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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Technical Reference: Component Descriptions - Model C60 MicroTurbine Load Control Module (LCM) The LCM is a collection of hardware/software that converts internal DC Bus voltage into power usable by the load. Pre-Charge Board 1. Pre-charge DC bus when grid applied 2. Source 25.4V power supply through DC bus 3. Measure 5Ω across each resistor 4. When grid voltage applied VoltagepresentatPreChargeBoard Voltagepresentoninvertersideofoutputcontactor 5. Failures InverteroperationwithOutputContactoropen Improperutilitywiringcanleadtofailure EMI Filter The EMI filter is used to reduce high frequency RF noise from the system. 1. Conditions voltage harmonics AC output Resistor/Capacitorcircuit 2. Connections made OutputContactorinLoadControlModule(LCM) TerminalblockinUserConnectionBay 3. Most likely failures InverterfaultsOV,UV,Frequency HighGridImpedance Ensureconnectionsaretight Output Contactor 1. Output contactor bypasses Pre-charge Board Highpowerflowtoandfromload 2. Rated for 600 VAC and 120 Arms/phase. 3. Powered through 25.4V from LCM Power Board Connectedtoterminals(L1,L2,L3)fromtheOutputInductors 4. Economizer circuit latched when contactor closed Mechanicallatchmechanism Reducepowerrequiredbycontactorcoil 410035-001 Rev B (August 2003) Page 22 of 38 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 Component Descriptions Capstone Model C60 MicroTurbine
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