User guide

13
SPECIFICATIONS
Guidance and manufacturer’s declaration - electromagnetic immunity
The chair is intended for use in the electromagnetic environment specied below. The customer or the
user of the chair should assure that it is used in such an environment.
Immunity Test IEC 60601 test level Compliance level
Electromagnetic
environment - guidance
Electrostatic discharge
(ESD)
IEC 61000-4-2
±6 kV contact
±8 kV air
±6 kV contact
±8 kV air
Floors should be wood,
concrete or ceramic tile.
If oors are covered with
synthetic material, the rela-
tive humidity should be at
least 30 %.
Electrical fast transient/
burst
IEC 61000-4-4
±2 kV for power supply lines
±1 kV for input/output lines
±2 kV for power supply lines
Not applicable
Mains power quality should
be that of a typical com-
mercial or hospital environ-
ment.
Surge
IEC 61000-4-5
±1 kV line(s) to line(s)
±2 kV line(s) to earth
±1 kV line(s) to line(s)
±2 kV line(s) to earth
Mains power quality should
be that of a typical com-
mercial or hospital environ-
ment.
Voltage dips, short inter-
ruptions 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 cycles
70 % UT
(30 % dip in UT)
for 25 cycles
<5 % UT
(>95 % dip in UT)
for 5 sec
<5 % UT
(>95 % dip in UT)
for 0,5 cycle
40 % UT
(60 % dip in UT)
for 5 cycles
70 % UT
(30 % dip in UT)
for 25 cycles
<5 % UT
(>95 % dip in UT)
for 5 sec
Mains power quality should
be that of a typical com-
mercial or hospital environ-
ment. If the user of the chair
requires continued opera-
tion during power mains
interruptions, it is recom-
mended that the chair be
powered from an uninter-
ruptible power supply or a
battery.
Power frequency (50/60
Hz) magnetic eld IEC
61000-4-8
3 A / m 3 A / m
Power frequency magnetic
elds should be at levels
characteristic of a typical
location in a typical com-
mercial or hospital environ-
ment.
NOTE UT is the a.c. mains voltage prior to application of the test level.