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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Technical Reference: Stand Alone Operation – Capstone Model C30 and C60 Cooldown After a fuel fault or the completion of recharge, the system enters the Cooldown state. The following events occur: • The output contactor is opened • Electrical fuel shutoff and fuel solenoids are closed so fuel no longer flows • A purge of a liquid fuel system with air assist occurs to clear fuel out of the fuel lines through the injectors (if required) • Intra A power is turned off • Speed is reduced to Cooldown speed # Cooldown at 45 krpm (Model C30) # Cooldown at 50 krpm (Model C60) • Operate at Cooldown speed providing airflow over engine components until TET reaches 193° C (380° F) for the C30 and 399° C (750° F) for C60. # A timed shutdown occurs if a 3004 “BOTH TET” fault occurs Shutdown When the Cooldown TET temperatures are reached, the software transitions to the Shutdown state. The following events occur: • Stop generator • Turn off fans • Return to Standby conditions Warmdown This state is characterized by a system fault or abnormal user shutdown. The output and battery contactors are opened immediately and therefore battery power is not available to support Cooldown. The dump valve is pulsed to control speed - allowing airflow for cooling, while preventing engine over speed conditions. As heat is removed from the recuperator, the engine will coast to a stop. The following events occur: • Power production is ceased # Output and battery contactor are opened • The fuel solenoids are closed # Intra A power is off # Intra C power is off (RFC) • Energy produced while the engine decelerates is dissipated to the brake resistor • Enter fault state at 427° C (800° F) TET 410028-001 Rev. C (July 2004) Page 11 of 22 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 | Stand Alone Operation – Capstone Model C30 and C60
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