Medela Freestyle Flex Mode D'emploi page 52

International regulations (cont.)
52
Voltage dips, short
interruptions and voltage
variations on power
supply input lines
IEC 61000-4-11
Power frequency
(50/60 Hz) magnetic field
IEC 61000-4-8
NOTE: U is the a.c. mains voltage prior to application of the test level.
T
0 % U for 0.5 cycle
T
at 0°, 45°, 90°, 135°,
180°, 225°, 270°, and
315°
0 % U for 1 cycle
T
at 0°
70 % U
T
for 25 cycles at 50 Hz
at 0°
for 30 cycles at 60 Hz
at 0°
0 % U
T
for 250 cycles at 50 Hz
at 0°
for 300 cycles at 60 Hz
at 0°
30 A/m
0 % U for 0.5 cycle
T
at 0°, 45°, 90°, 135°,
180°, 225°, 270°, and
315°
0 % U for 1 cycle
T
at 0°
70 % U
T
for 25 cycles at 50 Hz
at 0°
for 30 cycles at 60 Hz
at 0°
0 % U
T
for 250 cycles at 50 Hz
at 0°
for 300 cycles at 60 Hz
at 0°
30 A/m
Mains power quality
should be that of a
typical commercial or
hospital environment.
If the user of the breast
pump requires continued
operation during power
mains interruptions, it is
recommended that the
breast pump be powered
from an uninterruptible
power supply or a
battery.
It may be necessary to
position the breast pump
further from sources
of power frequency
magnetic fields or to
install magnetic shielding.
The power frequency
magnetic field should be
measured in the intended
installation location to
assure that it is sufficiently
low.