10kV strømavbryter relèbeskyttelseskrets

A load switch is a type of switching device positioned between circuit breakers and disconnectors. It features a simple arc extinguishing device capable of interrupting rated load current and certain overload currents, but cannot interrupt short-circuit currents. Load switches can be classified into high-voltage and low-voltage types according to their operating voltage.Solid gas-producing high-voltage load switch: This type utilizes the energy from the breaking arc itself to cause gas-producing

Med forbedringen av samfunnsproduktiviteten og livskvaliteten, øker behovet for strøm stadig. For å sikre effektiviteten av kraftnettets systemkonfigurasjon, er det nødvendig å konstruere distribusjonsnett basert på faktiske forhold. Imidlertid spiller 17,5kV ringhovedenheter en viktig rolle under drift av distribusjonsnett, så innvirkningen av feil er ekstremt betydelig. Det er derfor essensielt å vedta rimelige og effektive løsninger basert på vanlige feil i 17,5kV ringhovedenheter. Bare da ka

DTU (Distribution Terminal Unit), a substation terminal in distribution automation systems, is secondary equipment installed in switching stations, distribution rooms, N2 Insulation ring main units (RMUs), and box-type substations. It bridges primary equipment and the distribution automation master station. Older N2 Insulation RMUs without DTUs cannot communicate with the master station, failing to meet automation requirements. While replacing entire RMUs with new DTU-integrated models would sol

1. Specific Design1.1 Design ConceptState Grid Corporation of China actively promotes grid energy conservation and low-carbon development to achieve national carbon peak (2030) and neutrality (2060) goals. Environmentally friendly gas-insulated ring main units represent this trend. A new 12kV integrated environmentally friendly gas-insulated ring main unit was designed combining vacuum interrupter technology with three-position disconnectors and vacuum circuit breakers. The design utilized Solid