Designing the 40.5 kV Eco-Substation: A Vacuum-Switchgear Roadmap for Utilities and EPCs
Last year I sat in a control room outside Nairobi watching operators synchronize a 50 MW solar park to the national grid. The star of the show was not the inverters—it was a line-up of 40.5 kV vacuum switchgear that had just replaced a 1990s SF₆ board. Commissioning took four hours instead of four days, and the client’s sustainability officer greeted every stakeholder with the same...
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