Hioki 3155-01, Instruction Manual

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5.7 Patient Leakage Current Measurement Mode
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NOTE
5.7.2 Connecting Equipment for Patient Leakage Current
Measurement
CAUTION
・ The maximum current that can be input into the leakage current
measurement terminals of the 3155 is 25 mA (AC+DC). The input of any
larger current will cause the beeper to sound (when the beeper is turned on),
after which continued input may cause the fuse in the measurement network
to fail. In this case, input must be terminated immediately.
Afterwards, a fuse check is performed automatically upon returning to the
initial screen from the leakage current measurement mode. Therefore, do
not connect anything to leakage current measurement terminal T1. (If
anything is connected, the display may show "Measurement Network Fuse
blown.")
・ The rated capacity of the auxiliary power socket is 1500 VA or less. If this
capacity is exceeded, the auxiliary power outlet circuit breaker will actuate,
and the power supply to the equipment to be measured will be cut off.
(With the 3155-01, the main power switch is turned off.)
・ When power of the equipment to be measured exceeds 1500VA, make the
connection directly to the outlet; do not use the auxiliary power socket.
(When measuring class
equipment, connect the protective earth conductor
of the equipment to be measured to the G terminal of the 3155.)
In this case, the power source polarity and the condition of the equipment to
be measured cannot be set on the 3155.
・ If the voltage application button to the 9196 APPLY UNIT is ON, the danger
of electrical shock is present. Turn the voltage application button OFF when
not making measurements.
・
Use an insulating transformer.
Note 1: 110% voltage application to internally powered equipment can be
either normal or reverse polarity
Note 2: For internally powered equipment, for 250 V applications under IEC
60601-1 (1988-12) + am1 (1991-11) + am2 (1995-03) standards, 110%
voltage of the 3155’s power source voltage is applied via the 9196
APPLY UNIT.
・ Measurements shown in the shaded portions of the tables (110% voltage
application) require the optional 9196 APPLY UNIT or other power sources.
・ Do not apply 110% voltage if there is any chance that circuitry or other
physical components of the instrument might be damaged.
The measurement current is set to "AC+DC rms."
For the concept of leakage current in medical electrical equipment and its
wiring when using the 3155, refer to Appendix 2.1, "IEC 60601-1 (1988-12) +
am1 (1991-11) + am2 (1995-03)."