Owner`s manual

How to Avoid the 6 Most Common Mistakes When Installing an EXCEL 1

1. DO NOT use the PowerCenter box lugs to connect wiring to the turbine. There is not

enough space for them, so they will rub the tower and eventually develop a short circuit. Use

crimp-type ring lugs.

2. DO use the built-in polarity checker when connecting the battery leads to the PowerCent-

er. Connect either battery lead to the Neg. (-) battery terminal on the PowerCenter, and then

touch the other lead to the Polarity Test Point. A green LED is good, a red LED shows that the

polarity is reversed. Do Not connect your test wire to the Pos. (+) terminal. Use the same proce-

dure when connecting PV to the PowerCenter. Please note that the Neg. (-) Battery terminal is

on the LEFT side, while the Turb. Neg. (-) terminal is in the RIGHT side.

3. DO NOT install a circuit breaker between the PowerCenter and the battery bank or DC bus.

The original PowerCenter has a circuit breaker for the wind turbine and the new PowerCenter has

internal fusing. Using a circuit breaker on the output of the PowerCenter can allow the Power-

Center to be open-circuited under high output condition, which can damage the system. If you

are using a Trace Power Panel, Do Not connect the wind turbine to the PV Array Disconnects in

the DC Disconnect Box. Do connect the Bergey PowerCenter to the “top” of one of the Battery

Disconnects (Pos.) and the Grounding Block (Neg.).

4. DO NOT install the wind turbine close to a steep slope or cliff. If the wind can blow up at an

angle as it hits the wind turbine the furling will be hampered and the turbine will experience ex-

cessive loads and vibration. This is most important from the prevailing wind direction. Try to

keep the tower at least two tower heights back from steep slopes.

5. DO use thimbles on all guy wires and position the lower malleable clip close to the thimble

so that the guy wire “captures” the thimble securely. Not using thimbles or not securing

them can lead to guy failure and tower collapse. Thimbles are not required on knuckle-end an-

chors, such as double-eye and triple-eye anchors.

6. DO follow the recommended wire sizes for your wire run from the wind turbine to the

PowerCenter. With the EXCEL 1 oversizing the wire is a bad thing because it will cause exces-

sively high currents during high winds. Normally, over sizing wire is a good thing – but not in this

case.

Use

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Not

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