Well Health WH-CP Manual Del Propietário página 134

Voltage dips, short
interruptions and
voltage variations
on power supply
input lines
IEC 61000-4-11
Power frequency
(50Hz/60Hz)
magnetic field
IEC 61000-4-8
NOTE
U is the a.c. mains voltage prior to application of the test level.
T
<5% U <5% U
T
(>95% dip (>95% dip
in U ) in U
T
for 0.5 cycle for 0.5 cycle
40% U 40% U
T
(60% dip (60% dip
in U ) in U
T
for 5 cycles for 5 cycles
70% U 70% U
T
(30% dip (30% dip
in U ) in U
T
for 25 cycles for 25 cycles
<5% U <5% U
T
(>95% dip (>95% dip
in U ) for 5 s in U
T
3A/m 3A/m
Mains power quality
T
should be that of a typical
commercial or hospital
)
T
environment. If the user
of the Transcutaneous
Electrical Nerve Stimulator
T
requires continued
operation during power
)
T
mains interruptions, it is
recommended that the
Transcutaneous Electrical
T
Nerve Stimulator be
powered from an
)
T
uninterruptible power
supply.
T
) for 5 s
T
Power frequency magnetic
fields should be at levels
characteristic of a typical
location in a typical
commercial or hospital
environment.