Measuring Current - VOLTCRAFT VC-533 Bedienungsanleitung

b) Measuring current
Never exceed the maximum permitted input values. Never touch circuits or parts of circuits when
they may contain voltages greater than 33 V/ACrms or 70 V/DC! Fatal hazard!
Do not measure current on a circuit with a voltage of more than 600 V in CAT III.
Pay attention to the necessary safety information, regulations and protective measures for your
own safety.
The current is measured via the current clamp (B). The sensors in the current clamp detect the magnetic field created
by current-carrying conductors. You can take measurements on insulated and uninsulated conductors. Ensure that
the conductor always passes through the centre of the current clamp (pay attention to the arrow marks) and that the
clamp is always closed.
A cable separator (A) is located on the tip of the pliers, which allows you to separate tangled cables. This makes it
easier to separate the desired cable.
Do not use the current clamp to surround more than one conductor. If the supply and return conductors
(e.g. L and N) are measured, the currents will cancel each other out and no measurement will be displayed.
If several supply conductors (e.g. L1 and L2) are measured, the currents will be added together.
At low currents, the conductor can be wound around one side of the current
clamp to increase the total measured current. Divide the measured current
by the number of coils. You will then receive the correct current value.
Follow the steps below to measure AC currents (A
• Switch on the DMM using the rotary dial (F) and select the "A
ment mode and the predicted measurement range (600 A / 1000 A). "A" and
the AC symbol AC will appear on the display.
• The display is automatically set to zero when the current clamp is closed.
If there is a strong magnetic field that affects the reading, use the relative
value function ("REL").
• Press the opening lever (E) to open the current clamp.
• Surround the conductor that you want to measure and close the current
clamp. Position the conductor in the middle between the two triangular posi-
tion symbols on the clamp.
• The measured current is indicated on the display.
• After taking a measurement, remove the current clamp from the measured
object and switch off the DMM. Turn the rotary switch to the "OFF" position.
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