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Voltage Swell from Recloser Operation

Category: PMI Products, Power Quality, Voltage Unbalance, Guardian, Voltage

Voltage Swell from Recloser Operation

Voltage Swell from Recloser Operation_08

Read how to identify a voltage swell during a recloser operation and how to correct it.


A recloser is most associated with brief voltage interruptions, possibly followed by an extended outage if a fault cannot be cleared. Upstream customers experience voltage sag during the reclose attempts, when fault current is flowing.


A voltage swell seems counterintuitive during a fault or recloser operation, but in some situations the voltage can raise considerably during the reclose time. This phenomenon is discussed here along with a real-world example.


This Whitepaper Includes:

  • Recloser Operation
  • Faults in a 3-Phase System
  • Recloser Swell Example

Download White Paper Here