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The following table shows the most important standards in the field of immunity to interference.

The IEC 1000 or EN 61000 series of standards are planned as central EMC standards into which

all EMC regulations (e.g. IEC 801, IEC 555) are to be integrated in the next few years.

2.5

Propagation of conducted interference

In order to be able to choose suitable interference suppression components, the way in which con-

Fig. 8

Common-mode and differential-mode interference

Standard

Test characteristics

Phenomena

Conducted interference

EN 61000-4-4

IEC 61000-4-4

5/50 ns (single impulse)

15 kHz burst

Burst

Cause: switching processes

EN 61000-4-5

IEC 61000-4-5

1,2 / 50 ms (open-circuit voltage)

8 / 20 ms (short-circuit current)

Surge (high-energy transients)

Cause: lightning strikes mains

lines, switching processes

EN 61000-4-6 (ENV 50141)

IEC 801-6

1 V, 3 V, 10 V

150 kHz … 80 MHz

High-frequency coupling

Narrow-band interference

Radiated interference

EN 61000-4-3 (ENV 50140)

IEC 801-3

3 V/m, 10 V/m

80 … 1000 MHz

High-frequency

interference fields

Electrostatic discharge (ESD)

EN 61000-4-2

IEC 61000-4-2

Up to 8 kV

5 / 50 ns

Electrostatic discharge

Voltage dips, short interruptions and variations

EN 61000-4-11

IEC 61000-4-11

0,4

1 … 50 ms

0,7

optional

10 ms

Electrostatic discharge

R: Resistance

Common-mode

interference current

Differential-mode

interference current

Interference

source

Disturbed

equipment

General Technical Information