FZW28-12(FFK)
This vacuum load switch is used in pole top sitution with the operation function of manual and electric.It adopts vacuum for arcextion,N2gas for external insulation,internal series isllating knife and interrupter.Its has high insulation,the internal built-in zero sequence and short to protece current transformer,and the inner (or outer)voltage transformer can supply the operational power.The whole structure is free maintenance equipment.
This switch consists of two parts:FZW28-12 vacuum load switch and detection part.The switch has fatal detection function,protect control function and communication function.The switch is installed in the 10kVoverhead line,and it can cut off single-phase earth fault and insulate phase fault automatically.It also can be used in the demarcation point in 10 kVdistribution line,and satisfactory Tjunction in branch line.