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 Protective Relay Settings Protective Relay settings establish voltage and frequency operating limits and associated fault protection for the MicroTurbine. Voltage and frequency setpoints may be programmed as well as associated fault protection limits. These adjustments are provided to protect common loads by disabling power production during undesired transient conditions. The settings are adjustable to allow the user to narrow or restrict the operating envelope. Protective relay settings are stored in EEPROM non-volatile memory and are not subject to power interruptions. When a protective function initiates a shutdown, the following occurs: 1) Output power flow ceases within 100 msec. 2) The power output contactor is opened within 100 msec, disabling the MicroTurbine power output from the local load. 3) Fuel flow to the MicroTurbine stops, and 4) A warm shutdown ensues, during which control power is supplied from the MicroTurbine generator as it slows down. The warm shutdown lasts 1-2 minutes before the rotor is stopped. Protective relay settings can be configured from the display panel or CRMS. In CRMS, from the menu, select: Settings > Stand Alone Voltage and Frequency Settings. In the display panel, navigate to the Stand Alone menu and select settings (see tables below). Operating Voltage • CRMS: From the menu, select Settings > Stand Alone Voltage and Frequency Settings, and enter the desired operating voltage in the Voltage VRMS field. • Display panel: Navigate as follows - Stand Alone > Voltage, and enter the desired operating voltage. Voltage Sets the operating voltage. 150 – 480 VRMS 480 Under Voltage The system will initiate a shut down if the voltage drops below this setting for a user-selected timer value. The timer value establishes the period for any phase voltage to fall below the Under Voltage limit set point. NOTE Below 376V, MicroTurbine power output is limited based on current limits of the electronics. Refer to the Model C30 and Model C60 Electrical Technical Reference documents for details (410000 and 410001). Stand Alone Menu Parameter Description Parameter Value Default • • CRMS: From the menu, select Settings > Stand Alone Voltage and Frequency Settings, and enter the desired Under Voltage value. Display panel: Navigate as follows - Stand Alone > Under Voltage. Stand Alone Menu Parameter Description Parameter Value Default Under Voltage Sets under voltage limit for shutdown if operating voltage drops below this value. 0 – 480 VRMS 0.00 – 10.00 sec 428 1.9 Page 19 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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