IEC 61850 Communications and Systems in Substations is a standard comprised of ten parts which outlines a complete framework for substation automation including EMI (electromagnetic interference) immunity and environmental requirements (IEC 61850-3) for communications networks and systems in substations.
The EMI immunity requirements of IEC 61850-3 are derived from IEC 61000-6-5 - Immunity for Power Station and Substation Environments which defines a set of potentially destructive EMI type tests designed to simulate both continuous and transient EMI phenomena in the substation.
In response to these requirements, Siemens developed technology that withstands all of the EMI type tests required by IEC 61850-3 without experiencing any communications loss or delays. Products featuring this technology also qualify as IEEE 1613 Class 2 Error-Free Devices. This innovation is known as Zero Packet Loss™ technology and it is designed to provide the same level of EMI immunity, performance, and reliability as protective relaying devices.
IEC 61850-3 EMI Immunity Type Tests:
Burst (Fast Transient)
+/- 4kV @ 2,5kHz
D.C. Power ports
A.C. Power ports
Earth ground ports
+/- 4kV line-to-earth, +/- 2kV line-to-line
+/- 2kV line-to-earth, +/- 1kV line-to-line
Induced (Conducted) RFI
40 A/m continous, 1000 A/m for 1s
Voltage Dips & Interrupts
30% for 0,1s, 60% for 0,1s, 100% for 0,05s
30% for 1 period, 60% for 50 periods
100% for 5 periods, 100% for 50 periods2
2,5kV common, 1kV differential mode @ 1MHz
Mains Frequency Voltage
30V Continous, 300V for 1s
Ripple on D.C. Power Supply
2kVac (Fail-Safe Relay output)
5kV (Fail-Safe Relay output)