The DGEN (former product type: DTRV) product type is a member of the EuroProt+ numerical protection relay, made by Protecta Co. Ltd. The EuroProt+ complex protection in respect of hardware and software is a modular device. The modules are assembled and configured according to the requirements, and then the software determines the functions.
The DGEN relay includes variety of versatile protection functions along with the main differential protection, such as overcurrent, over/under voltage, frequency protections. The other main function is the automatic generator synchronizer. The device contains several functions especially made for generator applications as well, e.g. thermal-based negative sequence overcurrent protection, voltage dependent overcurrent, inadvertent energizing protections, loss of excitation, 100% stator earth fault protection, rotor earth fault etc. It can be applied as a back-up protection relay for downstream equipment (e.g. feeders, cables etc.).
The DGEN relay can support the double breaker terminals at any side of the transformer such as breaker and a half, or ring bus topologies. Note that automatic synchronization is available to one bus in this device. To be able to switch between several buses with the synchronizer please use the standalone version of the automatic generator synchronizer (ASZKG of the DAUT type).
The number and the functionality of the members of each product type is put together according to the application philosophy, keeping in mind the possible main usages. The available configurations of the DTRV type for generator are listed in the table below: