FZW28-12(FFK) outdoor boundary vacuum Load Switch is suitable for outdoor three -phase AC distribution system with rated voltage of 12 KV and rated frequency of 50 Hz, used for open/closed load current and closed short circuit current. FZW28- -12(FFK) outdoor boundary vacuum load switch is applicable to substation, industrial and mining enterprises and urban and rural networks for protection and control, urban and rural network automation distribution network and frequently operated places. FZW28-12(FFK) outdoor boundary vacuum load switch is used for operational control switches for overhead line distribution systems in a variety of forms. It has outstanding advantages such as free- oil, simple Mechanism, reliable performance and no maintenance, and has been widely used so far. The product is combined with equipment such as FDR type fault detector or RTU remote terminal device to form a distribution automation system with very simple structure, which can realize automatic positioning of overhead line faults and automatic isolation of fault sections. In order to update the existing distribution Switchgear in China, it is necessary to realize the transformation of power distribution equipment characterized by no oil and automation.

Working Condition

O Temperature:- 25C~+70°C. O Altitude :2000m. O Wind speed≤35m/s, Relative humidity≤95%. O Seismic intensity: 8. O Ground level acceleration1/4g, Ground vertical acceleration 1/8g, Safety factor1.7. O Pollution level: II O Max. Icing thickness: 10mm. O System neutral point earthing method: neutral point is not earthed / arc suppression coil earthing / small resistance earthing system.

Features

Automatic blocking phase-to- -phase short- -circuit fault: When the same short- -circuit fault occurs in the user' s branch, the demarcation switch is opened and locked immediately after the substation breaker or recloser protection trips. After the substation coincides, other branch users on the feeder quickly resume power supply. Quick locating fault point: After the user's branch line accident caused the protective action of the dividing switch, the responsible user loses power and reports the accident information on his own initiative. The power company can dispatch personnel to the site to check the cause of the accident through the handheld computer or communication module. Automatic cut-off single-phase earthing fault: When a single- .phase ground fault occurs on the user's branch, the demarcation switch is automatically opened; other sub- -stations and feeder users on the feeder do not feel the fault. This switch can realize the following funtions: quick- break protection, over-current protection, three-fold reclosing, event recording, anti- surge protection, zero sequence protection, real-time clock, post- reclosing acceleration, real-time status inquiry, smart handheld control, local/remote setting.fault active reporting, GSM short message function.

Drawing

Environmental