IEC 61850 Protocol

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:

TEST

Description

Test Levels

Security Levels

IEC 61000-4-2

ESD

Enclosure Contact

+/- 8kV

4

Enclosure Air

+/- 15kV

4

IEC 61000-4-3

Radiated RFI

Enclosure ports

10 V/m

X

IEC 61000-4-4

Burst (Fast Transient)

Signal Ports

+/- 4kV @ 2,5kHz

X

D.C. Power ports

+/- 4kV

4

A.C. Power ports

+/- 4kV

4

Earth ground ports 3

+/- 4kV

4

IEC 61000-4-5

Surge

Signal Ports

+/- 4kV line-to-earth, +/- 2kV line-to-line

4

D.C. Power ports

+/- 2kV line-to-earth, +/- 1kV line-to-line

3

A.C. Power ports

+/- 4kV line-to-earth, +/- 2kV line-to-line

4

IEC 61000-4-6

Induced (Conducted) RFI

Signal Ports

10V

3

D.C. Power ports

10V

3

A.C. Power ports

10V

3

Earth ground ports 3

10V

3

IEC 61000-4-8

Magnetic Field

Enclosure ports

40 A/m continous, 1000 A/m for 1s

N/A

IEC 61000-4-29

Voltage Dips & Interrupts

D.C. Power ports

30% for 0,1s, 60% for 0,1s, 100% for 0,05s

N/A

A.C. Power ports

30% for 1 period, 60% for 50 periods

N/A

IEC 61000-4-11

100% for 5 periods, 100% for 50 periods2

N/A

IEC 61000-4-12

Damped Oscillatory

Signal Ports

2,5kV common, 1kV differential mode @ 1MHz

3

D.C. Power ports

2,5kV common, 1kV differential mode @ 1MHz

3

A.C. Power ports

2,5kV common, 1kV differential mode @ 1MHz

3

IEC 61000-4-16

Mains Frequency Voltage

Signal Ports

30V Continous, 300V for 1s

4

D.C. Power ports

30V Continous, 300V for 1s

4

IEC 61000-4-17

Ripple on D.C. Power Supply

D.C. Power ports

10%

3

IEC 60255-5

Dialectric Strength

Signal Ports

2kVac (Fail-Safe Relay output)

N/A

D.C. Power ports

2kVac

N/A

A.C. Power ports

2kVac

N/A

IEC 60255-5

H.V. Impulse

Signal Ports

5kV (Fail-Safe Relay output)

N/A

D.C. Power ports

5kV

N/A

A.C. Power ports

5kV

N/A