EMC GUIDANCE
EMC GUIDANCE
22
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Guidance and manufacturer’s declaration – electromagnetic immunity
IMMUNITY test
±6 kV contact
±8 kV air
±6 kV contact
±8 kV air
±2 kV for
power supply lines
Not applicable
±1 kV line(s)
to line(s)
±2 kV line(s)
to earth
<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% dip in U
T
)
for 5 s
3A/m
NOTE U
T
is the a.c. mains voltage prior to application of the test level.
Table 2 Guidance and MANUFACTURER’s declaration – electromagnetic
IMMUNITY – for all ME EQUIPMENT and ME SYSTEMS
IEC 60601 test level Compliance level
Electrostatic
discharge (ESD)
IEC 61000-4-2
Electromagnetic
environment - guidance
Floors should be wood,
concrete or ceramic tile. If
floors are covered with
synthetic material, the
relative humidity should be
at least 30%.
Power frequency magnetic
fields should be at levels
characteristic of a typical
location in a typical
commercial or hospital
environment.
3A/m
Power frequency
(50/60Hz)
magnetic field
IEC 61000-4-8
Voltage dips,
short interruptions
and voltage
variations on
power supply
input lines
IEC 61000-4-11
Electrical fast
transient/burst
IEC 61000-4-4
Surge IEC
61000-4-5
The device is intended for use in the electromagnetic environment specified below.
The customer or the user of the device should assure that it is used in such an
environment
±1 kV for
input/output lines
Not applicable
Not applicable
Mains power quality should
be that of a typical
commercial or hospital
environment.
Mains power quality should
be that of a typical
commercial or hospital
environment.
Mains power quality should
be that of a typical
commercial or hospital
environment. If the user of
the device requires
continued operation during
power mains interruptions,
it is recommended that the
device be powered from an
uninterruptible power supply
or a battery.
Table 4 Guidance and MANUFACTURER’s declaration – electromagnetic IMMUNITY –
for ME EQUIPMENT and ME SYSTEMS that are not LIFE-SUPPORTING
Guidance and manufacturer’s declaration – electromagnetic immunity
IMMUNITY test
Not applicable
3 V/m
Compliance
level
IEC 60601
TEST LEVEL
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to
2.5 GHz
3 Vrms
150 kHz to
80 MHz
Electromagnetic environment -
guidance
Portable and mobile RF communications
equipment should be used no closer to
any part of the device, including
cables, than the recommended
separation distance calculated from the
equation applicable to the frequency of
the transmitter.
Recommended separation distance
The device is intended for use in the electromagnetic environment specified below.
The customer or the user of the device should assure that it is used in such an environment.
where
P
is the maximum output power
rating of the transmitter in watts (W)
according to the transmitter manufacturer
and
d
is the recommended separation
distance in metres (m).
Field strengths from fixed RF
transmitters, as determined by an
electromagnetic site survey, should be
less than the compliance level in each
frequency range.
a
b
Interference may occur in the vicinity of
equipment marked with the following
symbol:
P
=
d
P
=
d
80 MHz to 800 MHz
P
=
d
2,3
800 MHz to 2,5 GHz
1,2
NOTE 1
At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2
These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and reflection from structures, objects
and people.
a
Field strengths from fixed transmitters, such as base stations for radio (cellular / cordless) telephones
and land mobile radios, amateur radio, AM and FM radio broad-cast and TV broadcast cannot be
predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF
transmitters, an electromagnetic site survey should be considered. If the measured field strength in
the location in which the device is used exceeds the applicable RF compliance level above, the
device should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as re-orienting or relocating the device.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than
3V/m.
b
1,2
