The IED supports IEC 61850 process bus with IEC 61850 9-2 LE or IEC 61869-9 sampled values of analog neutral and phase voltages. Receiving of sampled values of analog neutral and phase currents is supported in addition to the voltages. The neutral voltage is derived from the phase voltages when there is no physical neutral voltage input available in the IED. The SSC600 supports receiving sampled measured values from up to 30 bay level IEDs or Merging Units. IEDs with process bus based applications use IEEE 1588 v2 Precision Time Protocol (PTP) according to IEEE C37.238-2011 Power Profile or IEC 61850-9-3 Power Utility Profile for high accuracy time synchronization.
The IED can receive sampled values measurements as either IEC 61850-9-2 LE using the SVRECEIVE_LE function or IEC 61869-9 using the SVRECEIVE_61869 function. The selection is done based on the sending IEDs capabilities.
In addition to the process bus, the IED supports forwarding the received sampled values as routable sampled values over the protection communication port. The devices on the protection communication port that produce or consume the routable SV measurements should be synchronized to the same IEEE 1588 v2 grandmaster clock.