Appendix B EMC Guidance and Manufacturer’s Declaration
148 Basic User Manual
Voltage dips
and Short
interruptions
IEC 61000-4-11
<5 % U
T
(>95 % dip in U
T
) for
0.5 period
40 % U
T
(60 % dip in U
T
) for 5
periods
70 % U
T
(30 % dip in U
T
) for 25
periods
<5 % U
T
(>95 % dip in U
T
) for
250 periods
<5 % U
T
(>95 % dip in U
T
) for
0.5 period
40 % U
T
(60 % dip in U
T
) for
5 periods
70 % U
T
(30 % dip in U
T
) for
25 periods
<5 % U
T
(>95 % dip in U
T
) for
250 periods
Mains power quality should be
that of a typical commercial or
hospital environment. If the user of
the equipment requires continued
operation during power mains
interruptions, it is recommended for
the equipment to be powered from an
uninterruptible power supply.
Power frequency
(50/60Hz)
magnetic field
IEC 61000-4-8
3 A/m 3 A/m Power frequency magnetic fields
should be at levels characteristic of a
typical location in a typical commercial
or hospital environment.
NOTE: U
T
is the a.c. mains voltage prior to application of the test level.