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FRESENIUS MEDICAL CARE
MEDICAL TREATMENT CHAIR
INSTRUCTION MANUAL - T688B Series
Page 18 of 20
IFU T688B V1 May 2019
Guidance and MANUFA
CTURER’S declaration – electromagnetic IMMUNITY
Guid
ance and manufacturer’s declaration – electromagnetic immunity
The
T688B Series Chair
is intended for use in the electromagnetic environment specified below. The
customer or the user of the
T688B Series 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 relative 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
± 1 kV for
input/output
Lines not applicable
Mains power quality should be
that of a typical commercial or
hospital environment.
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 commercial or
hospital environment.
Voltage dips, short
interruptions and
voltage variations
on power supply
input lines
IEC 61000-4-11
<5 %
U
T
(>95 % dip in
U
T)
for 0,5 cycle
40 %
U
T
(60 % dip in
U
T)
for 5 cycles
70 %
U
T
(30 % dip in
U
T)
for 25 cycles
<5 %
U
T
(>95 %
<5 %
U
T
(>95 % dip in
U
T)
for 0,5 cycle
40 %
U
T
(60 % dip in
U
T)
for 5 cycles
70 %
U
T
(30 % dip in
U
T)
for 25 cycles
<5 %
U
T
(>95 %
Mains power quality should be
that of a typical commercial or
hospital environment. If the user
of the
T688B Series Chair
requires continued operation
during power mains
interruptions, it is recommended
that the
T688B Series Chair
be
powered from an uninterruptible
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
commercial or hospital
environment.
NOTE
U
T is the a.c. mains voltage prior to application of the test level.