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
Model AC section insulator for different-phase sections Remarks
Tensile withstand load 32.3kN (3300kgf) Applicable 14.7kN (1500kgf)
21.6kN (2200kgf) Applicable 9.8kN (1000kgf)
Withstand voltage AC100kV-5minutes  
Leakage Current 1mA 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
Model DC section insulator No. 2 Remarks
Tensile withstand load 33.0kN (3370kgf) Applicable 14.7kN (1500kgf)
22.0kN (2240kgf) Applicable 9.8kN (1000kgf)
Insulation resistance 2000MΩ more  
Withstand voltage AC30kV-10minutes  
Leakage Current 1mA 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
Model DC section insulator No. 3 Quasi Remarks
Tensile withstand load 33.0kN (3370kgf) Applicable 14.7kN (1500kgf)
22.0kN (2240kgf) Applicable 9.8kN (1000kgf)
Insulation resistance 2000MΩ more  
Withstand voltage AC30kV-10minutes  
Leakage Current 1mA or less  

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