4 | Safety Considerations
Thermo Fisher Scientific ULT Freezers
ELECTROMAGNETIC COMPATIBILITY (EMC)
Guidance and Manufacturer’s Declaration—Electromagnetic Emissions
Emission Test
Compliance
Electromagnetic Environment Guidance
RF emissions
CISPR 11
Group 1
The EMISSIONS characteristics of the freezer make it suitable for use in commer
-
cial, industrial or institutional occupancies (CISPR 11 class A). If it is used in a resi
-
dential environment (for which CISPR 11 class B is normally required), this
equipment might not offer adequate protection to radio-frequency communication
services. The user might need to take mitigation measures, such as relocating or
reorienting the equipment.
RF emissions
CISPR 11
Class A
Guidance and Manufacturer’s Declaration—Electromagnetic Immunity
Immunity Test
IEC 60601-1-2 Test
Level
Compliance Level
Electromagnetic Environment Guidance
Electrostatic
discharge (ESD)
IEC 61000-4-2
±8 kV contact
±15 kV air
±8 kV contact
±15 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
±1 kV for input/output
lines ±2 kV for AC
powerlines
±1 kV for input/output
lines ±2 kV for AC
powerlines
Mains power quality should be that of a
typical commercial or industrial environ
-
ment.
Surge
IEC 61000-4-5
±1 kV differential mode
±2 kV
common mode
±1 kV differential mode
±2 kV
common mode
Mains power quality should be that of a
typical commercial or industrial environ
-
ment
Voltage dips, short
interruptions, and
voltage variations on
power supply input
lines
IEC 61000-4-11
0% UT (100% dip in
UT) for 0.5 cycle at 0°,
45°, 90°, 135°, 180°,
225°, 270° and 315°
.0% UT (100% dip in
UT) for 1 cycle at 0°
70% UT (30% dip in
UT) for 25/30 cycles
at 0°
0% UT (100% dip in
UT) for 250/300 cycles
0% UT (100% dip in
UT) for 0.5 cycle at 0°,
45°, 90°, 135°, 180°,
225°, 270° and 315°.
0% UT (100% dip in
UT) for 1 cycle at 0°
70% UT (30% dip in
UT) for 25/30 cycles
at 0°
0% UT (100% dip in
UT) for 250/300 cycles
Mains power quality should be that of a
typical commercial or industrial environ
-
ment
Power frequency
(50/60 Hz) magnetic
field IEC 61000-4-8
30 A/m
30 A/m
Mains power quality should be that of a
typical commercial or industrial environ
-
ment.
