Medela Symphony Mode D'emploi page 46

20. EMC / Technical Description (cont.)
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. voltage prior to application of the test level.
T
46
<5 % U
T
(>95 % dip in U
)
T
for 0,5 cycle
40 % U
T
(60 % dip in U
)
T
for 5 cycles
70 % U
T
(30 % dip in U
)
T
for 25 cycles
<5 % U
T
(>95 % dip in U
)
T
for 5 s
3 A/m
Mains Power quality
<5 % U
should be that of a typical
T
(>95 % dip in U
commercial or hospital
)
T
for 0,5 cycle environment.
40 % U
If the user of the
T
(60 % dip in U
) Symphony electric breast
T
pump requires continued
for 5 cycles
70 % U
operation during power
T
(30 % dip in U
) interruptions, it is
T
for 25 cycles recommended that the
<5 % U
Symphony electric breast
T
(>95 % dip in U
pump is powered from
)
T
for 5 s an uninterruptible power
supply or a battery.
Power frequency
magnetic fields should be
at levels characteristic of a
30 A/m
typical location in a typical
commercial or hospital
environment.