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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Application Guide: Dual Mode Fast Transfer Application Guide Dual Mode Functionality When the Capstone C60/C65 MicroTurbine includes the Dual Mode feature, it is capable of providing power either connected to a Utility grid (Grid Connect mode) or without presence of a Utility voltage (Stand Alone mode). Since the operating characteristics between these two modes are different, the MicroTurbine must be told which mode to be in. The User Connection Bay (UCB) terminal J12 has two hardware interfaces to enable Grid Connect (GA Enable - pin 2) or Stand Alone operation (SA Enable - pin 3). If the user wants to operate in only one of these modes, a hardware jumper must be connected from pin 2 or 3 to ground to enable the desired mode, and the desired mode must be selected under “Power Connect” on the MicroTurbine display or CRMS software. Alternatively, the MicroTurbine can be set up for automatic transition between these two modes by wiring control logic between the two mode-enable inputs and ground. The MicroTurbine must then be set for Dual Mode operation in the “Power Connect” menu. Fast Transfer only applies when the MicroTurbine is set to Dual Mode operation, and the mode-enable inputs are properly wired and controlled. Note that “Active” is defined for these mode-enable inputs as being connected to ground (or “Low”). Additionally, the Start/Stop input to the MicroTurbine (UCB terminal J12, pin 4) is used to control the desired mode of operation, as described below, where “Start” means pin 4 is connected to ground (or “Low”). Grid Connect to Stand Alone Mode When the GC Enable and SA Enable inputs are toggled, and the Start/Stop input is set to “Start”, the MicroTurbine passes through the following transition states, as shown in Figure 3: 1. Output contactor is opened within about 50 milliseconds to stop export of power from the C60/C65 MicroTurbine, 2. The MicroTurbine generator continues to produce power, which is available to recharge the battery pack, 3. The MicroTurbine firmware transfers to the new output mode, 4. The output contactor closes, making the MicroTurbine power available to the system in the Stand Alone operating mode. GC Enable (2 to grd) SA Enable (3 to grd) Stop Start/Stop (4 to grd) MicroTurbine Output MicroTurbine State Grid Connect Stand Alone Active Inactive <7s Inactive Active Start < 50ms Transition to Stand Alone Figure 3. Fast Transfer from Grid Connect to Stand Alone 480011 Rev B (February 2006) Page 4 of 14 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 equipment ratings, 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 | Application Guide - Model C60/C65 Dual Mode – Fast Transfer
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