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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 Stand By The state is characterized by the utility providing power to the MicroTurbine controller, while the MicroTurbine is in an idle state waiting for a Start command. Prepare to Start When a Start command is issued, the software transitions to the “Prepare to Start” state. This state is • • • • • characterized by the following events: Turn on power controller fans Verify utility voltage Close output contactor bringing DC bus voltage to 760V Check that communication with the fuel device has been established (Liquid fuel only) Liquid fuel drain opens if TET < 149° C (300° F) to remove any fuel remaining in the recuperator from prior start attempts (Liquid fuel vaporizes > 300° F) Lift Off This state is characterized by engine rotation - voltage and current are applied to the permanent magnet generator to provide torque for rotating the engine components. • Generator speeds up to 25 krpm (Model C30) • Generator speeds up to 20 krpm (Model C60/C65) Light Off This state is characterized by the air-fuel mixture combustion. The following events occur: • (Liquid fuel only) Liquid fuel drain closes for operation • Turn on Intra A power - controls fuel shut off device and solenoids which allow fuel flow into the system. Turn on Intra C power for RFC • Turn fuel devices on Includes air-assist device for liquid fuel systems • Power is applied to the igniter through the spark exciter solenoid • Enable fuel shutoff and injector solenoids • Increase fuel flow with the igniter on until an increase in TET is detected. If this increase is not detected within 30 seconds, a 6006 “Fail to Light” fault is declared. Accel This state is characterized by ramped generator acceleration. The following events occur: • Turn off spark exciter solenoid/igniter • Ramp speed/fuel flow to maintain combustion while raising generator speed to 49 krpm 410027 Rev F (February 2006) Page 8 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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