For power feeding voltage, it is stipulated that a 20 kV AC feeding for ‘conventional’ railways and a 25 kV AC feeding for Shinkansen.
AC feeding uses circuit configuration in which current is actively returned to the feeding line by using the feeding system like AT or BT feeding systems. This is to reduce the pantograph impedance (inductive interference) issue against communication equipment
Applicable to AT feeding system
This product is installed in each substation post to enhance rail power absorption effect.
For small capacity (2 MVA or less), radiator not needed