Fast-transient
immunity test/
Bursts acc. to IEC
61000-4-4
± 2 kV for power
supply lines
± 1 kV for input
and output lines
± 1 kV for power
supply lines
Not applicable
The quality of the supply
voltage should correspond
to that in typical business or
hospital surroundings.
Surges
acc. to IEC 61000-
4-5
± 1 kV voltage
Outer conductor -
outer conductor
± 2 kV voltage
outer conductor
- earth
± 1 kV voltage
Outer conductor -
outer conductor
Not applicable
The quality of the supply
voltage should correspond
to that in typical business or
hospital surroundings.
Voltage dips, short
interrupons
and uctuaons in
the supply voltage
Acc. to IEC 61000-
4-11
< 5 % Ut
< (> 95 % dip in Ut
) for 1/2 period
40 % Ut (60 %
dip in Ut ) for 5
periods
70 % Ut (30 %
dip in Ut ) for 25
periods
< 5 % Ut (> 95 %
dip in Ut ) for 5 s
0 % Ut
< (> 95 % dip in Ut
) for 1/2 period
40 % Ut (60 %
dip in Ut ) for 5
periods
70 % Ut (30 %
dip in Ut ) for 25
periods
0 % Ut (> 95 % dip
in Ut ) for 5 s
The quality of the supply
voltage should correspond
to that in typical business or
hospital surroundings. If the
user of the iMRS requires
uninterrupted funconing,
even when interrupons
in the power supply occur,
it is recommended to feed
the iMRS from an uninter-
ruptable power supply or a
baery.
Magnec eld at a
supply frequency
(50/60 Hz) acc. to
IEC 61000-4-8
3 A/m 3 A/m Magnec elds at mains fre-
quency should correspond to
values typical of a business
or hospital environment.
Remark: Ut is the mains AC voltage before the applicaon of the test level.