Dentsply Sirona CEREC AC, Operating Instructions Manual

Page: 25 / 92

Dentsply Sirona
Operating Instructions CEREC AC Connect 5 Technical information
5.3 Electromagnetic compatibility
64 32 087 D3492
D3492.201.07.24.02 07.2018
25
5.3.2 Interference immunity
The UNIT is intended for operation in the electromagnetic environment
specified below.
The customer or user of the UNIT should make sure that it is used in
such an environment.
Interference immu-
nity tests IEC 60601-1-2 Test level Compliance level Electromagnetic environment –
guidelines
Electrostatic dis-
charge (ESD) ac-
cording to 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 tran-
sient/burst accord-
ing to
IEC 61000-4-4 ± 1 kV for input and out-
put lines
± 2 kV for power supply
lines
± 1 kV for input and
output lines
± 2 kV for power supply
lines
The quality of the line power supply
should be that of a typical commer-
cial or hospital environment.
Surge voltages
according to IEC
61000-4-5 ± 1 kV differential mode
voltage
± 2 kV common mode
voltage
± 1 kV differential
mode voltage
± 2 kV common mode
voltage
The quality of the line power supply
should be that of a typical commer-
cial or hospital environment.
Voltage dips, short
interruptions and
variations of the
power supply
according to IEC
61000-4-11 <5% U
T
for ½ period
(>95% dip of U
T
)
40% U
T
for 5 periods
(60% dip of U
T
)
70% U
T
for 25 periods
(30% dip of U
T
)
<5% U
T
for 5sec. (>95%
dip of U
T
<5% U
T
for ½ period
(>95% dip of U
T
)
40% U
T
for 5 periods
(60% dip of U
T
)
70% U
T
for 25 periods
(30% dip of U
T
)
<5% U
T
for 5sec.
(>95% dip of U
T
The quality of the line power supply
should be that of a typical commer-
cial or hospital environment.
Continued operation of the UNIT is
possible following interruptions of
the power supply, since the UNIT is
powered by an uninterruptible power
supply backed up by a storage bat-
tery.
Magnetic field of
power frequencies
(50/60 Hz) accord-
ing to
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 environment.
Note: U
T
is the AC supply voltage prior to application of the test level.
Portable and mobile radio equip-
ment must not be used within the
recommended working clearance
from the UNIT and its cables, which
is calculated based on the equation
suitable for the relevant transmission
frequency.
Recommended working clearance: