430-11902-02, Rev M
IMMUNITY EMC SPECIFICATIONS
Table 14-6 IEC EMC Specifications (Immunity)
Guidance and Manufacturer’s Declaration – Electromagnetic Immunity
The Estech COBRA™ Electrosurgical HF Generator is intended for use in the
electromagnetic environment specified below. The customer or the user of the
Estech COBRA™ Electrosurgical HF Generator 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
±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.
±1 kV for
input/output
lines
Surge
IEC 61000-4-5
±1 kV
differential
mode
±1 kV
differential mode
±2 kV common
Mains power quality should
be that of a typical
commercial or hospital
environment.
±2 kV
mode
common
mode
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
cycles
40% UT
(60% dip in
UT) for 5
cycles
70% UT
(30% dip in
UT) for 25
cycles
<5% UT
<5% UT (>95%
dip in UT) for 0.5
cycles
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
seconds
Mains power quality should
be that of a typical
commercial or hospital
environment. If the user of
the Estech COBRA™
Electrosurgical HF
Generator requires
continued operation during
power mains interruptions,
it is recommended that the
Estech COBRA™
Electrosurgical HF
Generator be powered from
an uninterruptible power
supply or battery.
(>95% dip in
UT) for 5
seconds
