Looking at different types of Siemens inflatable cabinets, they have common structural characteristics:

(1) Fixed structure technology, using maintenance-free vacuum circuit breaker technology, replacing operation with fixed vacuum circuit breaker

A limited number of center-mounted handcart oil-saving circuit breakers.

(2) The isolating switch and the grounding switch are combined into a 3-position switch to replace a single switch, which greatly reduces space and interlocking work.

(3) The current transformer uses a ring-core current transformer to replace the ordinary cast insulated current transformer that bears high-priced electrical loads.

(4) Adopting excellent sp6 gas insulation technology to replace air insulation, no maintenance and repair work for each switching element is needed.

(5) The cable connection adopts a fully insulated and anti-shock plug-in structure to replace the ordinary cable connector.