19
Immunity
test
Conformity level
Electromagnetic environment -orientations
Test level
IEC 60601
Voltage drops,
short interruptions
and voltage
variations in
power input lines
IEC 61000-4-11
Magnetic field at
power frequency
(50/60 Hz)
IEC 61000-4-8
< 5% U
(> 95% voltage drops
in U ) by 0,5 cycle
40% U
(60% of voltage drops
in U )by 5 cycles
70% U
(30% of voltage drops
in U ) by 25 cycles
< 5% U
(> 95% of voltage
drops in U ) by 5
seconds
3 A/m
3 A/m
< 5% U
(> 95 % voltage drops
in U ) by 0,5 cycle
40% U
(60% of voltage drops
in U ) by 5 cycles
70% U
(30% of voltage drops
in U ) by 25 cycles
< 5% U
(> 95% of voltage
drops in U ) by 5
seconds
The quality of power supply should be
that of a typical commercial or hospital
environment. If the user’s equipment requires
continued operation during power failure, it
is recommended the equipment be powered
by an uninterruptible power supply or battery.
Magnetic fields at power frequency should be
at the level of a typical location in a typical
commercial or hospital environment.
NOTE: U
T
is the C.A. voltage before applying the test
ELECTROMAGNETIC COMPATIBILITY GUIDANCE
