Chapter 9. Electromagnetic Compatibility
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Voltage dips,
short
interruptions and
voltage
variations on
power supply
input lines
IEC61000-4-11
0% U
T
for 0.5 cycle,
at 0°,45°,90°,135°,
180°,225°,270°and 315°
0% U
T
for 1 cycles and
70% U
T
for 25/30 cycles
at 0°
0% U
T
for 250 cycles at 0°
0% U
T
for 0.5 cycle,
at 0°,45°,90°,135°,
180°,225°,270°and 315°
0% U
T
for 1 cycles and
70% U
T
for 25/30 cycles
at 0°
0% U
T
for 250 cycles at 0°
Mains power quality should be that of
a typical commercial and/or hospital environment.
If the user of the product requires continued
operation during power mains interruptions,
it is recommended that the product be powered
from an uninterruptible power supply or a battery.
Magnetic field
due to mains
frequency (50/60Hz)
IEC 61000-4-8
Conducted
disturbances
induced by RF fields
IEC 61000-4-6
Magnetic field
due to mains
frequency (50/60Hz)
IEC 61000-4-8
30 A/m
3 Vrms 150 kHz
to 80 MHz
6 Vrms in ISM bands
150 kHz to 80 MHz
80% AM at 1 kHz
3V/m
80 MHz
to 2.7 GHz
80% AM
at 1 kHz
3V/m
80 MHz
to 2.7 GHz
80% AM
at 1 kHz
3 Vrms 150 kHz
to 80 MHz
6 Vrms in ISM bands
150 kHz to 80 MHz
80% AM at 1 kHz
30 A/m
Magnetic fields generated by the mains frequency
should be at levels characteristic of a typical location
in a typical commercial or hospital environment.
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey
should be less than the compliance level
in each frequency range.
Interference may occur in the vicinity of equipment
marked with the following.
Immunity Test
IEC 60601- Level
Compliance Level
Electromagnetic
Environment Guidance
a
NOTE: U
T
is the AC mains voltage prior to application of the test level.
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones
and land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be
predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF
transmitters, an electromagnetic site survey should be considered, if the measured field strength in
the location in which the product is used exceeds the applicable RF compliance level above, the
product should be observed, additional measures may be necessary, such as reorienting or relocating
the product.
a