20
ELECTROMAGNETIC COMPATIBILITY
Voltage dips,
short
interruptions and
voltage variations
on power supply
input lines
IEC 61000-4-11
5% UT
(>95% dip in
UT)
for 0.5 cycle
40% UT
(60% dip in
UT)
for 5 cycle
70% UT
(30% dip in
UT)
for 25 cycle
<5% UT
(>95% dip in
UT)
for 5s
5% UT
(>95% dip in
UT)
for 0.5 cycle
40% UT
(60% dip in UT)
for 5 cycle
70% UT
(30% dip in UT)
for 25 cycle
<5% UT
(>95% dip in
UT)
for 5s
Mains power quality should
be that of a typical
commercial or hospital
environment.
Power frequency
(50/60Hz)
magnetic field
IEC 61000-4-8
30 A/m
50Hz/60Hz
30 A/m
50Hz/60Hz
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.