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CHAPTER 4 Capstone OPERATING MODES UCB Battery C200 microturbine systems utilize a separate battery located in the Communications Bay for remote system battery wake-up functionality. The +12 VDC battery is recharged automatically when the microturbine senses a low state-of-charge. System Sleep Mode The C200 microturbine provides a Sleep Mode to conserve battery power during prolonged periods of inactivity. This reduction in battery draw can significantly extend the microturbine battery charge. Sleep Mode inactivity time can be adjusted from 0.1 to 23.9 hours. If the battery isolation switch is set to ON, and the display panel is dark, the system is most likely in Sleep Mode. Stand Alone Operation Once the system has been properly wired to its loads and any external control wiring has been established, a Capstone Authorized Service Provider is required to complete the commissioning procedure and set protective relay settings. The end user can then refer to the C200 User Manual (400008) for proper operation and maintenance of the system. Dual Mode Capstone uses the term Dual Mode to describe the ability to operate in either Grid Connect or Stand Alone modes, and to be able to automatically switch between these operating modes. It is also the microturbine system designation for a version C200 which has this capability. By definition, a Dual Mode microturbine system includes the batteries and associated hardware to be able to operate in Stand Alone mode. Sometimes a Dual Mode version is used for a purely Stand Alone application (for example remote power that will never be connected to a utility grid). In this case, the Dual Mode features described here will not be used, and only the Stand Alone operation description above will apply. For many applications, however, the system is intended to operate in Grid Connect mode most of the time, and transition to a Stand Alone mode when the utility grid experiences a fault. Configuring Dual Mode Operation As described in the Grid Connect and Stand Alone sections above, the microturbine must be told what mode to operate in. This requires both hard wired connections in the User Connection Bay, and software commands from the front panel display or through one of the serial communications ports using a PC with CRMS. To operate in Dual Mode, the following needs to be done: Set the System “Power Connect” mode to “Dual Mode” using the Display or using a PC with CRMS. Provide external control connections to the Stand Alone enable and Grid Connect enable inputs in the User Connection Bay. Refer to Chapter 10: Communications in this document for details on pin connections. Once the system is configured to act in Dual Mode, activating the Stand Alone or Grid Connect inputs will manually switch between Grid Connect and Stand Alone operating modes. Care 410066 Rev C (June 2009) 4-6 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. NOTEPDF Image | CAPSTONE C200 MICROTURBINE TECHNICAL REFERENCE
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