Leica OH4, Service Manual, Page: 204 / 264

Safety notes
62 Leica M525 OH4 / Ref. 10 714 367 / Version -
Safety notes
Table 202 from EN 60601-1-2:2001
Guidance and manufacturer's declaration – electromagnetic immunity
The Leica M525 OH4 surgical microscope is intended for operation in an environment as specified below.
The customer or the user of the Leica M525 OH4 surgical microscope should make sure that it is used in
such an environment.
Immunity test IEC 60601 test level Compliance level Electromagnetic environment – guidance
Discharge of static ± 6KV ± 6KV
electricity (ESD) according to contact discharge contact discharge
IEC 61000-4-2
± 8KV air ± 8KV air
High-freq. transient ± 2KV for ± 2KV for
electrical interference / power lines power lines
Burst
according to IEC 61000-4-4
± 1KV for input and ± 1KV for input and
output lines output lines
Surges ± 1KV ± 1KV
according to normal mode normal mode
IEC 61000-4-5
± 2KV ± 2KV
common mode common mode
Voltage drops <5% UT (>95% <5% UT (>95%
short interruptions dip in UT) dip in UT)
and voltage variations for 11 /
22
cycle for 11 /
22
cycle
IEC 61000-4-11
40% UT (60% 40% UT (60%
dip in UT) dip in UT)
for 5 cycles for 5 cycles
70% UT (30% 70% UT (30%
dip in UT) dip in UT)
for 25 cycles for 25 cycles
<5% UT (>95% <5% UT (>95%
dip in UT) dip in UT)
for 5 sec. for 5 sec.
Magnetic fields at 3 A/m not applicable
mains frequency
(50/60Hz) according to
IEC 61000-4-8
Note: U
T
is the a.c. mains voltage prior to application of the test level.
Floors should be of wood, concrete or
ceramic tile. If the floor is of synthetic mate-
rial, the relative humidity must be at least
30%.
Mains power quality should be that of a
typical commercial or hospital environment.
Mains power quality should be that of a
typical commercial or hospital environment.
Mains power quality should be that of a
typical commercial or hospital environment.
If the user of the Leica M525 OH4 surgical
microscope requires that the instrument
remain functional even after mains power
interruptions, it is recommended that the
Leica M525 OH4 surgical microscope be
provided with an auxiliary power source
such as an uninterruptible power supply
(UPS) or battery back-up.