The modern IEC61850 power substation includes PMU synchrophazors and IED inteligent electronic device relays. As a result, they requires robust synchronization with accuracy better than a single microsecond. For instance, Elproma NTS-5000 perfectly suits for such smart-grid needs, because product ensures accuracy of tens of nanosecond. Besides, this device operates in a special PTP IEEE1588 profiles. For instance, IEEE C37.238 power and IEC61850-3-9 power utility profiles. According to NIST the sync compliance are PDF. The security risks are PDF
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