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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Technical Reference: Grid Connect Operation–Capstone Models C30 and C65 5.11. Run The system stays in this the state until the engine is fully warmed up and the load command is set by the user. The following events occur: • The microturbine operates with fuel at 45,000 rpm for up to one minute for C30 or two minutes for C65 to warm up engine components. • The system may export minimal power, which varies depending on differences in ambient temperature. 5.12. Load In this state the engine accelerates 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 45,000 to 96,000 rpm to meet power demand. o TET nominally 671 °C (1240 °F) at 45,000 rpm to 593 °C (1100 °F) at 85,000 rpm and above for the Model C30. o TETnominally635°C(1175°F)forfullspeedrangefortheModelC65. o Temperaturesmaybereducedwithdecreasingambienttemperature. • Number of injectors used increases with power output. • If Stand Alone equipped, system performs battery equalization charge every 7-30 days. o Initiated only in allowed times programmed by user. Once charging starts, it cannot be stopped - this process is invisible to the user. 5.13. 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. Cooldown allows return to the Load state without a complete shutdown of the engine rotating components upon restart. The following events occur: • The fuel shutoff closes to stop fuel injection. • Power output is reduced (heat in recuperator may result in power output while engine decelerates). • In a liquid fuel system, fuel lines and injectors are purged. • The fuel solenoids are closed. • Speed is reduced to cooldown speed: o Cooldownat45,000rpmforModelC30. o Cooldownat50,000rpmforModelC65. 410027 Rev G (April 2013) Page 27 of 32 Capstone reserves the right to change or modify, without notice, the design, specifications, and/or contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction.PDF Image | Technical Reference Grid Connect Operation – Capstone Model C30 and C65
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