Chison Q9, Руководство по эксплуатации, Страница: 198 / 201

Q9 Digital Color Doppler Ultrasound System
192
Surge
IEC 61000-4-5
±1 kV line(s) to
line(s)
±2 kV line(s) to earth
±1 kV line(s) to
line(s)
±2 kV line(s) to earth
Mains power quality
should be that
of a typical commercial or
hospital
environment.
interruptions
and
voltage
variations
on power
supply
input lines
IEC
61000-4-11
<5 % UT
(>95 % dip in UT)
for 0,5 cycle
40 % UT
(60 % dip in UT)
for 5 cycles
70 % UT
(30 % dip in UT)
for 25 cycles
<5 % UT
(>95 % dip in UT)
for 5 sec
<5 % UT
(>95 % dip in UT)
for 0,5 cycle
40 % UT
(60 % dip in UT)
for 5 cycles
70 % UT
(30 % dip in UT)
for 25 cycles
<5 % UT
(>95 % dip in UT)
for 5 sec
Mains power quality
should be that
of a typical commercial or
hospital
environment. If the user of
the
Q9 requires
continued operation during
power
mains interruptions, it is
recommended that the Q9
be powered from an
uninterruptible power
supply or a
battery.
Power
frequency
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 UT is the a.c. mains voltage prior to application of the test level.