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Publication Title | Changes to the HEV MicroTurbine Power Supply Grounding

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Capstone

Subject: Affected:

Abstract:

Capstone Customer Service Toll Free 1-(877) 282-8966 www.capstoneturbine.com

SB0011

May, 1999

SERVICE BULLETIN

Changes to the HEV MicroTurbine Power Supply Grounding

AllHEVSystems

The auxiliary 12 Vdc supply must not be grounded through the Capstone 12 V power connection components.

Description: Grounding the aux. 12Vdc power circuits through the 12V power supply connection on the Capstone connection can result in ground currents through the Capstone system resulting in control board

failures.

Corrective Action:

1. Remove the connection from TB-1, Pin 2 to the negative terminal of the auxiliary 12Vdc source (battery). Only connect the +12Vdc of the Aux. 12Vdc to TB-1, Pin 1.

2. Connect a #18 AWG wire from the DPC threaded ground stud to TB-1, Pin 2. This will be the only wire connected to TB1, Pin 2 (See diagram on page 2).

This change will take affect immediately to prevent grounding problems. If you have any questions on this matter, please contact any Capstone Customer Service Representative.

This information is confidential and proprietary to Capstone. Neither this document nor the information contained herein shall be copied, disclosed to others, or used for any purposes other than the specific purpose for which this document was delivered.

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