The DTVA 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 DTVA product type is configured to protect, control and supervise the elements of the transmission network, where systems are typically solidly grounded worldwide. In these networks single phase-to-ground faults result in high currents comparable to line-to-line faults; therefore, both types of faults need fast protection functions.