Operating instructions

Page 27 of 34
7.5.2 Guidance and Manufacturer’s Declaration – Electromagnetic
Immunity
Guidance and Manufacturer’s Declaration – Electromagnetic Immunity
The Sentry/ST System is intended for use in the electromagnetic environment specified
below. The customer or the user of the Sentry/ST System 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
Not Applicable
Mains power quality should be
that of a typical commercial or
hospital environment.
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.
Voltage dips,
short
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 Sentry/ST System requires
continued operation during power
mains interruptions, it is
recommended that the
Sentry1250/ST-1200/1400
controller 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:UT is the a.c. mains voltage prior to application of the test level.