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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Technical Reference: Capstone MicroTurbine Electrical Installation Additionally, and in accordance with Underwriters Laboratories UL 2200, the various torque specifications required on the terminal block MUST BE as noted in Table 1. Table 1. Terminal Block Torque Specification 2/0 to #6 62 to 13 120 13.8 Phase Rotation During Grid Connect operation, the MicroTurbine phase terminals may be connected to the grid in any order, based upon auto-synchronization to the electric utility grid. The output from the MicroTurbine is L1-L2-L3 counterclockwise, and must be connected to the grid in this order for Stand Alone or Dual Mode operation. Transformer Applications A voltage transformer for the MicroTurbine will be required for any of the following conditions: Circuit-connectvoltagesotherthan400to480VoltsAC. Connectiontoasystemwheretheimpedanceishighenoughtocauseovervoltageat the rated output current of the system. In this case, a tapped or autotransformer is required to lower the nominal voltage, if this cannot be done with the installed transformer. Refer to Figures 4 through 12 for allowable grid connections. Each of the following items must be observed for proper installation: ProperbranchcircuitdisconnectMUSTBEinstalledbetweentheMicroTurbineand the electrical service panel. The branch circuit disconnect may be installed on either side of the transformer within sight of MicroTurbine. Terminal:PE/G–N–L1–L2–L3 Wire Size Torque Value (AWG) (mm2) (Lb-in) (Kg-m) NOTE If a fused disconnect is used at the MicroTurbine, it is recommended to install the fuses on the MicroTurbine side. This applies to all configurations. TheneutralandgroundMUSTBEconnectedinONLYONElocationattheutility or local branch circuit protection. Theneutral-to-groundpostintheMicroTurbineUserConnectionBayMUSTBE removed (if equipped). 410009-001 Rev C (September 2003) Page 8 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 | Technical Reference Capstone MicroTurbine Electrical Installation Introduction
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