ABB is extending its earth-fault protection portfolio with the new version of the 630 protection and control series, now introducing a unique multifrequency admittance-based earth-fault protection for higher sensitivity and selectivity. Also the addition of harmonics-based earth-fault protection, together with the further improved intermittent earth-fault protection, contribute to taking the earth-fault protection portfolio to new heights in response to the protection requirements of today's extensive cable networks.
Low-voltage ride-through, reactive power undervoltage and voltage vector shift protection are introduced to meet the increasing demand for higher grid stability and reliability, a result of today's distributed generation units being connected to the grid and continuously growing in size.
Introducing hot spot and aging rate monitoring in the medium voltage protection and control portfolio allows calculation of the hot spot temperature of the transformer winding and the momentary aging rate. As a result, the impact of thermal stress on the lifetime of the transformer can be determined.
The 630 series is characterized by functional scalability and flexible configurability, designed to unleash the full potential of the IEC 61850 standard for communication and interoperability of substation automation devices. Another distinguishing feature is the large and detached HMI, beneficial from a wiring perspective due to the generous amount of IOs. As a member of the Relion® product family, the 630 series relays share the same Human Machine Interface look and feel as the other Relion series relays.
For further information, please refer to the REF630, REM630, RET630 and REG630 pages.
