DTB for digital substations belongs to innovative high-voltage switchgear family of Hitachi Energy.
Hitachi Energy's DTB can be equipped with Motor Drive (MD) and an intelligent local control cabinet, for smooth integration into substation automation systems using IEC 61850. MD brings the technology to continuously monitor the functions of the switchyard, whilst performing real-time simulation and diagnostics, allowing pro-active management of the life-cycle of the asset and remote service intervention.
For connection to the IEC 61850-9-2 process bus, non-conventional instrument transformers (NCITs) FOCS, ELK-CP14 or ELK-CP3 with merging units are used for sampled values for protection and metering. Alternatively, SAM600 stand-alone merging units can be connected to conventional current or voltage transformers of the PASS.