Epoxy Bushing

A: Vacuum preparation of the mixed resin compound removes entrapped gases prior to injection. The aluminum mold is maintained at precise thermal setpoints, and material is injected under constant hydraulic pressure to compensate for volumetric shrinkage during the gelling phase.

A: Bisphenol-A resin provides optimal mechanical strength and indoor dielectric stability. Cycloaliphatic formulations lack benzene rings in their backbone structure, delivering inherent UV stability, arc track resistance, and weatherability required for unprotected outdoor environments.

A: Conductor cross-sections and body profiles are engineered to withstand specified short-time withstand currents (e.g., 31.5 kA / 3 s). Mechanical bending moments are validated through finite element method (FEM) analysis and destructive cantilever load verification.

A: Shipments include individual routine test records for partial discharge values (pC) and power frequency withstand voltage, dimensional inspection sheets, and material Certificates of Analysis (COA) for resin and filler lots.

A: Tooling design, Moldflow simulation, CNC machining of steel molds, and first-article sample fabrication require 4 to 6 weeks. Mass production schedules are initiated upon formal customer sample approval.

A: Threaded inserts are mechanically anchored, knurled, or cross-pinned to the primary conductor stem prior to mold placement. Routine pull-out verification tests ensure retention forces exceed standard tightening torque limits.