Pull-off arms of this type are used for heavy compound catenary equipment for the Shinkansen. They are classified into several models: Model HC-1 (photograph), which is used for hinged cantilevers that provide support from poles in open sections; Model HC-2, which is used in places such as tunnels and station buildings.

Main specifications of the product shown in the photograph

Model	HC-1A-E main arm	HC-1A-E auxiliary arm
Tensile withstand load	4.12 kN (420 kgf) (for 3 minutes)	4.12 kN (420 kgf) (for 3 minutes)
Slipping sideway withstand load	1.47 kN (150 kgf) (for 3 minutes)	–

 

Pull-off arms of this model are used for CS simple catenary equipment. They are classified into several models: Model CS-1 (photograph), which is used for hinged cantilevers that provide support from poles in open sections; Model CS-2, which is used in places such as tunnels and station buildings.

Main specifications of the product shown in the photograph

Model	CS-1A-E main arm
Tensile withstand load	3.14 kN (320 kgf) (for 3 minutes)
Slipping sideway withstand load	1.47 kN (150 kgf) (for 3 minutes)

   

Pull-off arms of this model are the most commonly used pull-off arms for narrow-gauge lines. Their pipes are designed into a bow shape to prevent them from adversely affecting pantographs when pantograph inclination, train rolling, or some other phenomenon occurs due to cant in curves.

Main specifications of the product shown in the photograph

Model	BL (for general purposes, bow-type)
Tensile withstand load	2.94 kN (300 kgf) (for 3 minutes)
Slipping sideway withstand load	0.98 kN (100 kgf) (for 3 minutes)

 

Pull-off arms of this model are used to ensure the insulation of the rear end lines of DC overhead contact lines (1500 VDC) in places such as station buildings and the overbridges of narrow-gauge lines.

Main specifications of the product shown in the photograph

Model	BL (for insulation, bow-type)
Tensile withstand load	2.94 kN (300 kgf) (for 3 minutes)
Slipping sideway withstand load	0.98 kN (100 kgf) (for 3 minutes)
Withstand voltage	AC 10 kV (for 10 minutes, in a dry condition)

 

The cyclic current that occurs in hinged cantilevers due to the potential difference between contact wires and messenger wires may fuse bolts supporting the rear ends of pull-off arms. Pull-off arms of this model prevent the flow of cyclic current with the aid of an insulating material. Compare with pull-off arms for insulation, it is designed to be low in dielectric strength.

Main specifications of the product shown in the photograph

Model	BL (for cyclic current prevention, bow-type)
Tensile withstand load	2.94 kN (300 kgf) (for 3 minutes)
Slipping sideway withstand load	0.98 kN (100 kgf) (for 3 minutes)
Withstand voltage	AC 3 kV (for 10 minutes)