Contactless Clamp Current Measurement " A - VOLTCRAFT VC292 Operating Instructions Manual

12.8 Contactless clamp current measurement "
Never exceed the maximum permitted input values. Do not touch any
circuits or circuit components if the circuit has voltages higher than AC 30
Vr.m.s, 42.4 V peak or DC 60 V. Danger of death!
The voltage in the measured circuit must not exceed 600 V.
Pay attention to the necessary safety information, regulations and protec-
tive measures for your own safety.
The "clamp current measurement" measurement range is a high-imped-
ance range and can only be used with the "CLA60" clamp transformer.
Direct measurement is not permissible.
Through a clamp transformer (current clamp), the DMM enables the measure-
ment of direct and alternating currents up to 60 A. Measurement is carried out
contactlessly using a fold-out clamp current sensor. For clamp measurement,
the current circuit does not need to be disconnected.
The sensors in the current clamp detect the magnetic field created by current-
carrying conductors. You can take measurements on insulated and uninsulated
conductors. Always ensure that the conductor passes through the centre of the
current clamp (pay attention to the arrow marks) and that the clamp is closed.
The clamp transformer can be used for direct and alternating current measure-
ments. 10 mV per measured ampere is output at the output.
The measurement is indicated on the display in amperes. Conversion as with
conventional adapters is not required.
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 cur-
rents 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.
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