Stand Alone Operation – Capstone Model C30 and C60

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Stand Alone Operation – Capstone Model C30 and C60 ( stand-alone-operation-–-capstone-model-c30-and-c60 )

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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Technical Reference: Stand Alone Operation – Capstone Model C30 and C60 Equalization Charge NOTE Once an equalization charge has started, it will complete regardless of the day and hour of the permission set-up. The MicroTurbine will perform an equalization charge cycle periodically to maintain an equal charge in all battery cells. This equalization charge may be automated or commanded manually (charges to 100% state-of-charge) and may take up to four hours. Equalization charging may be disallowed during certain hours of certain days of the week to prevent interference with dispatch schedules. See the Model C30 Electrical Technical Reference (410000) and Model C60 Electrical Technical Reference (410001) for step load capability. The Equalization Charge submenu is configurable for each day of the week. Selecting Disable disallows the entire day. Default equates to all days active. If a charge is allowed to occur, the First OK Hour and Last OK Hour are programmed using a 24-hour clock. Once an equalization charge commences, it will run to completion. Times should be configured with the understanding that an equalization charge can take four hours. In Stand Alone mode, the software will automatically initiate an equalization charge based on watt-hours usage of the battery pack. For full time Stand Alone operation, this occurs approximately once per week. A small amount of power produced by the MicroTurbine is provided to the battery pack to bring it up to 100 percent state-of-charge. Note that this power is not available to output loads, and the user may program allowable times for this charge to take place. In Dual Mode configuration, the system will automatically initiate the equalization charge during the Grid Connect Load state every 7-30 days based on the Grid Batt Eq Chg days value. If an equalization charge is required, the system will initiate a battery wake up, perform the 4-hour charge, and then put the battery pack back into sleep mode. If a charge is not required, the system will put the battery into sleep mode after 15 minutes in the Grid Connect Load state. The default is that charging is allowed any time of the day. Days or times should be reduced to prevent charging from occurring during peak demand times. A minimum of one 4-hour window during MicroTurbine operating hours is required to maintain battery life. Perform the following steps to program the allowable times for equalization charging during certain times of the week: • CRMS: From the menu, select Settings > Battery Management, and toggle on the allowed days of the week . Then, select the first and last allowable hours for equalization charge. • Display panel: Navigate as follows - Battery Management > Equalization Charge submenu. The first screen provides for day of week choice, the submenu screen decides whether equalization charging is or is not allowed on that day. The second submenu establishes the beginning hour is allowed for that day. The third submenu establishes the ending hour that charging is allowed. Battery Management Parameter Description Parameter Value Default Equalization Charge Charge Allowed First Hour OK Last Hour OK Allows user to perform a battery equalization charge at selected intervals Selects equalization charging by day Selects first hour of charge Selects first hour of charge Mon – Sun 0 = Disable 1 = Enable 00 -23 00 -23 Mon Enable 00 23 (:59 implied) Page 18 of 22 410028-001 Rev. C (July 2004) This information is proprietary to Capstone Turbine Corporation. 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. Capstone reserves the right to change or modify without notice, the design, the product specifications, and/or the contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction.

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