Electrical distribution panels to 1000 Vac for CCS systems

The main innovation made to traditional IS394B-specification systems concerns the ability to self-configure during a fault on the 1000Vac line or on both Step-up switchboard and Step-down switchboard equipment.

The Step-up switchboard is generally placed in the station and is powered by a no-break source such as an SIAP.
The purpose of such a switchboard is to raise the input voltage from 400Vac to 1000Vac with a transformer at IS365.
The aim is to obtain a power transmission line that has few losses and remains in low voltage LV with the resulting advantages in the use of components and associated costs.

The Step-down switchboard, on the other hand, is placed along the line and has the purpose of converting the 1000Vac line voltage into a voltage that can be used by 'standard' consumers typically 230Vac or 400Vac (single-phase or three-phase) or 150Vac.
This switchboard is essentially composed of a 1000Vac line input/output realised with two motorised isolating switches and a lowering transformer to IS365 specifications.
A section is therefore generally realised with two Step-up switchboard placed at the ends of the line and several Step-down switchboard placed along the line.

The automation of the switchboards is managed by PLC controllers suitable for working in outdoor environments as indicated in IS402.
In the Step-up switchboard there are touch screen monitors with the function of HMI to allow monitoring and management of the section locally, while in the Step-down switchboard there is a management PLC, but without HMI.
These switchboards are connected to each other via an Ethernet ring connection so that an interruption in the network cable (or fibre) does not affect functionality.

In turn, the Step-up switchboard have a dedicated Ethernet communication port for interfacing the system remotely if required.
Generally two servers are provided (for redundancy) to be installed in a central location or in any other place to be chosen by the customer to centralise data from one or more routes. It is then possible to create user workstations to operate on the route.