter are shown in Figure 12. The
PowerCenter should be mounted with four M4
(0.157” dia.) screws. We recommend the follow-
ing procedure:
Tools Required:
 Pencil
 Carpenters level
 Drill with ~ 2 mm or 0.09” dia. drill bit
 (4) M4, 1/8”, or 5/32” screws
 Screwdriver
Procedure:
Step 1:
Mark the mounting hole locations using the Po-
werCenter enclosure as the template. Use a car-
penters level to check the levelness of the enclo-
sure before marking the holes.
Step 2:
Drill small (~ 2.5 mm or 0.1 in diameter) pilot holes
for the mounting screws.
Step 3:
Screw the top two mounting fasteners into the wall
until ~ 6 mm (1/4”) of the shank extends out from
the wall.
Step 4:
Remove the PowerCenter cover and place the
PowerCenter enclosure on the two upper mount-
ing fasteners. Slide the enclosure down such that
the fasteners are placed at the top of the inverted
“T-slots”.