Powercenter Installation - Bergey 24 VDC B Owner's Manual

Step 9:
Check the XL.1 wind turbine carefully to make
sure that the installation is complete. We recom-
mend the following checklist:
!"
Blade fasteners are secure and prop-
erly torqued
!"
Blade tips are evenly spaced
!"
Spinner is secure
!"
Tail fin is secure
!"
Tail pivot pin is locked in place with
both cotter pins and washers.
!"
Tower adapter bolts are secure
!"
Wiring polarity is tested and marked
Step 10:
Dynamically brake the XL.1's alternator by con-
necting the positive (+) and negative (-) output
leads together. The resulting short-circuit will
keep the rotor from spinning during tower raising.
Step 11:
Raise the tower following the procedures outlined
by the tower supplier. Please make safety your
top priority.
Non-tilting Towers:
such as a fixed guyed tower or a self-supporting
pole type tower, there are two general approaches
that can be used: 1) assemble the tower and tur-
bine together on the ground and then use a light-
duty crane to set the tower in place, or 2) erect the
tower and then lift the wind turbine to the top with
either a light-duty crane or a gin-pole.
A gin-pole, in this case, is a tower assembly tool
that attaches to the tower and provides an arm
with a pulley so that parts can be hoisted above
the top of the tower. Gin-poles are used by pro-
fessional tower erectors and we do not recom-
mend their use by non-professionals. We know of
at least one homeowner who died approximately
fifteen years ago while improperly using a gin-pole
to install a small wind turbine (though not a Ber-
gey turbine).
Where possible we recommend the first general
procedure because it allows work to be done
more safely, on the ground. In this case please
follow the general procedure for turbine assembly
provided in the preceding section. When raising
the tower you must lift the tower, not the XL.1
On a non-tilting tower,
wind turbine. The XL.1 cannot support the weight
of the tower.
For customers installing a BWC XL.1 on an exist-
ing fixed tower we recommend that you use a
crane to lower the tower so that you can attach
the turbine on the ground. Alternatively, we rec-
ommend you use a bucket-truck, like the type
used by utility linemen. Check with local sign
companies because they often offer bucket-truck
services at reasonable hourly rates. If neither of
these approaches is possible then we recommend
that you engage the services of professional wind
turbine or tower erectors to install your wind tur-
bine.
The procedures for hoisting the BWC XL.1 using a
gin-pole are available from Bergey Windpower.
Please contact Customer Service for assistance.

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.
DC Wire Run
(Tower &
Alternator
Ground)
Rectifier
(on turbine)
DC Source Center
(optional, used on
larger systems)
Battery Bank
Back-up Generator
or Utility
AC Loads
Figure 11, Typical XL.1 System Configuration
PV Array
PowerCenter
Inverter
= (connected to
~
DC Source, if
available)
10