Common primary electrical components (main circuit equipment) in high and low voltage switchgear include the following equipment

CT for short [such as lzzbj9-10]

Voltage transformer is abbreviated as pt[e.g. jdzj-10]

Earthing switch [e.g. jn15-12]

Arrester (resistance capacitance absorber) [such as hy5ws single-phase type; TBP, JBP combined type]

Disconnector [e.g. gn19-12, gn30-12, gn25-12]

High voltage circuit breaker [such as oil less type (s), vacuum type (z), SF6 type (L)]

High voltage contactor [such as jcz3-10d/400a]

High voltage fuse [such as rn2-12, xrnp-12, rn1-12]

Transformer [such as SC (L) series dry transformer and S series oil transformer]

High voltage live display [gsn-10q type]

Insulating parts [such as wall bushing, contact box, insulator, insulation heat shrinkable (cold shrinkable) sheath]

Main bus and branch bus

High voltage reactor [such as series type: cksc and starter motor type: qksg]

Load switch [such as fn26-12 (L), fn16-12 (z)]

High voltage single-phase parallel capacitor [e.g. bff12-30-1], etc