3M Bair Hugger 775 Operator's Manual - page 14
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3M™Bair Hugger™ Model 775 Warming Unit – Operator’s Manual
CLASSIFICATION
Guidance and manufacturer’s declaration – electromagnetic emissions
The Model 775 warming unit is intended for use in the electromagnetic environment specified below. The customer or the user of the Model
775 warming unit should assure that it is used in such an environment.
Emissions test
Compliance
Electromagnetic environment ‑ guidance
RF emissions
CISPR 11
Group 1
The Model 775 warming unit uses RF energy only for its internal function. Therefore,
its RF emissions are very low and are not likely to cause any interference in nearby
electronic equipment.
RF emissions
CISPR 11
Class B
The Model 775 warming unit is suitable for use in all establishments, including domestic
establishments and those directly connected to the public low-voltage power supply
network that supplies buildings used for domestic purposes.
Harmonic emissions
IEC 61000-3-2
Class A
Voltage fluctuations/
Flicker emissions
IEC 61000-3-3
Complies
Guidance and manufacturer’s declaration – electromagnetic immunity
The Model 775 warming unit is intended for use in the electromagnetic environment specified below. The customer or the user of the Model
775 warming unit 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
Mains power quality should be that of a typical commercial or
hospital environment.
Surge
IEC 61000-4-5
±1 kV line to line
±2 kV line(s) to earth
±1 kV line to line
±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% dip in U
T
)
for 5 sec
<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 sec
Mains power quality should be that of a typical commercial or
hospital environment. If the user of the Model 775 warming
unit requires continued operation during power mains
interruptions, it is recommended that the Model 775 warming
unit 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.