ZW32-12 type outdoor HV vacuum circuit breaker
ZW32-12 series outdoor HV vacuum circuit breaker is used in three-phase power system with AC 50Hz and rated voltage of 12kV, for opening and closing load current, overload current and short circuit current. The circuit breaker can be equipped with reclosing controller, used to identify the current characteristics and realize multiple automatic reclosing or isolation of permanent faults; with self-contained PT as the power source, it becomes a controllable intelligent circuit breaker with voltage and current signal output.
ZW20-12 type outdoor HV vacuum circuit breaker
ZW20-12 series vacuum circuit breaker is the ideal equipment to solve the accidents caused by permanent faults occurred inside the users in the incoming section of T-connection of 10 kV overhead distribution lines; it has a built-in zero-sequence current transformer installed on the outgoing side, which is used in conjunction with the demarcation controller and installed at the T-connection or the user end of the 10kV overhead distribution line, and can realize automatic clearing of single-phase earth fault and automatic isolation of phase-to-phase short circuit fault, ensure safe use of electricity for users without fault. It is suitable for protection and control in substations, industrial and mining enterprises and rural power grid distribution system, and for use in places where frequent operation happens.
ZW8-12 type outdoor HV vacuum circuit breaker
ZW8-12 HV pole-mounted vacuum circuit breaker is a new type of outdoor HV switchgear with rated voltage of 12kV, it is mainly used in the distribution systems of urban grid and rural grid, and used for opening and closing load current, overload current and short circuit current. ZW8 HV pole-mounted vacuum circuit breaker is an ideal product to realize oil-free operation in place of the oil-immersed circuit breaker.
Primary/secondary fusion pole-mounted circuit breaker
The primary/secondary fusion complete sets of pole-mounted switches can be divided into complete section/interconnecting circuit breaker, complete demarcation circuit breaker, complete section/interconnecting load switch, and complete demarcation load switch according to the application functions of switches. The primary/secondary fusion complete feeder terminal can realize local feeder automation function independent of the distribution automation master station and communication; realize local line selection of single-phase earth fault, regional positioning and isolation through the short circuit/earth fault detection technology, voltage-free opening, fault path adaptive delay call closing and other control logics, and adaptive multi-branch multi-connection distribution network frame structure; and realize isolation of fault area and restoration of power supply in non-fault area.