Topview Kestrel 3100m - Electromagnetic Immunity Guidance

- 45 -
intervene adjacent electromagnetic equipment.
RF emission
GB 4824
Class A
Fundus Camera Kestrel 3100m is intended for
use in all facilities/hospital-specific low-voltage
power grids that are not directly connected to
the public and residential public low-voltage
networks.
Harmonic emission
GB 17625.1
Not applicable
Voltage fluctuation/flicker
emission
GB 17625.2
Not applicable
2) Electromagnetic immunity
Immunity test
IEC 60601 test level
Conforming level
Electromagnetic
environment - guidance
Electrostatic
discharge
(ESD)
GB/T 17626.2
±6kV contact discharge
±8kV air discharge
±6kV contact discharge
±8kV air discharge
The ground shall be paved
with wood, concrete or tiles.
In case of composite
materials used to pave the
ground, its relative moisture
shall be no lower than 30%.
Electrical fast
transient
(EFT)/burst
pluses
GB/T 17626.4
±2kV supply line
±2kV supply line
The network power supply
shall be of typical quality
applicable to commercial or
hospital environment.
Surge (impact)
GB/T 17626.5
±1kV line to ground
±2kV line to ground
±1kV line to ground
±2kV line to ground
The network power supply
shall be of typical quality
applicable to commercial or
hospital environment.
Voltage dips,
short
interruption and
voltage
variations
GB/T 17626.11
＜5%U
T
, lasting for 0.5
cycle
(Above U
T
, ＞ 95%
dip)
40% U
T
, lasting for 5
cycles
(Above U
T
, 60% dip)
70% U
T
, lasting for 25
cycles
(Above U
T
, 30% dip)
<5%U
T
, lasting for 5s
(Above U
T
, ＞ 95%
dip)
＜5%U
T
, lasting for 0.5
cycle
(Above U
T
, ＞ 95%
dip)
40% U
T
, lasting for 5
cycles
(Above U
T
, 60% dip)
70% U
T
, lasting for 25
cycles
(Above U
T
, 30% dip)
<5%U
T
, lasting for 5s
(Above U
T
, ＞ 95%
dip)
The network power supply
shall be of typical quality
applicable to commercial or
hospital environment. If the
user wants to run RetiCam
3100 during the power
outrage period, it's
recommended to adopt
uninterruptible power supply
(UPS) for powering on
Kestrel 3100m.
Power
frequency
magnetic field
(50Hz)
magnetic field
GB/T 17626.8
3 A/m
3 A/m
Power frequency magnetic
fields shall be featured with
the power frequency
magnetic field level
characteristics for typical
places in typical commercial
or hospital environment.