Oakworks 300 Series Procedure Chair Rev.B - Manual (Page 19)

16
SPeCIfICATIOnS
Guidance and manufacturer’s declaration - electromagnetic immunity
The chair is intended for use in the electromagnetic environment specified 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 floors 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 differential mode
±2 kV common mode
±1 kV differential mode
±2 kV common mode
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 field IEC
61000-4-8
3 A / m 3 A / m
Power frequency magnetic
fields should be at levels
characteristic of a typical
location in a typical com-
mercial or hospital environ-
ment.
NOTe U
T
is the a.c. mains voltage prior to application of the test level.