EC Bo-Bo 3400kW Locomotive *	EC Co-Co 5100kW Locomotive *
Diesel Locomotive Co-Co  *	Co-Co locomotive asynchrone *

Modernization steps:

• replacement of the transformer's tap changer with static converters based on thyristors or IGBTs
• replacement of the heavy-duty contactors with semiconductor-controlled rectifiers;
• use of static converters for the supply of auxiliary services;
• replacement of the piston compressor with a rotary screw compressor;
• installation of an electronic wheelslip protection system that improves traction force;
• installation of a DSP-type traction control computer, which allows the isolation of any traction motor in the event of a fault and their diagnosis;
• upgrade of the battery charger
• installation of a central computer for locomotive control and malfunction diagnosis
• using a cab monitor to display the locomotive status;
• reinforced glass based dashboard
• using a controller for speed control and traction current;
• installing an air conditioning system for each driver cab;

The technical solutions are based on the customer's needs and on the locolmotive's characteristics.