Medela Symphony Mode D'emploi page 40

19. 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 fi eld
IEC 61000-4-8
NOTE U
is the a.c. voltage prior to application of the test level.
T
40
<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
should be that of a typical
<5 % U
commercial or hospital
T
(>95 % dip in U
environment.
)
T
for 0,5 cycle If the user of the
40 % U
Symphony electric
T
(60 % dip in U
) breastpump requires
T
continued operation
for 5 cycles
70 % U
during power
T
(30 % dip in U
) interruptions, it is
T
for 25 cycles recommended
<5 % U
that the Symphony
T
(>95 % dip in U
electric breastpump
)
T
for 5 s is powered from an
uninterruptible power
supply or a battery.
Power frequency
magnetic fi elds should be
at levels characteristic of a
30 A/m
typical location in a typical
commercial or hospital
environment.