SANWA TEKKI CORPORATION

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ShinkansenSection Insulator

AC section insulator for different-phase sections

交流用 異相用

Section insulators of this type are used in the sections for separating different-phase power supplies or neutral sections of AC overhead contact lines (20000 to 25000 VAC). They are made of FRP. Their standard lengths are specified to be 6 m for the Shinkansen and 8 m for narrow-gauge lines on the basis of their arc-cutting performance.

Main specifications of the product shown in the photograph

ModelAC section insulator for different-phase sectionsRemarks
Tensile withstand load32.3kN (3300kgf)Applicable 14.7kN (1500kgf)
21.6kN (2200kgf)Applicable 9.8kN (1000kgf)
Withstand voltageAC100kV-5minutes 
Leakage Current1mA or less 

 

DC section insulator No. 2

直流用 2号

Section insulators of this model are the most used for DC overhead contact lines (1500 VDC). Their insulators are made of FRP. The pantograph contact strips directly touch them while sliding.

Main specifications of the product shown in the photograph

ModelDC section insulator No. 2Remarks
Tensile withstand load33.0kN (3370kgf)Applicable 14.7kN (1500kgf)
22.0kN (2240kgf)Applicable 9.8kN (1000kgf)
Insulation resistance2000MΩ more 
Withstand voltageAC30kV-10minutes 
Leakage Current1mA or less 

DC section insulator No. 3 Quasi

直流用 3号 準Section insulators of this model are used for DC overhead contact lines (1500 VDC) in sections where carbon contact strips are used. Their support slider made of metal and insulating material allows the pantograph contact strips to make almost no contact with the FRP insulators.

Main specifications of the product shown in the photograph

ModelDC section insulator No. 3 QuasiRemarks
Tensile withstand load33.0kN (3370kgf)Applicable 14.7kN (1500kgf)
22.0kN (2240kgf)Applicable 9.8kN (1000kgf)
Insulation resistance2000MΩ more 
Withstand voltageAC30kV-10minutes 
Leakage Current1mA or less 

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