H) Current Measuring "A - VOLTCRAFT VC930 Operating Instructions Manual

h) Current Measuring "A"

Do not exceed the maximum permitted input values. Do not touch any circuits or parts of circuits if
they may be subject to voltages higher than 25 V ACrms or 35 V DC! Danger to life!
The maximum permissible voltage in the current measuring circuit may not exceed 1,000 V in CAT III.
Measurements >5 A must only be performed for max. 10 seconds and at 10 minute intervals.
Always start current measurements at the highest measurement range and switch down to lower ranges if
necessary. Before changing the measurement range, always power down the circuit. All current measuring
ranges are secured with fuses and thus protected against overload.
Proceed as follows to measure direct currents (A
alternate currents (A
- Switch on the DMM and select measuring range "A".
- The table shows the different measuring functions and
possible measuring ranges. Select your measuring range and
the respective measuring jacks.
Measuring Measuring
function range
mA
0.001 mA - 400 mA
10A
0.001 A - 10 A
- Insert the red measuring line into the mAµA or 10A measuring
jack. Plug the black measuring line into the COM jack.
- Connect the two measuring prods in series with the object to
be measured (battery, circuit, etc.); the display indicates the
polarity of the measured value together with the currently
measured value.
When a minus "-" appears in front of the measured value when measuring direct current, the current has the
opposite direction (or the measuring lines have been swapped).
- Remove the measuring lines from the object to be measured after completion of the measurement and switch off
the DMM.
Never measure any currents above 10 A in the 10 A range or currents above 400 mA in the mA range;
otherwise the fuses trigger.
):
Measuring
jacks
COM + mA
COM + 10A
) and
45