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12.5. Electromagnetic immunity
Surge
GB/T 17626.5
±1 kV differential mode
±2 kVcommon mode
±1 kV differential
mode
Main power quality should be that of a typical commercial or
hospital environment.
Voltage dips,
short
interruptions
and
voltage
variations
on power supply
input lines.
GB/T 17626.11
＜5%U
T
(>95%
dip in U
T
) for 0.5
Cycle
40%U
T
(60%
dip in U
T
) for 5
Cycles
70%U
T
(30%
dip in U
T
) for 25
Cycles
＜5%U
T
(>95%
dip in U
T
) for 5
seconds
＜5%U
T
(>95%
dip in U
T
) for 0.5
Cycle
40%U
T
(60%
dip in U
T
) for 5
Cycles
70%U
T
(30%
dip in U
T
) for 25
Cycles
＜5%U
T
(>95%
dip in U
T
) for 5
seconds
Main power quality should be that of a typical commercial or
hospital environment. If the user of DA-20 requires continued
operation during power main interruptions, it is recommended
that the DA-20 be powered from an UPS or battery supply.
Power
frequency
(50-60 Hz)
magnetic field
GB/T 17626.8
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:U
T
is the A.C. mains voltage prior to applications of the test level.
GUIDANCE AND MANUFACTURER’S DECLARATION- ELECTROMAGNETIC IMMUNITY
DA-20 is designed for use in the electromagnetic environment described in the table below. The user or purchaser must ensure that the
medical device is used in the environment described below.
Immunity test
IEC 60601
test level
Conformity
level
Electromagnetic environment - guidance
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