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Siemens MAGNETOM Skyra Owner's Manual Page 68

Mr system.
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6
Immunity tests
Voltage dips, short
interruptions and volt-
age 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 applying the test level.
T
Siemens AG Healthcare Sector
IEC 60601 test level
<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
Compliance level
Not applicable
<5% U
T
(>95% dip in U
)
T
for 5 s
3 A/m
11/12
Guidance and manufacturer's declaration EMC
Electromagnetic environ-
ment — guidance
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.
Power frequency magnetic
fields should be at levels char-
acteristic of a typical location in
a typical commercial or hospital
environment.

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