Electromagnetic Noise Immunity - KERN and SOHN MTA 400K-1M Notice D'utilisation

8.3 Electromagnetic noise immunity

Guidelines and manufacturer's declaration - electromagnetic noise immunity
The personal weighing scales MTA-M are designed for use in an electromagnetic environment that
meets the requirements stated below. The customer or user of the personal weighing scales MTA-M
must ensure that operation takes place in such an environment.
Noise immunity tests
Discharge static
electricity (DSE)
acc. to IEC 61000-4-2
Fast transient electrical
disturbances / bursts
acc. to IEC 61000-4-4
Impulse voltages /
surges
acc. to IEC 61000-4-5
Voltage dips, short-term
disruptions and
fluctuations in supply
voltage
acc. to IEC 61000-4-11
Magnetic field for supply
frequency
(50/60 Hz)
acc. to IEC 61000-4-8
NOTE equals AC line voltage prior to application of test level.
16
IEC 60601 test level
± 6 kV contact discharge
± 8 kV air discharge
± 2 kV for power lines
+ 1 kV for input and
output lines
± 1 kV voltage
Live wire - live wire
± 2 kV voltage
Live wire - earth
< 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
3 A/m
Conformity Electromagnetic
environment - guideline
± 6 kV Floors should be made of
wood or concrete or tiled with
± 8 kV ceramic tiles. If floors are
covered with synthetic
material, relative air humidity
must be at least 30%.
± 2 kV The quality of the supply
voltage should match that of
+ 1 kV the typical business or
hospital environment.
± 1 kV The quality of the supply
voltage should match that of
the typical business or
Inapplicable hospital environment.
Compliance The quality of the supply
with voltage should match that of
requirements the typical business or
under all hospital environment. Where
postulated the user of the personal
conditions weighing scales MTA-M
demands continuous
operation even during
Controlled disruptions to the power
switch off supply, we recommend
Return to powering the personal
undisturbed weighing scales MTA-M by
situation no-break power supply or a
after user battery.
intervention.
3 A/m Magnetic fields for the supply
frequency should match the
50/60 Hz typical values found in the
particular business or hospital
environment.
MTA-M-BA-e-1612