Target Solutions
Circuit Breakers, CT/VT & Surge Arresters: Insulation Selection
Select hollow and post insulators for electrical, pressure and mechanical duty.
Operating Conditions & Selection
Circuit Breakers, CT/VT & Surge Arresters
Circuit breakers, instrument transformers and arresters impose different internal pressure, cantilever, insulation and sealing requirements. Identify whether a hollow or post insulator is needed, then verify material, flange drawing and test scope for that model.
Insulation dutySystem specification
Mechanical dutyCantilever and pressure
EnvironmentPollution and altitude
ReferenceIEC 61462 / IEC 62231 as applicable
Buyer Review Points
Specify hollow or post construction
Check cantilever load and pressure rating
Set creepage from site pollution conditions
Verify flange and gasket interface
Relevant Series — Verify by Model
Confirm standards and tests by product type