EGAmaster EGAtronik 51255 Manual De Instrucciones página 23

Warning!
Never attempt an in-circuit current measurement where the voltage between terminals and
ground is greater than 60V DC or 30V rms. If the fuse burns out during measurement, the Meter
may be damaged or the operator himself may be hurt. Disconnect power supply before making
measurement. Use proper terminals, function, and range for the measurement. When the testing
leads are connected to the current terminals, do not parallel them across any circuit.
To measure current, do the following:
1. Turn off power to the circuit. Discharge all highvoltage capacitors.
2. Insert the red test lead into the mA or 20A or 10A terminal and the black test lead into the
COM terminal. When measuring current at 200mA below, insert the red test lead into mA terminal
while measuring current 200mA or above, insert the red test lead into 10A or 20A terminal.
3. Set the rotary switch to an appropriate measurement position in A
4. Break the current path to be tested. Connect the red test lead to the more positive side of the
break and the black test lead to the more negative side of the break.
5. Turn on power to the circuit.
The measured value shows on the display.
Note
- If the value of current to be measured is unknown, use the maximum measurement position
(20A) and 20A terminal or (10A) and 10 A terminal, and reduce the range step by step until a
satisfactory reading is obtained.
- Replace appropriate rating fuse when the fuse is burnt. Fuse specification: 0.315A. 250V fast
type fuse, Ø5 x 20mm.
- When current measurement has been completed, disconnect the connection between the
testing leads and the circuit under test.
D. AC CURRENT MEASUREMENT (SEE FIGURE 4 WITH DOTTED LINE)
Warning!
Never attempt an in-circuit current measurement where the voltage between terminals and
ground is greater than 60V DC or 30V rms. If the fuse burns out during measurement, the Meter
may be damaged or the operator himself may be hurt. Disconnect power supply before making
C. DC CURRENT MEASUREMENT (SEE FIGURE 4)
range.
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