Why the Supplier You Choose Determines Insulation Performance Electrical insulation is not a commodity purchase. A transformer that fails after two years, a GIS spacer that cracks under thermal cycling, or an FRP rod that delaminates under load all trace back to one decision made months earlier: wh...
A transformer casting can pass a visual inspection and still fail partial discharge testing months later, and the reason is often hidden inside one process variable that nobody wrote down: the viscosity of the mixed resin at the moment it entered the mold. Voids that never escaped, glass cloth that...
The 80% Rule: A Load Limit Backed by Insulation Physics The 80% rule for transformers states that a transformer should not carry a continuous load above 80% of its rated capacity. Push past that line and the unit is no longer considered healthily loaded. Windings run hotter, insulation ages faster,...
“ From this year “