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Cap
Switch Transients Are Difficult to Pinpoint
Although
capacitors provide voltage support and correct displacement
power factor on power distribution lines, capacitor switching
transients are the second most common power quality event,
after voltage sags. Cap switch transients can disrupt any
load that cannot tolerate overvoltage sub-cycle transients,
including adjustable speed drives, data communication systems
and process controls. The transients also can travel long
distances, in some cases becoming magnified on low-voltage
busses and in virtually all cases making the location and
cause of the problem difficult to identify.
Accurate
Results and Assessment of the Diagnosis
The
CapSwitch AnswerModule automatically identifies capacitor
switching transients and determines the direction (upstream
or downstream) from the monitoring point. The AnswerModule
supports grounded, ungrounded, back-to-back capacitor configurations,
identifying magnification and restrike events. Proprietary
algorithms and Poynting Vector analysis produce accurate results.
Confidence of the diagnosis is then automatically assessed
and categorized.
Details
Available in Real Time from any Web Browser
The
CapSwitch AnswerModule can be installed remotely into any
InfoNode and accessed through an Internet browser. Real-time
graphs can be shared with multiple users, promoting collaborative
decision-making and problem resolution.
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