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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Technical Reference: Grid Connect Operation – Capstone Models C30 and C60/C65 Run This state is characterized by the system delivering minimum power while the output contactor remains closed. The turbine will operate with fuel at 49 krpm for up to one minute to warm up engine components and remain in the Run state after the warm up is complete. The following events occur: • Operating with fuel at 49 krpm (Model C60/C65) for up to one minute to warm up engine components • Minimal power may be exported based on differences in ambient temperature Load This state is characterized by engine acceleration to meet the user power demand. Control remains in the Load state until a fault occurs or a stop command is given. The following events occur: • Speed varies from 49 to 96 krpm to meet power demand TET nominally 671 °C (1240° F) at 49 krpm to 593 °C (1100° F) at 85 krpm and above for the Model C30 TET nominally 635 °C (1175° F) for full speed range for the Model C60/C65 Temperatures may be reduced with decreasing ambient temperature • Number of injectors used increases with power output • If Stand Alone equipped, performs battery equalization charge every 15-30 days Initiated only in allowed times programmed by user. Once charging starts, it cannot be stopped - this process is invisible to the user. Cooldown As the MicroTurbine shuts down, the system enters a cooldown period. A Start command can be provided during this period either manually or via the auto restart feature. Restart allows higher availability after faults by returning to the Load state without a complete shutdown of the engine rotating components. The following events occur: • Electrical fuel shutoff is closed so it is not producing any more fuel • Power production is reduced (heat in recuperator may result in power output while engine decelerates) • A purge of a liquid fuel system with air assist occurs to clear fuel out of the fuel lines through the injectors • The fuel solenoids are closed • Speed is reduced to Cooldown speed Cooldown at 45 krpm for Model C30 Cooldown at 50 krpm for Model C60/C65 • Cooldown speed provides airflow over engine components until TET reaches: 193 °C (380° F) for Model C30 399 °C (750° F) for Model C60/C65 410027 Rev F (February 2006) Page 9 of 23 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.PDF Image | TECH REF C30 Grid Connect Op
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