61000 SYSTEM TM S E R I E S AnswerModule® TM CapSwitch Diagnose and locate capacitor transients Capacitors provide voltage support and correct displacement power factor on your power distribution system. Some capacitors are permanently connected; many others are switched on and off as needed. Time clocks, voltage levels, and load sensors are all used to trigger capacitor switching. But capacitor switching can cause disruptive transients, the second most common power quality event (voltage sags are the most common). Cap switch transients can disrupt adjustable speed drives, data communication systems, process controls, or any load that cannot tolerate such sub-cycle transients. The CapSwitch AnswerModule identifies the cause of these events. Capacitor switching transients can travel long distances through your power grid and, in some cases, they can be magnified on low voltage busses. After you discover a disruptive capacitor switching transient problem, you must locate its source. The CapSwitch AnswerModule points you in the right direction This AnswerModule automatically identifies and points to the direction of the capacitor switching transients. The GPS-based precision time stamps in the Encore Series let you combine reports from many locations, so you can instantly track down the offending capacitor bank and develop a solution to the problem (new switching schedule, controlled switching, or changing equipment). You can also determine if a capacitor switching event originated on the customer side of the me- ter at those facilities where the customer has their own capacitors. Using Poynting Vector analysis coupled with expert knowledge, the CapSwitch Answer Module executes proprietary algorithms that give accurate results for grounded and ungrounded capacitor banks, for individual and back-to-back capacitor switching, and even for magnified transients caused by downline capacitors. S E R I E S 61000 SYSTEM TM Specifications for CapSwitch AnswerModule Software Operating environment: Applications: Installed in any InfoNode® Three- Phase capacitor switching. Supports or Encore Series Software . grounded, ungrounded, back-to-back capacitor configurations; identifies magnification and restrike Input data: events. Accepts low-frequency transient waveform data from any DataNode® that provides greater than Algorithms: 64 samples/cycle for 3-phase voltages and currents. Proprietary algorithms incorporating Poynting Vector analysis, initiating dV/dt vs dI/dt, and expert Output information: knowledge. Confidence of diagnosis is automatically Capacitor switching transients identified. Direction assessed and categorized. (upstream, downstream) to switched capacitor Identified relative to monitored point. ©2007 Dranetz-BMI and Electrotek Concepts. All rights reserved. Printed in the United States. Specifications subject to change without notice. CapSwitchTM, AnswerModule®, DataNode®,and InfoNode®, are trademarks of Dranetz-BMI and Electrotek Concepts.