RECTIFIER FOR DC TRACTION SUPPLY With many years of experience in the field, Sécheron is able to propose a reliable and suitable range of rectifiers for DC traction power supply. Our natural air cooled rectifiers are equipped with diode blocks with high overload capability and high blocking voltage. General The design of the rectifiers is based on ideally sized and proven semi-conductors offering particularly high performances and reliability. All components are fully interchangeable. UN [Vdc] Rectifiers are designed in accordance with customers specifications and offer: • Compact design • Adaptability:...

• 6 Pulses version (connection n°8 in accordance with IEC60146-1-2) up to 1500 VDC. • 12 Pulses series version (connection n°12 in accordance with IEC60146-1-2) up to 3000 VDC. • 12 Pulses parallel version (connection n°9 in accordance with IEC60146-1-2) up to 1500 VDC with or without IPT. 24 pulses: 2x transformer-rectifier groups each 12 pulses and with adequate phase shift +/-7.5° on primary can be provided to achieve 24 pulses rectification. Protection Overvoltage protection: • Internal overvoltage: During turn-off, the load current of the diode does not stop flowing immediately but continues...

Applications In order to cover all customer requirements, Sécheron can provide different design of rectifiers: Fixed rectifier: Drawout rectifier: • Compact • Robust • Interchangeable • Easy maintenance Disconnectable rectifier: • High power • Easy maintenance Rectifier with insulating switch: Sécheron also offers a cubicle which integrates both functions of rectifier (up to 1200kW) and isolating switch for special applications for Light Rails (Compact solution for Tramway and T-Bus). Reverse current detection Power Diode Blocks Diodes fitted in heatsinks combined with snubbers and optional fuses...