Siemens MAGNETOM Skyra - Page 68

Siemens AG Healthcare Sector 11/12 Guidance and manufacturer’s declaration EMC
6
Voltage dips, short
interruptions and volt-
age variations on
power supply input
lines
IEC 61000-4-11
<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
Not applicable Mains power quality should be
that of a typical commercial or
hospital environment. If the
user of the equipment or sys-
tem requires continued opera-
tion during power mains
interruptions, it is recom-
mended that the equipment or
system be powered from an
uninterruptible power supply.
The MR system has a rated
input current of more than
16 A per phase.
<5% U
T
(>95% dip in U
T
)
for 5 s
<5% U
T
(>95% dip in U
T
)
for 5 s
—
Power frequency
(50/60 Hz) magnetic
field
IEC 61000-4-8
3 A/m 3 A/m Power frequency magnetic
fields should be at levels char-
acteristic of a typical location in
a typical commercial or hospital
environment.
Note: U
T
is the a.c. mains voltage prior to applying the test level.
Immunity tests IEC 60601 test level Compliance level
Electromagnetic environ-
ment — guidance