The WDR offers the same functionality of a traditional traction diode rectifier (TDR), with the dif ference that the diode modules are installed on a removable trolley, accessible by the front of the unit.
In applications with no rear access to the rectifier for maintainability, the withdrawable diode rectifier offers the flexibility of permitting back to the wall installation, while enabling access to the power components. The removable trolley consists of the power diode modules, its associated protection fuses, transient suppressors and is available as a 12 diode or an 18 diode cart. Flexible cart configurations make it possible to offer a variety of 6 or 12 pulse, 750 or 1500Vdc cubicles.
The WDR is equipped with a full set of safety features, such as locking system, overheat monitoring, voltage and current measurements, earth relay and overload protection. Control lamps on the front panel are indicating any type of trip or fault. In case of any issue, the cart can be easily replaced by the spare one. Continuous grounding is provided during cart inserting and withdrawing. Rotary pair of wheels at the front guarantee easy maneuvering.