KERN & SOHN MPE 250K100HM - Manual (Page 19)

8.3 Electromagnetic noise immunity
Guidelines and manufacturer’s declaration - electromagnetic noise immunity
The floor scales MPC/MPE is designed for use in an electromagnetic environment that meets the
requirements stated below. The customer or user of the medical electrical device must ensure that
operation takes place in such an environment.
Noise immunity tests IEC 60601 test level Conformity Electromagnetic
environment - guideline
Discharge static
electricity (DSE)
as per IEC 61000-4-2 ± 6 kV contact discharge
± 8 kV air discharge ± 6 kV
± 8 kV Floors should be made of
wood or concrete or tiled with
ceramic tiles. If floors are
covered with synthetic
material, relative air humidity
must be at least 30%.
Fast transient electrical
disturbances / bursts
as per IEC 61000-4-4 ± 2 kV for power lines
+ 1 kV for input and
output lines ± 2 kV
+ 1 kV The quality of the supply
voltage should match that of
the typical business or hospital
environment.
Impulse voltages /
surges
as per IEC 61000-4-5 ± 1 kV voltage
Live wire - live wire
± 2 kV voltage
Live wire - earth ± 1 kV
Inapplicable The quality of the supply
voltage should match that of
the typical business or hospital
environment.
Voltage dips, short-term
disruptions and
fluctuations in supply
voltage
as per IEC 61000-4-11 < 5 %
(> 95 % dip of )
for ½ period
40 %
(> 60 % dip of )
for 5 periods
70 %
(> 30 % dip of )
for 25 periods
< 5 %
(> 95 % dip of )
for 5 s
Compliance
with
requirements
under all
postulated
conditions
Controlled
switch off
Return to
undisturbed
situation after
user
intervention. The quality of the supply
voltage should match that of
the typical business or hospital
environment. Where the user
of the medical device demands
continuous operation even
during disruptions to the power
supply, we recommend
powering the floor scale
MPC/MPE by no-break power
supply or battery.
Magnetic field for supply
frequency
(50/60 Hz)
as per IEC 61000-4-8 3 A/m 3 A/m
50/60 Hz Magnetic fields for the supply
frequency should match the
typical values found in the
particular business or hospital
environment.
NOTE equals AC line voltage prior to application of test level.
MPC_M / MPE_HM / MPE_PM-BA-e-1414 19