HIOKI 3030-10 PDF


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Observe the following precautions to avoid electric shock. Always verify the appropriate setting of the range selector switch before connecting the test leads. Disconnect the test leads from the measurement object before switching the range selector switch. Before taking a measurement, check the position of the range switch. Do not measure voltage outside the set voltage range or voltage at levels in excess of the measurement limit.

Doing so may damage the instrument or cause an accident resulting in injury or death. Do not input voltage to the current measurement, resistance measurement, and battery test ranges. NOTE: The built-in fuse prevents a short-circuit in a power line resulting from a malfunction or misuse of the instrument. However, this built-in fuse protection is effective for up to VAC commercial power input. If the end of a test lead short-circuits lines with a voltage between them, this is very dangerous and can lead to a serious accident.

Exercise great care when measuring voltage. If the protective functions of the instrument are damaged, either remove the instrument from service or post warnings to prevent others from using the instrument inadvertently. Note that the instrument may be damaged if voltage or current in excess of the measurement range is input. Do not store or use the instrument where it will be exposed to direct sunlight, high temperatures, high humidity, or condensation. If exposed to such conditions, the instrument may be damaged, the insulation may deteriorate, and the instrument may no longer satisfy its specifications.

After use, always turn OFF the power. NOTE If the meter pointer is not positioned in the 0 scale value, use the zero adjuster to adjust it correctly. If the fuse is blown, or the test leads are damaged, any range does not operate. To check the test leads wiring and fuse blowing, refer to 3. If the meter cover becomes electrostatically charged, values may display incorrectly because of attractive forces on the needle.

In this case, apply anti-static treatment to inhibit electrostatic charge buildup. The efficacy of such electrostatic treatments dissipates over time, so the treatment may need to be reapplied periodically. Measurement Procedure To avoid the possibility of electric shock or incorrect measurement, check the following items before using the instrument.

Before using the instrument, make sure that the insulation on the test leads is undamaged and that the white or red portion insulation layer inside the cable is not exposed. Using the instrument in such conditions could cause an electric shock, so contact your dealer or Hioki representative for replacements.

For voltage measurement, short the test leads and check that 0 V is indicated. Measure a test item with a known value battery, AC supply, resistor, etc. Attempting to measure voltage in excess of the maximum input could destroy the instrument and result in personal injury or death.

To prevent a short circuit accident, be sure to use the test leads with the sleeves attached when performing measurements in the CAT III measurement category.

Remove the sleeves from the test leads when performing measurements in the CAT II measurement category. For details on measurement categories, see Measurement categories i n the instruction manual. When performing measurements with the sleeves attached, be careful to avoid damaging the sleeves.

If the sleeves are inadvertently removed during measurement, be especially careful in handling the test leads to avoid electric shock. When the DCV is selected, if connecting the red test lead to the positive side, and the black one to the negative side, then the pointer deflects normally.

NOTE : When changing the range, disconnect the test leads from the object to be measured. The voltage measurement of the outlet Function.


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