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PI22G – 22kV, Composite Station Post Insulator

An image of the Wallis PI22G Insulator

PI22G – Customer Drawing

This insulator consists of a polymeric housing over a pultruded fibreglass rod to which galvanised steel or aluminium end fittings are attached. By moulding directly over the end fitting, or by using a track-resistant polyurethane sealant, moisture ingress to the fibreglass rod is prevented.

  • Quality design and manufacturing.
  • Complies with AS4398.1.
  • Available to 500kV applications.
  • Available in Grey and Red.
  • Reliable performance.
  • Standard bolt circles and stranded end fittings.
Nominal System VoltageLightning Impulse Withstand VoltageDry AC FlashoverWet AC FlashoverDry AC WithstandWet AC WithstandHeightNominal Creepage DistanceLargest Shed DiameterCantilever StrengthCompressive LoadPart Number
Nominal System Voltage22 kVLightning Impulse Withstand Voltage150 kVDry AC Flashover124 kVWet AC Flashover81 kVDry AC Withstand108 kVWet AC Withstand65 kVHeight305 mmNominal Creepage Distance765 mmLargest Shed Diameter122 mmCantilever Strength12.5 kNCompressive Load7500 kgPart NumberPI22G

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