LYCOS RETRIEVER 
Capacitor: Capacitor Controls
built 647 days ago
Capacitor Controls are communications equipped Capacitor Controls that add new capabilities for monioring and controlling capacitor banks. Basic communications added to local controls allow command and contol functions while maintaining some of the feaures and capabilities of a full function local control.
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Capacitor controls benefit utilities by reducing unused capacity, regulating voltage, monitoring line conditions, and protecting capacitor banks. S&C’s capacitor control products offer you reliable, easy to use, and flexible ways to add effective automation to your system today.
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All capacitor controls have an electronic clock with perpetual calendar for leap years, holidays and daylight savings time. A 10-year replaceable battery maintains the clock time through extended power outages. The LCD display confirms all settings and displays the non-resetable operations counter. Front panel lights confirm the proper operation of the control and display the capacitor switch status.
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In purchasing and specifying capacitor banks and harmonic filter banks, the cost associated with nearby electrical equipment miss-operation or damage should be evaluated against the cost of additional equipment to eliminate switching transients. Capacitor banks and harmonic filter banks in the 2.4kV through 34.5kV voltage range can be equipped with zero voltage closing controls to nearly eliminate switching transients. These controls operate their associated vacuum switches so that contact closure occurs at the zero-voltage crossing point.
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A fixed-value capacitor has a series of coloured bands around its body, which signifies the capacitor's value. Variable capacitors are ones whose capacitance can be varied between an upper and lower limit. They may be adjusted by rotary controls and are often used on radio sets to change frequency.
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The main thrust of evolution behind the AFS system is an ultra capacitor that buffers the charge between it's batteries and regeneration system. The company says that the padding effect of the ultra capacitor and advanced electronic controls helps keep Lithium Ion batteries from overheating from the demands of heavy discharge and recharging. A major hurtle in using these batteries in plug-in hybrid electric cars.
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Capacitor Controls