New Woodward Mslc Synchronizer Load Control 9907-004

US $560

Las Vegas, Nevada, United States
Jan 29th

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BRAND NEW IN SEALED PACKAGE. 4 WIRE Y 120/240 SERIAL NUMBER 13493170 REV NThe MSLC is a microprocessor-based overall plant load control designed for usein a system with Woodward DSLC™ (Digital Synchronizer and Load Control)controls on each generator to provide utility synchronizing, paralleling, loading,and unloading of a three-phase generating system.MSLC functions include:• Selectable for phase matching or slip frequency synchronizing between theutility and a local bus with voltage matching;• Automatic system loading and unloading for bumpless load transfer;• Import/Export level control capability;• Process control for cogeneration, pressure, maintenance, or other process;• Proportional loading of associated DSLC controls in isochronous loadsharing;• Adjustable Power Factor control;• Built in diagnostics with alarm relay driver output;• Multi-function adjustable high and low limit alarms and adjustable loadswitches with relay driver outputs;• Digital communications network to provide loading and power factor controlof individual DSLC equipped generators;• Full setup, metering, and diagnostic capability through a hand heldprogrammer terminal (Figure 1-2).Synchronizer The MSLC uses digital signal processing techniques to derive both true RMSvoltages and relative phase angles of the fundamental frequencies of the utilityand the local bus voltage wave forms. Digital signal processing techniques offersignificantly improved measurement accuracy in the presence of wave formdistortions, particularly since the phase measurement does not depend on zerocrossings of the voltage wave forms.Either phase matching or slip frequency synchronizing may be selected. Phasematching provides rapid synchronizing for critical standby power applications.Slip frequency synchronizing ensures that the initial flow of power will be eitherout of the local system (export) or into the local system (import), depending onwhether a positive or negative slip is chosen. For both synchronizing methods,the MSLC uses actual slip frequency and breaker delay values to anticipate anadjustable minimum phase difference between the utility and the local bus.Additional synchronizer functions include voltage matching, time delayedautomatic multi-shot reclosing, auto-resynchronizing, and a synchronizer timeoutalarm. Each of these features may be enabled or disabled during setup.