Uhlu lokutshintsha umthwalo we-voltage ephezulu:

Iswitshi yomthwalo sisixhobo sokutshintsha phakathi kwe-circuit breaker kunye ne-isolation switch. Inezixhobo ezilula zokucima i-arc, ezinokuthintela i-load current eyongezelelweyo kunye ne-overload current ethile, kodwa ayinakuthintela i-short-circuit current. Iswitshi yomthwalo ingavula kwaye ivale i-load current, i-excitation current, i-charging current kunye ne-capacitor bank current phantsi kweemeko eziqhelekileyo zokusebenza.

1) Iswitshi yomthwalo we-high-voltage yohlobo lwe-vacuum: ukusetyenziswa kwe-vacuum medium ukucima i-arc, ubomi bombane bude, ixabiso elithelekiswayo liphezulu, kwaye lifanelekile kwiimpahla ze-220 kV nangaphantsi.

2) Iswitshi yomthwalo we-high-voltage efakwe kwi-oyile: Isebenzisa amandla e-arc ngokwayo ukubola nokufutha i-oyile ejikeleze i-arc kwaye ipholise kwaye imise i-arc.

3) Iswitshi yomthwalo we-hexafluoride ye-sulfur ene-voltage ephezulu: kusetyenziswa igesi ye-hexafluoride ye-sulfur ukucima i-arc, umsinga wayo oqhekezayo mkhulu, kwaye umsebenzi wokuqhekeza umsinga we-capacitor ulungile, kodwa ulwakhiwo lungcolile, kwaye lufanelekile kwiimveliso ezingama-35 kV nangaphezulu.

4) Iswitshi yomthwalo ene-high-voltage ecinezelweyo: Isebenzisa umoya ocinezelweyo wepiston ngexesha lenkqubo yokuqhekeka ukuze ikhuphe i-arc, kwaye ulwakhiwo lwayo lulula, kwaye ifanelekile kwiimveliso ezingama-35 kV nangaphantsi.

5) Iswitshi yomthwalo we-high-voltage evelisa igesi eqinileyo: Sebenzisa amandla okuqhekeza i-arc ngokwayo ukwenza izinto ezivelisa igesi kwigumbi le-arc zivelise igesi ukuze ziqhumise i-arc. Ulwakhiwo lwayo lulula, kwaye ifanelekile kwiimveliso ezingama-35 kV nangaphantsi.

6) Iswitshi yomthwalo we-high-voltage yohlobo lomoya ocinezelweyo: ukusetyenziswa komoya ocinezelweyo ukuvuthuza i-arc kunokuphazamisa umsinga omkhulu, kwaye ulwakhiwo lwayo lungcolile, lufanelekile kwiimveliso ezingama-60 kV nangaphezulu.