FZW28-12F Outdoor high voltage vacuum load switch

Model and meaning

Features

Automatic interphase short circuit fault blocking: When the same short circuit fault occurs in the user's branch line, the boundary switch will immediately open and block the substation reclosing after the substation circuit breaker or recloser protection trips, and other branch users on the feeder will quickly resume power supply;

Quickly locate the fault point: After the boundary switch protection is activated due to a branch line accident, the responsible user will be cut off from power and will take the initiative to report the accident information. The power company's personnel can use a handheld computer or communication module to investigate the cause of the accident on site;

Automatically cut off single-phase grounding fault: When a single-phase grounding fault occurs in the user's branch line, the boundary switch automatically opens; other branch users on the substation and feeder line cannot feel the occurrence of the fault. This switch can realize the following functions: quick-break protection, overcurrent protection, three-time reclosing, event recording, anti-surge protection, zero-sequence protection, real-time clock acceleration after reclosing, real-time status query, intelligent handheld computer control, local/remote setting of fixed values, active fault reporting, and GSM short message function.

Technical Parameters