Electromagnetic Immunity - Faro EDI Manual De Uso

ELECTROmAGNETiC immuNiTy

The lamp EDI is designed to function in the electromagnetic environment specified below. The client or user must ensure its use
Immunity test
Electrostatic discharge (ESD)
IEC/EN61000-4-2
Electrical fast transient/burst
IEC/EN61000-4-4
Surge
IEC/EN61000-4-5
Voltage dips, short interruption
and voltage variation
IEC/EN61000-4-11
Power frequency magnetic field
IEC/EN61000-4-8
Conducted immunity
IEC/EN61000-4-6
Conducted immunity
IEC/EN61000-4-6
Note: Ut is the power-line voltage
Note 1: The highest frequency interval is applied at 80 MHz and 800Mhz.
Note 2: These guidelines might not apply to all situations. Electromagnetic propagation is influenced by absorption and reflection
of structures, objects and persons.
a) ISN bands (industrial, scientific and medical) between 150 kHz and 80 MHz are 6.765 MHz to 6.795 MHz; 13.553 MHz to 13.567
MHz; 26.957 MHz to 27.283 MHz and 40.66 MHz to 40.70 MHz.
b) Compliance levels in ISN bands between 150 kHz and 80 MHz and 80 MHz to 2.5 GHz present a decreasing probability of
portable transmission devices causing interference if inadvertantly taken to the patient area.
Therefore, an additional 10/3 factor has been incorporated into the formula used to calculate the distance between transmittors.
c) Field intensities for fixed transmittors such as base stations for radiotelephones (mobiles and cordless) and cellular mobile radios
on land, CB user equipment, AM and FM transmittors and TV transmittors cannot be theoretically estimated with precision. To
establish an electromagnetic environment caused by fixed RF transmittors, an electromagnetic investigation of the site should be
considered. If field intensity measured at the site of use of the dental unit exceeds the aforementioned applicable compliance level,
normal function of the lamp should be monitored. If any abnormal performance is noticed, additional provisions such as a different
orientation or position of the lamp might be necessary.
d) The field intensity in an interval of frequencies from 150 kHz to 80 MHz should be less than 3 V/m.
Manufacturer's guidelines and statement – Electromagnetic immunity
in the said environment.
Compliance
± 6kV contact
± 8kV air
± 2kV power supply
± 1kV for input/output lines
± 1kV differential mode
± 2kV common mode
< 5% Ut for 0,5 cycle
40% Ut for 05 cycle
70% Ut for 25 cycle
<5% Ut for 5 sec.
3A/m
3Vrms 150kHz to 80MHz
(for non life-supporting
equipment)
3Vrms 80MHz to 2.5GHz
(for non life-supporting
equipment)
Electromagnetic environment - Guidelines
The floor must be in wood, concrete or ceramic. If the floor is
covered with synthetic material, relative humidity should be at
least 30%.
The quality of supply network voltage should be typical of com-
mercial or hospital environments.
The quality of supply network voltage should be typical of com-
mercial or hospital environments.
The quality of supply network voltage should be typical of com-
mercial or hospital environments. If the user of the lamp EDI
requires continuous use even without a supply network, use an
uninterruptible power supply.
Level of magnetic field at the network frequency typical of com-
mercial or hospital environments.
Portable and mobile RF communication devices should not be
used near any part of the dental unit, including cables, unless
they comply with recommended distances calculated with the
applicable equation for transmittor frequency.
Recommended distances:
d = 1.2√P
d = 1.2√P from 80 Mhz to 800 MHz
d = 2.3√P from 800 Mhz to 2.5 GHz
P is the maximum nominal power issued by the transmittor in
Watts (W) depending on the manufacturer of the transmittor,
and d is the recommended distance in metres (m).
The intensity of the fixed RF transmittor field, as established in
an electromagnetic investigation of site a, could be less than the
compliance level of each frequency interval.
There can be interference near devices marked with the
following symbol:
19