Rigid Overlay Catenary

The Rigid Overhead Catenary System (ROCS) can replace the flexible OHE in the following areas with advantages as described below: –

AREA OF APPLICATION

Tunnel having inadequate head room including FOBs/ROBs/Station area and any other location.
Where the provision of Auto-tensioning device (ATD) is difficult
In metros, where we can easily install supports
In maintenance depots

ADVANTAGES

System suitable and adapted to reduced height tunnels and for particular outdoor installations.
The absence of mechanical tension allows having a contact wire with longer live and greater wear.
Large cross section (more current carrying capacity, no additional feeders required).
Reduces the maintenance cost, as well as an important quantity of spare parts and components to stocks and handle, compared to the flexible OHE.
Suitable for any condition, i.e. high train frequencies, polluted air, saline atmosphere, humidity, high and low temperatures.
Less repairing cost as it involves replacement of affected part only

It is formed by an aluminium alloy profile, which accommodates the copper contact wire, with a great cross section for the current that allows many operative ROCS voltages from 750V (DC) to 25000 V (AC), without any feeding supply.

RDSO has circulated Instruction/Guidelines (No. TI/IN/0041) for adoption of ROCS of any national or international standard shall be followed.

TRAINANCE has globally executed ROCS work for different application as described above.

Rigid Overlay Catenary

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