GNSS Precision-Time Clocks
The demand for accurate time synchronization available 24/7 increases with the growth of critical substation applications, such as phasor measurement, merging units, traveling-wave fault location and current differential protection operating over SONET and MPLS systems. In order to yield the best accuracy and granularity from such applications, the use of a common, precision-time reference is essential.
RT430 GNSS Grandmaster Clock is a clock referenced to GPS and GLONASS satellites. Offering a complete solution, these clocks are the universal precision time synchronization units, with an extensive number of outputs which supports many timing protocols, including the DST rules frequently used on power systems applications. In accordance with IEEE 1588 Precision Time Protocol (PTP), the RT430 is capable of providing multiple IEDs synchronization with better than 100ns time accuracy over Ethernet networks. Despite being likely to never lose time synchronization from satellites, the RT430 GNSS features a TCXO as its standard internal oscillator ensuring free-running accuracy when clock is not locked.
RT430 can be deployed in Ethernet applications where IEC 62439 PRP redundant architectures are required.”