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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Technical Reference: Capstone MicroTurbine Electrical Installation Electrical Connections – Stand Alone If the Capstone MicroTurbine is equipped with the Stand Alone option, the operator must supply the electrical cable and switchgear through which the Capstone MicroTurbine delivers its output power. The cabling and switchgear must be capable of safely handling the maximum potential loads, and must meet all applicable local and national regulations. It is essential that the owner/user consult all of the applicable codes and standards before electrically wiring the MicroTurbine. A qualified electrician may be required to do the work. The electrical connection terminal block for the MicroTurbine can be found in the Power Bay located at the rear of the enclosure. Stand Alone Loads Stand Alone loads may be connected in any combination of line-line or line-neutral, while respecting the maximum current and voltage ratings as described in the Model C30 Electrical Technical Reference (410000) and the Model C60 Electrical Technical Reference (410001). Notice that in Stand Alone systems, the MicroTurbine(s) neutral must be solidly connected to ground at a single point. Voltage The output voltage from the MicroTurbine may be programmed from 150 to 480 volts AC, phase-to-phase, and 10 to 60 Hz. Output power capabilities are reduced at the lower voltage levels, based on the operational current limits. Phase Rotation The output voltage/current phase rotation is counterclockwise, as in L1 to L2 to L3. Notice that improper phase rotation connections can damage the connected loads. Capstone cannot be held responsible for equipment damage caused by improper connections. It is the operator’s responsibility to verify the proper phase connections between the MicroTurbine and the load(s). Stand Alone Transformer Applications For Stand Alone applications, power transformer(s) will be needed for loads that require voltages different from the programmed MicroTurbine Stand Alone voltage set point. Refer to the Stand Alone Operation Technical Reference (410028) for details on the voltage and protective set points used for Stand Alone operation. Load Circuits The MicroTurbine output consists of three phases and a neutral circuit. These may be used in any combination, limited only by current limits on each phase, as described in the Model C30 Electrical Technical Reference (410000) and the Model C60 Electrical Technical Reference (410001). The nominal Stand Alone voltage setting is available between any two phases. Single phase and/or unbalanced loads can be accommodated, respecting the current and power limits previously noted. Notice that the MicroTurbine Neutral must always be grounded. 410009-001 Rev C (September 2003) Page 14 of 24 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 Elec Install
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