Hoffrichter CPAP - Page 113

Manufacturer’s declaration on electromagnetic compatibility 113
Guidance and manufacturer‘s declaration – electromagnetic immunity
Voltage dips, short
interruptions and volt-
age variations on
power supply input
lines
IEC 61000-4-11
> 95 % clip in
U
T
/ 0.5 cycles
60 % clip in
U
T
/ 5 cycles
30 % clip in
U
T
/ 25 cycles
> 95 % clip in
U
T
/ 5 s
> 95 % clip in
U
T
/ 0.5 cycles
60 % clip in
U
T
/ 5 cycles
30 % clip in
U
T
/ 25 cycles
> 95 % clip in
U
T
/ 5 s
Mains power quality should
be that of a typical commer-
cial or hospital environment. If
the user of the point 2 requires
continued operation during
power mains interruption, it is
recommended that the (Equip-
ment or System) is powered
from an UPS or a battery.
Magnetic fi eld power
frequency (50/60) Hz
magnetic fi eld
IEC 61000-4-8
3 A/m 3 A/m
Power frequency magnetic
fi elds should be at levels char-
acteristic of a typical location
in a typical commercial or hos-
pital environment.
Conducted RF
IEC 61000-4-6
V
1
= 3 V
150 kHz – 80 MHz
3 V Portable and mobile commu-
nications equipment should be
used no closer to any part of
the point 2, including cables,
than the recommended sep-
aration distance calculated
from the equation applicable
to the frequency of the trans-
mitter:
D = 1.17 √P for V
1
= 3 V