Selection of main bus and branch bus
2. Selection of support bus
For the selection of the branch busbar of the high-voltage switchgear, the specifications are in accordance with this specification. For the copper bar cutoff in the inlet cabinet, the rated primary current of the current transformer equipped with the inlet switch is used as the basis for selection, and the main busbar or the switch should not be referred to Rated current value, the copper block cut-off flow in the outlet cabinet should be based on the rated primary current of the current transformer equipped with the outlet switch, and the manufacturability of the busbar overlap structure in the high-voltage cabinet, such as the primary component
To meet the requirements of full overlap of the structure. The connection row of lightning arrester, voltage transformer and sensor is designed according to 30*3 without affecting the dynamic thermal stability. When there are multiple main buses, the thickness of the branch bus should be considered as uniform as possible.