Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

The main hazard points in transformer operation are: Switching overvoltages that may occur during the energizing or de-energizing of no-load transformers, endangering transformer insulation; No-load voltage rise in transformers, which may damage transformer insulation.1. Preventive Measures Against Switching Overvoltages During No-Load Transformer SwitchingGrounding the transformer neutral point is primarily aimed at preventing switching overvoltages. In 110 kV and higher large-current grounding