34
Voltage
dips, short
interruptions
and voltage
variations on
power supply
input lines IEC
61000-4-
11
<5 % Ur
(>95% dip
in UT for O5
cycle 40%
Ur (60% dip
in UT for 5
cycles 70%
Ur (30% dip
in UT for 25
cycles
<5% Ur (>95
% dip in UT )
for 5 sec
<5% UT (>95%
dip in UT.) for O5 cycle
40 % UT (60%
dip in UT for 5 cycles
70%UT (30% dip in
UT) for 25
cycles <5% UT (>95 % dip
in UT) for 5 sec
Voltage should be that of
a typical commerc1al or
hospital environment If the
user of the model require
continued operation during
voltage interruptions, it
is recommended that the
model be powered from
an uninterruptible power
supply or a battery.
Power
frequency
(50/60 Hz)
magnetic field
IEC 61000-4-8
3A/m
3A/m
Power frequency magnetic
fields should be at levels
characteristic of a typical
location in a typical
commercial or hospital
environment.
NOTE
UT is the ac. main voltage prior to application of the test level.